Aircraft noise source and computer programs - User's guide

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l I The executive r eu- t 4n e su b se qu e n tly ca 'l ls th e flight p at h / o bserver geo m e tr y a nd e xtra pol ati on co rr ec ti ons o ve r lay. Th e flig h t pat h / _b s erv e r g eo metry r o u ti n e c alc u l a t e s t h e po s iti o n o f the air c raftwit h r e s p oc_to the i n itial in pu t c on diti ons , t he di s ta n c e o f , o u nd p rol : a_ati o, , arid the time o f so u nd tra nsm i ssion f o r e a c h si de ll n e o bs e r ve r po siti o nf o r a set o f 1 7 an gles (I0 e, 2 0 a, .... , 17 0 ° ) b e twe en the flight p athand a line t o th eo b s erver.

T he e xtra pol atl o n co rr ec ti ons r o utln(_ i s ca lle d b y tl_ e e xe c utiv e pr og ram t o ca l cu l at e t he sound att en uati o n du e t o sph e rical d iv e r ge n ce , a tmos ph e ri c ab so r p ti on , e xtra - g r ound a tt enua ti on a nd g r ound r e flecti o n, b a sed a n the d i s ta nceo f p r op a g ation b e tw ee nth e no i sesou r ce an d th e o bs e r v er . T h ' Is inf o rmati o n i s s t o r ed in an arrayba s ed a n the number o f spe ctrabands (8 o r 2 4 ) , th e 1 7 pos iti ons o f t he a i r c raft, a nd th e nu mb e r o f o b se rv e r pos iti ons.T h e arr a yi s used t h ro u gh o ut t he ca s e f or ex tra po lating th e in de x spe ctra o f e a ch no i s e co m pone nt a nd f o r extra p olation of the total i i nde x spec tra.

F r o m t h i spo i n t,untilth e ne xt ca se ,all in pu t spe rtainto in d ividual no i seco m ponen t da t a . Th i s is s u b d i v i d ed int o c on t ig u ratlon d ata s ets c o m p ri sed o f a tit le c ar d f o l lo w ed by d i s cr e t e n o is e co m ponen t d ata s et s , t h e su m o f whi ch des crib e that p arti cu lar sou rc e c o n fi gu rati o n (eng i ne) .

Ea c h case i s all o w ed a ma x i mum o f 3 d iff e r ent sou r ce con fi gu rati o ns w h i ch must be m_ tn _in ed bo t h i n o r d er a nd n u m b er _ h r ou gh ou t t he J o b (a ssu mi n g m o r e than o ne case is t o be i npu t ) . A ft e r e ac h c o m po n en t d ata se t i s pr o c esse d by th e pr o gram,th e e x e cutiv e m o dulelink s th e appr o pri a t e ;v e r l ay for the typ e of no l se pre d icti on sp e c ifie d by the i n pu t da t a.

Ea ch n o i se m od u le w a s des i gned t o f ollo w a pp r o xim a t e ly t he s a b l e pr o- g ra mmt n g st bps. Fi r st t he sphe ri c a l c oo r d i n at e a ngles r el ativ e t o t h e n o i se = ou rc e r e f e _ nce axi s ar e ca l culat ed if t he r ela t e dref e r ence axi s h a s c ha n ge d fr o m th e pr e vi o u s n o i s e_ o m p on e nt. N e xt,th e fr e e-fie l d in d ex (I / 3 or I / I ) oct a ve b and s p e ctr a ar e ca lcula t ed f o r e a ch si del tn e pos t 'L l on f o r _ , e ac h o f t he 1 7 a ngul ar pos i t i ons be tw e en =ircraft a nd obse r ve r , L tn in g , m ul ti pie engine , f l i ght, a nd con f tgur at lolt co rr e cti on e ff e ct s a re i nco r po r a t ed in t o t he ca lc u l a t i on s, if a ppl icab l e. The inde x spe ctra, fo r e a c h n o i se co m ponent , is a va i lable a s pa rt o f the op ti on a l rep ort s . The t o ta l fr ee - fi e l d i ndex no i se ra d i a ti ng t o war ds t he obser v e r pos i t i o n s f o r eac h o f t he 17 a ir- c raf t posit i ons i s a c cu m ul a ted i n a n arra y by lo garit h mic summ i ng . T h ese spec tra are also av a i lab le as p art o f th e o pti on a l r epo rts.

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I J , • T _e e xl;r a p o l _ 1:ton c _r r _ ¢tto ns d es c rtb_ l tn I _ ma_ n _ por.¢, se c t ton 5.1.3, ar_s ub _ra Cted fr_ the not s e component f r ee - _ eld tnd e x s i de c ar .

Then uma_ r e sp ons e m ea su re s ,t. e ., p er ce i vednet se _ ov e l (PNL), to ne e e r_ ec t ed PNL(TCPNL) _ andeffe ct fv e PNL(EPNL) J P e c a l cu l a te ¢ a s t h e ff _ ul step tn e _ chnot s e co , p o i n t mod u le. T: _ ext ra polzt e d n _ tse _ t n c o n j uncti on wt th th e r esponse m easures, a re a va | l ab le a s p ar .t of _ h e ou _ pu _ r e po rt .

Af t e r a : 1 n ots e c o,q)on ont data sets de sc r t l _tn 9 _ he atr _ra_t n o _ se fo r t he c a se havebee,. p recessed, th e _ f r ee-t _ te | d tnd _ xspec _a a re ex tr apol a ted tn the same _ w _ ne r a s t h e t nd fvtdu a . 1¢ _m p on er¢t3. In ad dftt _ n the hu man resp o n s e mee s u _ o es wt1 _ be c a lc u l at ed basedon _he to t_ l " extr a p O lat:ed sl _ c _ ra . Bothth e to ter fre e -field t . _ dexspectra a nd t he to te1 ex tr ap o late d spe ct ra a re av a tt _ blo _s p ar t . of t hs_out # u tr epo rts .

T he s o u c _ e n o t_ e pr _ t ct to n p e ogrw,h a s bee nd es tg n ed _ o pr _ c e _ s .dt s c r e t _e a t _ c r af t -e _ se r ve r po s_t to _ a nd a .Jrc ra_t p r o pul sJ en sys _ oper at - Ing c o nd t-t:io ns , _ rathe r tha n_ a-co _ pl e t e op e ra t ion, e .g., t_ keo f f.or a pp r o a ch.

. , Thts m ethocL # rovld e s g reate r flextbtltJ _ y and e _ se t n u s tn9 t h e p_ og r a m .

The proo f . am wtll c on t tn a t:op _ e ss tnpu t d a f _ on a pep c as e I _ a s tsun i t1 a n endof file (no mo _ e d a _ c a_ e s ) _ s ehco _ lte r e _ . Ea c h c ase nomal Z y w o u ld re presen t a cLtffe4 _ _ t o f a_r c ra f(: condt t ton _ such a s a i r | ru d e , :' , _ speed,e n g i ne o p e r at ing c on dtttons, e t c, P _ e s um a bly m ost ot' t he tnpu t dat a wtl l r ent a_ constantbetw _ er _ cases (e.g., stde _|n e observerdt s ta41e e_ , doppler o p t_ o n_a_s ph e_ t c ¢_ ndt t tons __t put: opt i ons, e _ c.}. T h t S wtll al low n otse studl _ zs fo r' t _ keo t f a nd la ndin g of a ttract wt _ . h a m t,t m al a m ount of tnp u t.

T h e not r e c o _ tou _ e st tnl a ttOnp r ogr am ts de s tgned t o us e th e results of t he s ou f _ nots e p _ ' e dt ct tonp _o g r e _ , or m eas u red n t)ts e data, A post- , proce ss o r p ro gr am( R e f.2) h a sb ee_ ln(:ludedwt t h th e n o ise sourcees t t m a4:4ofl p _ - gram t o convert t he a c o us t t c d a t _ (f t | _ : TAPI_ZO) tn to is d a t a s u br o u t ine s a tis f y i n g the r equir e ment s of t he contou r p r og r a m . Re s u l t s of _ t h e contou r p _ og r a _ar e e ra ; t o u r sof equal no tse l e vels, the area wt t htn the coflt _ r S_ a ndnoi s e level es ti ma te s on up-to-three s id e line s .

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J; 3,0 _OUR C ENOISEPREDICTION PROGRAM In ordertQ fa c i ll tatQ thn u_e o f th l _ , program,manyof thn da t a I r _put_ havepr o -@t o red defau l tvaluQ_in the pro g ramand ar e d e flne d in the appropr l- ate p aram et er doacr lp t lo n _ect lo n, An oxam l na tl on of t h e f o l l ow l ng _e e t lo n_ wl l ] i ndic ate th e ne c e ssary i npu td e t e l ne e de d f o r th e var lou s o p t l o nBb ul lt int ot he p rogram;o,g,,u_tab l lshlng d iffer e n t a t mospheric Qondltl o ns; u s in g c a lc u l at ed g r o un d ref l ectlon co rr e ctl o n_ o r a 3 d B defa ul tva lue ;uslng n masu_ e d d a t a to de f l n(_ a n ol s_ con f i gura t ion ins te a do f that o btaln o dby a pre di ct i on m etho d. T a bl e 1 presentsa c r oss refer e n c e o f eng i neer i ng an d pr o gramm l no d ocum e n t _ b y n o f_ V P e an d s e c tio nnumber, The p r og ram w i ll p r o c e @s o n e o r m o r e c a ses o f d ata i n a si n g l e ru n . A c a se co n s is ts of f ro m one to thr ee d ifferent t y pe s o f p ropu l sio n syst e ms. T he n o i s e f ro m e ach pr o pu l si o n s ys t en is d es c ri b e d in te_m s o f a s ub s e t of n o is e com po n e nts. T he ord e ro f I nputfor e a c h c ase r e mainsfi xed ;h o w ev er i nput s whi ch remainc o ns t antthr o ug ho ut the run, ne edno t be r ede fine d for succee di ng c a s e s.

The fir sti nputper ca se c o n sistso f a n 80 co lum n al ph anum e ric title r e c o r d wh l chw ill b e o u t puta s p art o f t he head in gdesc ri bi ng t h e ca se . If th e s ame head i n gI s d esl re d thr o ugh o ut the run onl y b l ankr eco r dsne e d b e en te r ed in s u cc eedi n g ca ses . Th e t i t le r eco r d i s f o l lo w ed by o n e o r m o r e r eco r ds desc r ib i ng t he gene ra l c o n d iti ons w h i ch a pp ly t h r oughout th e case.

Th es ecar ds are cod ed i n a F OR T RA N NAME L IS T f o rmat, The NAME L I ST f o rmat r equ ir es thatt h e f i r s tr eco r ds tartin c ol umn 2 with a n initia to r nam e & G DA T A o n Ge nera l Data Param e t e r s . T he o rd e r o f th e paramet e r s I s indepen d ent but m us t h a ve th e variab l ename,f o ll ow edb y an e q u al s mark, fol lo w ed by the a ssig n edv a lue . The param ete r s m us t b e s ep ara t e d by C O BTmS - b l a nk sar e i_ igno r ed . Any su c ce e d i ng r e co r ds mu st s t ar t t n o r af te r col um n 2 a nd may go th r o u gh co l umn 80. A t ermi n at o r & EN D m ust f ollo w th e last p aram etP r in e a c h d ata se t.

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: A va r l a bl Q- n a m e c a n be f ollo we db y a slngl e v a lue,o r a se ri eso f valu e s i n t he ca s e o f v ar l ab l e s w h ic h r equl r e an array o f d at a . T h e ge n e ra li n pu t f o r m a t is as fo llo w_: Var i abl e s ha v i ng s t n iLl e v a lues _ xa m p l e :-_ I nt ege r t y p e d e c tma l ty pe N ENG=3 S L g P E=. 25 G _ TA (gen e s 1 co m puter P rogra m da _ )-. 5,1, 2 3.1 LININGOpttons 5.1.4 3. 2 .1 : C C IN F J:G, CORR. OOttons 5.1.5 3.2.1 Notes 1. N T YPE a Opearst h f t rs t N _ IZSI N re G oPd and, s pe c ifies the _ n u m b O r ot' NI_ ISIN rece e dsIn the case.

2. E a Oh I _ [SIN e ec o P d sp Q_ : _ tesa n IT Y I _ m od u lee n dsll a _ f _ en _ s I n tl _ ereco r d are for t:h a t m_ dule(11nt n (I .

a _c lconf i g u r e d :ton opt:tons a _ e I n cl u ded tn t t _ e r_ cord a s r e qutPed).

TABLE i ENI 3 INEERZNG / PR O GRAI _ ZNI _ D O CUMENT CR O SS REFERENCE • 9 Ex O , .I pl o: F i ll t n o th e co m plo tQarra y fo r a 1 0 o l q m o nt

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arr a y S L_IST(1 ).o r _ L DI ST .IOO., 2 0 0 .,I B O,,I P _., 5 00..T S O . ,IO00.,I_O0 ., I_O0,,200,9,, 1 F illi n g pa r t o f t h e afar .( _ L _ I SI'( 3 ) o JO ( J., # OO, , E j. _ a m p ]e o f N A _ EL I ST GDATA', &GDATA ALT C G=lOO ,, ALTPG=200 ., SL C PE= , l ,AM A C H= .1 5 ,k / . , S _ 2 , SL UIS T( 1 ) =IO O ., BOO .,IS PT RM = I,N TE N G = 2 &E ND S eve ra l sam p l ec a ses w i t h i n p u tdata an_ , , . , , ep o_ _. , , . _ pr e _ e nt_,d in the _ample C asessec t ion.

Fo _ 1o wln g th e GD A T A d atas e t is a n 8 0 co !umnal ph anum e rlc tltl e rec o rd d es c ri b in g the fir s tn ois e s o urc ec o n fi gu ration.S ep ara t e d ato setsu s lng t he NAME L IST i nit iato r &N I _I S IN desc ri be e ac h n o i se c o m pone nt I na c o nfi g ura t i o n , I f mor e t han o n e c o nfigurat io n i s t o b e inclu d ed, the procee d in g typuof input i s In cl u ded f o r e a c ha dd iti o na l co nfi gu ra t i o n s tarting wit h the tit le r e c o r d a nd t e rmi n ati ng with th e &E N D N A ME L I STte rm i na to r f o r the l astn ol s eco m po n ent I n t h e&N( _ I SIN d a t a se t. A s m en ti onedp r ev l ou sly, t h e r eI s a m a x im u m o f 3 di ffer e nt t _ peso f p o wer pl an ts p e r run; t he r ef o re a c as emay b e pro c e ss e d h a v ingdl ff e re n t e ng i necon fi gu rati on s usi ng a n y o r a 1 1 o f t h e 1 2 d iff e rent no i semodulesdepe n d i ng on t he nat u r e o f th e parti cu lar con f i g u ration. E a c h no i se compo n e n td ata se t t s desc r ibed i n t he f o ll o win g sec ti o n s . A t e rminat o r t s no t r eq u i r e d t o end t he r u n s i n c e a n e n d o f ft le ch e c k ts r e p eat edl y ma de on t he i np ut dat a ft le a t t he e n d o f e a ch cas e .

_ W h e nu s t ,9 t he p r o gr a m f o r m ult tp l e no i se so ur ce con fig ura ti ons , a ll in pu t v a lue f o r N TENG = 2 , o r 3 is requt_d t . the & GD A T A se t. W h e nm o re t ha n o n e t y pe o f no ise compone n tis used i n a con fi g ur a t io n, an i nput N T Y P E=m ( wh e r e m i s t he tot al n o ise c ompon e n t s f o r t he con ft gu ratt o ll) i s n eeded tn t he fi rs t & N ( _I S IN da ta se t f o r t h at co nfigura t i o n .T he sec t io nc o v e rin g t h e s ampleca ses secti on sho u ld assist i n c larif y ing th e tnp ut d ata.

I0 Lil I i nil f irfl " "-" d " T ...... I o_ The prog ram a t lo w s t he use r t o spec ify one of t _ o un. tt s y s t e m s f o r t n put / _ utput _ va r tab_ e¢ _ T h( _unit syst em cons i dered a r e th e.H K S and E _ g l ts _ s: t ste m . Th e _ s er mus t b e co nsi s t e nt wi t h t he c,o _c e ma x l e for t he unt t s y s t em _) cause once he has spec i fJed his c h oice, t he program co ns id e r s al l i npu t s a re_I nth_ sysle_, T h e I n _ l: variab le IU H I T-spe cifi e s theunit s y s te m _slr e d, t h e d e fa u lt o pti o ncorre s _ s to th e MK S units.

l G e n e ralDa t a Par_n e t e r s (&G DATA i n pu tdata se t ) This se c t io n desc ri bes ti l o se i n p u ts w h tc h mus..__ _ t be d e fi ned by t he use r fo r t he f irst case o f a co mpute r r u n . Suc c eed i ng ca ses ne ed o nly t h e app, - p rfate v al ues cha n gedref l ec t ing a c hange in t he pr ed ict io n c o n d ttf o n s _ : Unl es s o t he _t S e I ndi cat ed, e a c h variabl e is to b e d e fined By input O r by th e d _ aul t valu e (s). _ n o _ e r t o f a sc ll l tat e f i nd i ng t he des cri p ti o n of a par_ e te_ t h e li s t( s )of i np ut sw lthln e achof th e follo wi ngs ectio ns hav e )_ b ee n alphab e tlz_ d wtth _ es p e ct t o th e n_ .s _ f th e v a riable s .

) - / V arl able Un l ts Defaul t , O_crlpll o n _ Na m e _) . M L T m , ( ft .) O. AIr p _t a l tltu_ .

" T : _ E T P G m.{ft.) O. Aircraft heig htabov eg _und a t Y=O. ( F ig . 6 of R_.I) ALT @ G m.( f t.) O . O bser v er I _ e i gh t abo v e t heJjPo und.

_CH A t_r a _ M a c h_ u mb e r .

_ G PI _I B I0 . N u m be r of d ec ib e l sdo w n fr o m m_Im u m , used to de te mt _e the i nt egr a t i on tn t e r v a l f o l : ti l e EP N L ca l c u lat ionS.

: CPRES AC t n(ps t a) Pre ssut'e of" ho m ogeneous _ t _ osphe r e d eftn_ = b y u s e_ . ( N o te: U se d o nly t f I ATf _ S 4).

C R H UriD _ RH Relattve h um i d i t y of h o m ogenous a t m osph e re de f ined by user. (Note: U S edo n ly t f IA TI _ -4) .

C TEI _ °K(°R ) Tem p e ra tuPeo f homogeneo u s a t m os p he r e de- fi n ed b y_u se r . ( N o t e: US edo nly if : , IAT M_ S4) , _ DHUNID _ R H O. Const an t ¢ r e ia t tve h bmt dtt y delt _ th a t= i s a dded to ISA.(No t e: Used o n l y t f I ATH g S 1 ).

DPRES Atm( p sta) O. Co n s t ant p Pes s ure de l t a th a t I s adde d t o ISA. (No t e: Used only tf IATI _ S-1).

D TE M P °K( ° R ) O. Constant tem p e ra ture del t a t ha t ts a d de d t o ISA. ( N o t e: Usedonly tf I ATH( _ S - 1).

!i | I J IIII I Il l I I Va r ta ble Un it s De fa ult: Desc r ip t ion N a me EPP Eng i ne pe rf o rm ance p a r a me t e r used t o co r r elat e d ata outp ut f or t he No i se Cg nt o u r P r ogra m or t o spec i f y ope r a ting condi t ion _ ; l e n using t he "m e a sured d a ta" m od ul e.

FL D ( 1 ) H Z D ata f requenc i e s f o r t he ground im ped a nce d ata cu r ve us _ tn t he gro u nd re f lec t fon "'" c a lc u l at ion. The nu m bero f v a lues to be FLD ( 25) Pt _ speci f ied ts NO. (Note: Usedo n l y i f IG O R = O.)

FL R p N d B 90 . N oise fl oo rf o r E PNL ca l c ul ati o n s .

V a l u es less th a n FL Rar e no t i n c luded _ hen co m pu t ing the du r a t ion f o r E PNL.

IAI R 0 Spec ifi es w h e t h e rt he air a bso rpti o n c oe ff i ci e nt s ar e ca l c ul ated by t he p r o gram o r d efinedby the u s er. S et e qu al t o: 0 i f p r og r a m Qa lcu la tes 1 if use r de fin es (see U AI R AB) - 1 if p r og r a mr e tai nscoe ffici ents fr o m previ o u s ca s e } co nditi o ns u sed by pr og r a m. Se t il IA TI _S 0 Spe cifi es th e typ eo f a tm os p her ic eq ua l t o: 0 f o r n onh om ogene o us I nt ernati on al s ta nd ar d a t m osphe re(I SA) .

I f o r n o nh o m o g en e ous ISA p l u s u s er de f ined const an ts f o r r e l a ti ve h umi d i t y , p r essure, a nd t e m pe r a- tu r e added t o IS A. ( No t e: See D H U MID, DP RES ,DTE M P) .

2 f o r nonho m og e neous atmosphe ri c cond iti o n s tha t ar e de fi ned by the u se r. (Note: See NTE M P , TALT , TE M P , NP R E S, P A LT , P R E S,N HU MI D ,RA LT , RHU MI D) .

3 ho m ogeneous a tmo s phe r e o f 1 AT M = _ ' 1 4. 6 9 6 ps l a ; 2 88 . 1 6 °K (1 5°C) = 518 , 688°R(59°F); 7 0%R .H .

4 ho m ogeneo u s a t m o s phe r e de fin ed b y use r. ( N o t e: S ee CPRE S ,C R H UM D, CTE M P) .

I D _ P 0 Dopp l e r sh i ft s wit c h 0 f o r no dopple r s hi ft f a c to r 1 dopple r sh if t fac tor t n c luded ( N ote: Fo r f a n no i se the co rr ect i on ts f o r fr equenc y onl y ) 2 dop p le r sh if t fa cto r tncluded ( N ote: Fo r fa n no i se a co rr ec t ion i s ma de f o p bo t h t he f re q uenc y a nd th e no i se l e ve l s).

: 12 I I V a r ta 4 _ e Uni ts O e f a ul t Descrip t ion Na _ e [EC _ 0 S H c t fte s _ et _ r corre cti ons f or ex t r¢- g r ou,d-at _ e _ u att en a r _ t o be a p p l t ed wtdl( _ ex tra_ ; a t . _ ng t h e nor s e level fro m t he a trpl a ne t o t h e o b s e Pv m ' . Set .

e q u a l t _ o: 0 _ f E _ des ir e d 1 . t f EGAts no t w _ n t ed IGOR 1 Specffte s w _et_r co r r e c t tons for g r ound re fl e c t ion b a sed on + " - dS delta, O r c _ lcula t ed c or r e c t t o ns _ # pend t x A of Re f .l) _ re . to b e al _ Pl t ed whil e ex tra pola t - Ing the noose level fro m the a t r pl a_ e to th e o b server, s e t eo.ual t o.

,.,. 0 If calcu]ae ed c err e c_ 1ons ar e m ade (Note: See X _ ,ND,FI, D,ZNR,Z N;) .

!i : 1 tf a . del t a ot' • 3 dB.ts t o be used.

I _ UT(1 ) 0 An et ra y t o a llo w up to 7 diffe r ent : o u tp u t repo r ts e r a de fa u lt r e p ort wh i ch g t ves a Ite a Ct _ , P N L, TC _ L: tf _ a r r ay , : ...... EPNL a nd a I page su m a ry e l _ a ss _ t , lons • (7) G u n der _ 4ch tl _ ru _ w as made. O _ er of Inl _ t s f m a t _ rtal, e.g.

tl B UT(1) = 5,4,3,2 _": 11 _ I _ I'(I,) = 1, 2 , 3,4,5 ( Note: Sec t ion 3.3, S _ ple ............ = 1 T y pe 1 _ epo _ ; total SPL at the c a ses _ _ 11ustrates the observer fo r each of th_ 17 angles v a rtous output repo _ (10 _ 20 : 3 _ ., .170 _ fo r eac h of th e d e scrib e d _ y t h _ S t _p u t ,) frequency b a ndsand observ e , p e st t torts.

- 2 TYpe 2 r_ ort; su g ary of op t tons j a s sumptiofls u ,de r wh t c h t h e ca s e was made.

= 3 Ty pe 3 v epo e t; S _ L, for eacl _ co m ponen t, at t l _ obs e rv a r tn th e s aln ema n Rer as t y p e 1.

• 4 T ype 4 report : ; f11g ht p a t, / ob s ewer geo_et W .

• 5 T yp e 6 report; e x trap ol a tion co r rec t - lO _ lS .

• 6 T y pe 6 repo r t; t o t ll f r ee-fie l d, t fidex (r a dtus of 1 meter) SPL's for a ll angles, f _ equenc t es , a_ fdobse r ve r poe t t:tons.

• 7 T y pe 7 report; free-f i eld t ndex sp e c tr a for each c omponen t .

3 .......

I 1 ' V arSa_ l e Un _ s De fa ult De_ c rtp t i on N a m e I S P TRM 0 Speci f ies t h e t y p e o f fr e q uenc y ba n ds to be us e d 4n th e c a lcula ti ons. Se t equ a l t o: 0 f o r 2 4 p r e f e rr ed 1 / 3 oc ta ve b a .d s I f o r 8 p r e f e r r ed I / I octave b a nds I UH I T 0 Sp e ; Ifl e s wh ethe ri n pu t p a ramet e r s a n d e ut p utre po rt s are in MKS o r E ng l l s h u_ Lt s .

0 = M K S , 1 = Engl i sh un i t s ND 3 Nu m b er o f dat a p ,t nts f o r the ground nor mali zed co m plex im ped an cecurve.

(3 _ ND _ 25) (Note: Use onl y if IGD k =O, see X KN , F k D , ZN R,ZNI).

N HU MI D Spec ifi est h e nu m be r o f en tri es i n each o f th e % r e la t ivehum idi ty(RHUMIDv s .

R AL T ) t a bles th a t ar e de fin ed by the us e _ f o r nonho m ogeneous at mo s phe ri c . c ond t tfons . (2 _ NHU M ID _ 50) ( N o t e: U se o n l y )f IA T M_S =2) . ) N L _ ...................... 0 Spec ifi es tab leo ut p u t f or no is e c_ i _L o ur es tt m at to, on f tle T AP E20 .

0 _ no outpu t 1 EPNLvs EPP , e l ev ati o n a ngl e.

o f t he ra nge at CPA 1°g1 0 :. 2 = s a meexcept pe a k PNL ( N ote: Ou tp u t r epo rt ing mu s t be s e t t o T Y PE1or de f a ul t - s e e I_ UT. If NL t PT _ O e a ch c a se wil l ha ve a no i se leve l, a n t : eng in e p e rf o r m a n c e p aram e t e r , an elev ati on a ngle an d th e 1og10 o f t he o ff- a x ts ra n g e I wr i t t e n t o f t l e TAPE2 0. ) ,,.

! ; N_ BS I N u m be r o f Obse r ve r s de f ined In S L D IS T ta ble . (I _N_BS_ IO) .

i

C N PRE S S pec ifi es th e n um be r o f ent r i e s tn e ach o f the p r essu r e (PRE S ) vs a lt i t u de (PALT) ta bles th a t th e use r de fi nes f o r non- ho m ogeneous a t m osphe r ic condi t ions.

i (2 _ NP R ES _ 50)( N ote: Used if IA T M_S =2) .

N TE N G I S pe cifi es t h e n u m b er o f d i s tinct t y pe s o f en g tne co nf i g u r a ti o n s t o be ,_ cons i de r ed (NTE N G _ 3) .N oise component ) p aram ete r s mu s t be de fi ned f o r e ac h _ d if fe r ent sou r ce .

[ V artab_e Unit s O e _ ....................... O _ c __tpt_ on Nam e _F.._ ...... Sp ec ifi e s _o ri um_ t _ o f en _ rte s t n c_ch o f the t em p e v , atu t ' e (Tem p) v s _ l ¢ lt: ud e (TALT)t a ble s th a t h a v e_ ee n de f t n ed b y _ h e us e¢ f op _n b _ m t g e ne o us a tmo s p he r i c condt't te n s . ( 2 _ NTEHP _S O) (Not e : Used- o _ ly if I AT _S - 2).

PALT(1) m.(ft.) _ EacI _ eat: W t a th is t a U le d e f ine s the a ltitude f e r _ he I)ressur a deft,ed by ' PALT _ O) m : i_ t.) t he c _e t _ ;imndtng e nt r y tn the PRES t _ ble.

Note: U s edonl y i f -ZATM g S-2,se e N PRES)..

PR E S ( 1) Al _( p s l a ) Each . e nt ry t;i t f _ t . s_: a ble d e fin es the p _s u : m f or the a lttt u de defined by .... PRES iG O) A _i RCt _ ........ th e _ er e espt) _ l t Jlg ent r y t n the PAL l " l_bie t (Note: U sedo n l y i f IA T _ $=2 , s ee _ ES].

RALT(1) _ .{f _ ) Eache _ tc y in rid s table deft n _ s tile a ltitude fJ _ the r el a t i ve h umt dtt y . de _ t _ - _ l _ t he cor _sp ond _ n g en t r y 1ft.

; _ I'H ¢ S 2, s _ e NH UM; O) .

RH U MIO(1) _ ;RH Ea _ l _ e _ tPy in f _ t_bt e defin es t he t*el a tt've h u _ dtt y fo r the al t tt u de ... def i ned I _ y the cOl ' _ spof_dtng e nt r y tn RHU Mi D( G D) _ Rfl th e R / _ T t _ bl e . ( N o te: U sedonly i f X ATJ _ .2, se e NHU MI D).

SL DX ST( 1 ) _ .(f¢.) Slde1 _ ne pestt1 _ o 'F Ist ob s erver.

( s _ N_ s) SLD I ST( N ) m .( f_ .) S i del i n e po siti on - o f N th o b s etWe _ ' .

SL O PE _ A _ Pc _ cftclim b ..gP _ dten t .(T a ng e n t o f cl, l mb a n _ l e ) , TALT(1) m .(ft.) E a ch _n_ y tn thts ta ble d eft, e s the a lt:t _ de f op the te m pera t u r ed eft h ed .. b y t h e coPr _ dt _ ent w tn t h e T E_ T A[l'i.) _(fl,) t a bl e . (_ t _ :- Use d .J_nly If iA TI _S -2, TE M P(1) °K(°R } E a che nt r y i n this tab le de fi nes the _ mpePd t uPe f or the a l ttt ud e def i ned ...... b y th _ cor r espo n ding ent w In th _ TALT TEMP(50) °K(°R) ta b le . _ (Note:Usedo n l y t f X AT M_ S=2, s ee N TE M P ) .

: T C G s ec. lO. N o r ma llztn _ti me co n s ta n t tn seconds ' usedtn t h e EPNL cel c ,. + !at t o n s(No t e: " i_ See BCa,FLR).

V ar tabt a Untts D e fa u lt D e s c H p tto n N in e U AZRAB ( 1) dB / I(N( dB / TO00ft, ) Us e r deft n ed at r abs o rp t i o n c o e ffic i ent f or the frequency _ n d s. (Note: Used onl y tf IAIR - 1), N= 8 for 1 / l O.B.; " UA i_f_ (N) dB / K Mi d l_ / lO00 f t.) N 2¢ . _ ' er 1 / 30.B.

X K N _ " N _ v e n umbe r r a¢to, XKN = K / Ko~ C o / C, where Co = speed e f soundt, ate, C = s peed of soundt _ =geound. (Note: used on l y tf IGDRO, s e e FLD, ND,ZN X ,ZRN).

_ 5TRICTIO N . XKN > O.

ZN _I ) Se e AppendixA o R e e l p erl : of (Z I ]Zo ! for no _ m a l t zed of R _ f. 1 < g r ou n d tmpeaa n ceoata curve. (Not e : - " ZNI¢>O., see F LD, ND, XKN, ZNI; used Z N R(2 _ only t f I GDR-O).

_, ZN I_ l) [mg t na W p ar t of -Z1 / Z 0 for nomaltzed gr _ M t rope( l a n ce d a t a c ur ve. (Not e : See Z _i ; _) FLD, ND , XKN, ZNR; used on ly i f IG DR0).

( l_ ote: T h e r e act ance of the g round ts usu all y ca p a c itive, he n ce n eg a t i ve. Th _ optton I_ n r e p e rm t ts the user to spectf y postttv e values _ tch ar e tt'ea t ed a s cap a ct t tve reac t anses . )

t

Ib ' 3 ,Z . . . - N o _s e Co mpo, e _ P _ a me_er_ (_ ; N_I_IN . b _ u t _a sets ) A s m entioned p r e v t ou s t y _ _ h e prog _' lm I _red_ ctscruis ef or air c r a f t e qu i p pe d w t _ 1 one t ( _hree d i ffe r en t f 4 , pe s o f p r op. _ l s i on sy s t: em s, E _ c h co _f tgu ratt on i s . t r _t ed a s e L s e t of no ise co m ponen t,ea cho f w h i c h_l J h ave a sep ara te &t_I SL N da ta set, E ach -ce n ft g u l'a t £ on is treal: H t ndepen _W m _ ly a ndm ay conside r ________ _ a nys u b s et o f the. . f ollow i n g 12 ,otse c o m pon en t m odule s _ 1 _ -_ L_mary jet _ + 2, I_t m u y . and- S e cond ary _at 3. Co n e a ndT urbi ne 4 . Co m p r essO r an d F a n I nl e t 5. Pa_ E xi t 6. A u g men t er W i n g 7 . @ I _ , n. E 1 a p 9, E_ lec t or- _ p _ esso _.

1 0. P_ 11 _ 11. He 1 tra pp e r , P _e ll e r o a n d Tt 1 _ R o t o r .. _ 12. M e a su _l a The or der o f the abov ec o m pon e n t_ has meantn g only i n _ eSpectto the I nte r n a l o rd e r o f t he co m p ut er1 _ ogm m _ nd . a m e an s o f td entlt?¥t ngth e d a t a inputs per n(_ tseco m po _ en (_ (e.g., i f au _ ent e r Wi ngnoise t s t e I} e p r e di c t ed , t he in pu t, _ I T Y # E-6t n _ e E N_I S IN dat _et t _l i c a t es t _ t he pr o g ra m that : . t h i s da _ s_t appl i es to _er .-wt _ no i_ e L_ lse _ 6 , G AI_ fi , DE L ..$6 , etc , a re t npu _ un i q u e _ o _e d _ se t w he _, I ? _ E-6). Onc e th e or d er' t s S elec _ Ied f or t he first c a s e_ t t m us _ b _ m ln _ the C -t _ r a . _ su b sequent e ases.

: An _k l- lf,_ al u _ e o f t t_ td _ n _ t t ytng numbe _ a 1%O w s t h _ 1 1 n l ng a ttehu _ t len a n dco _ft gu r a t t b n ¢o r_'e c _ t _ t n pu / 3 _ o be desc ri bed _ fl a Sel }_r_ s ectt on -_ htc h ts r e f e r red t o by t he v ari ous n _ se co, _ po _ e n / : sect:tons r ath er th an r epe a / : e d d e sc ri p ti ons in eachs _ cf. i oh. Thi s ca, b_ d _ e 1 _ thts , _ n _ e r sin ce , f or a n _ nois e cO _ ponen _ , if th e r _ i s a l _ nt n ; co r_ ct t o _ or tf co nfi gu ra t i on cor re ctions a( '¢ destr ed, th _ t i ip ut d _ r _t va r t al_ le n am es a_ e dtffe_ en t by f_ e appen d ed td e r lttf 2 i mg nufn B6 _- od th e e n d of t he va_ table na me [ e .g. L ] N3-1 (core a nd tur bin e l i ning a t ten u ati on) , L IN 6-I ( a ug men t er win g l _ nt ng a t t enu a t i on); IC_R I-1 (prt m aryJet co nf igu ra tion c o rr ections) I C _R il=1 (h e 11cop t ercon f iguration " cor r ections) e t c. ] .

t 1 Twodat _ tnp ut s fo e e a ch d t= t:tgc t s ou r c e n _t se configu ra t i o n have a sp ac ta l -p 1 _a t n e ach¢o n f tgu r _ ¢1on.data se t , (t,e,, th_ m u s tb e d e ft no d tn t; h efirst & N t _ [SZ N d a ta- s el; tn e =oh conf t_ u ra t.t o n, ) Thesetnput s ar e: NT YPE v t bt¢l _ s pec i f i es th e t o _ l n u m b e r of no t e co m ponents , (& Nm| SI N. da _ sets) t n a to,figu rat ion. It; tnfo r ms th e p rogr a m to acce S Sda _ fO _ .J _ YPE nots = co m pon _t s, NENG _ clt s pe cifie s t he number e f Ide n tic a l power pl a nts on the a i r c r a f t .

_ 3.2.] LtntngA t tenu _ t.toh-a _ lConfigur at ionCo rr ectio n s _ , I The follo w ing sectton desc r ibes. t he d ata _ npu t sfo r n otse c ==p o n e, _s( tn¢l = dtn g _ sep arat e ¢ _ po. e n t fo r _=_ su _e d dat a ) wh e _ co n ft _ u ra , t _ n co _ e:t _ o. s ape deS t _ e d$n =h e p re _ c t t _ p r oc e ss for a p arti cul a r ' n o i se ¢e, _ X _ mt. F or - 11 p_ tng s t ten _ ¢tor _=_ o rr ec tt ofls tiff s s ec ti o n a p pl t_ s 6_ y t o the cO _ and tu r b tn e , I;o _p_ esso r _d I' t n let f an , ext t fa _ , au _ t _ n t er w tng, 11ft f an , a nde3ec t o r - s up p r _ s s o r notse m dules. The inl et va r t ab le n a _ e s d e sc r ibedbelowd _ ffe r between no tse co _ ponen _ s o n ly by the ap pende _ n _r d esc r ibe d t n t he I nt ro d uc- t ion of t he N ot s eCo , po t en t P a ra me t e rs, l.e., IC _ , whe r e _= 1,2,3,4...

12 fo r t he R _r J; = tgU l_ r_ _ t s e co mpo n en _ ( & N I _ ISI N d a t a _ e t ). l Wr t _ b l e Unt t Def a ul t Descriptio n N a n te ] _ C _ Rm " _" 0 = 0 _ n d tc a t es n o c onflgu _a t tO _ c o r ro s ions- .

• I- _ B co rr ecCtons ar e a func ti on of | dt r ect t vtty an gle o _ ly = 2 & dBco rre c t ions a s a func ti on o f f r e q uency (1 1 3 o r 1 / 1 oct a ve) an d dt r ec t tVt _ angle.

LINm 0 = 0 _ ndt c atesno 11n _ ng at tenu at io n tn co rr ec t ions l, • 1 l l n l n g at £ e nu at lonco rre c t ions are c a lculat . e dby p r og r am Lt n lng At_e_uatt0,fi Pa . ra._e ,tprs: LIN mf O CF m m / se c(ft / se¢) speedof sou n dt n the flo w . ) Ck _ ; _ f: _ t t o ? - o r - V _ C C '-V ev _ ` = c _ 's _= 1 _ pe. _ . _ ' _ tyc J I _ _ . = /epe H c _ e, Ht" t , _ of f - k . . o+ker = V a_ 't A b _ e ..... U n t _ . De f aul t Oe. _ . r _ p _ ,mL_ N a me ED _ m( t t ) ef f ectiv e duc t h et gh t f o r _t n t n9.

(Note: u _ ed o ,l y If l in g O) EL( D Hm _ 1 _ r a t t o of e f f ec: _ t.v e l'lntng t p _ tment.

le i th t o duot h _ tght. (N _ t _ " used onl _ tf LGI _ =O . ) F _ ' _ Mathre ; tuber o f t:he f low.

I DPm 2 lt _ t x tg d es| gn pe _ n t, op tio n.

• 1 f.or s tngle d r _ tgn,potn¢ .

- 2 f or multi ple _ estgnpoint IL _ Ym 1 • 1 fo r stngie lay er 1t h i n g ,., • Z f o r d e ublela y e r 11 _ tng l l_ 0 spec i fies w _ t:he r program calcula te s or u s e r de fi nes t h e peakattIe l lu _t ton f ur ea=bt a t' ge t f reque n c y .

: - 0 prog r amcalculates ..... • 1 a S e _ de f tne _ -PLJ _ values LGHm 0 s _ ec _ f _ es wh i rl e r i _ ' b g r_ m Cslc u l a tes p _ ak a _ . t eauatl J _ n ust _ 11ntnggeome t r y or u.se r - d e ftned e _ fe t :ttVe duct h e tg h ¢ a no r a _ o o O f t r ea tmen t -le it h to effec t tvi _ duct ,, hetght.

• 0 user tnp ut s £DHm a ndEL g H _ • 1 us e r tnp u ts l i ning.geometr y = ( see: R I_ andTLm) ( N ote: u_ onl y _f ZHAm=O) NTFm 0 n _ ber o _ target frequ e ncies tn t t _t ng ( l_ xt _ , _ ts t0). I f NTFm ts set . - 0 *, . he ; _ p u te _ p _ J r m w i ll set t _ _ rg e t f requenc y_ TFm.¢o t h e cur_ . entca _ cul a te _ ch a ra c t e ristic f r e quencyfor a pa rt icular n e t s e compone nt , , _ ' hechara r , tertst _ c .

f t _ u en c y t s tha . t f_ eq ue _ c y. _ e _e the s p e tt _ lev e l ts a t a mcxlm _ .After t t fe defau _ taf3 et f requ e nc y ts s et , _ Fm ts set t o1.

N _ 0 num ll_ r of walls tn lt n tng.

(Ha x t _ um fs 10) PCTAm ( 1) f, 100Z pe _e nt tr ea t e d for 1st ta _ et f requency • te e _ e _ tt PCTAm( N) f, 0 percent treated f o r Nth targe t frequenc y N - NTFm t t , i t Vari_ 1 _ U nl t D efa ult , - ...... C ) eBcrlp t i o n Nam e PL Am(T) d B pe a k a tto nua t l o n f o r Is t t argetfreq u e n c y (N o te: u_a d o n ly tf IM / _I+_ 1) P_ : / _ ( N_ d B' peak a tt e r _ t t o n f o r Nth t Qr g e t fre q u o n c y N = NT F m R1Wm(1) m( f _) r a dt _ o f 1st wal l o f ltn t ng.

o ee e o e R _N) m (f t) r ad i us o f N t h w all of l i n tn g (N ote: u _ ed o n l y t f LG Mm- I , N - NW L m ) .

TLm ( 1) m( f t) tre a t me nt len g t h o f I s t wa ll o f l i n in g .

I¢= NW L m TL m (N) m(ft ) t r e a t m e n tl en g th o f N th wa ll. " .

TFm( 1) Hz Cha . ra c tert_ . _ tc fi r s t t ar g e t fr eq u e n c y (N ote: tf pe a k noise NT FmO, TFm ( 1) wi ll b e reset t o t he ...... fr eql _ enc y cu rr ent c a lc u l a ted ch ar acter i s ti c fr equei _ c y ) I TF m(N ) _ 0 N th ta rg et fr eque, c y , t N = RTF m Ce nf : lgura¢ton _.frectlO L_ : I C C Rm # O I _( 1 ) dB T a b l e o f A dB co rr ec ti o ns a s a f u t lct t oa o f d t_ ct t v tt y an gle s only. ( N _t e : ...... 1 t eR m - 1 ) ,_ O C t (N) d B N = N_ R orB( l) ( t l _ Table _f A d B c o rr ecttmls a s a fun ctio n o f fr equ ent y band n umbe r , and the d t re ct t v tt y angles . Th 4 s table ts i np u t ...... a s s st _ le ar r a y whos e ind i ces copras- ., po n d tea two dt mQ n s to na l arr ay: DP M ( m ) _ X( t , J ) whe r e m " t + K ( j -l), a n( r (t, J ) correspond t o t tl e p . s b a nd n u mber a n ti dt r ecttvt _ angle index, Pespe e t 'Ively.

DPB(M) Note th a t K - 8 f or f ull o c tav e s o r 24 f o r 1 / 3 octaves. A pplys only if IC_R m=2.

P S C R( 1) d _ lfees Tabl _ of d t r . e s t tv tt y a ngles co rr esponding ...... to ei th e r D _B _r r ay or DPBa rray depending on I Cl _ Rm setti n g.

PSC R( N) degre e s N = N PSC R N PSCR N u m be r o f d tre ct t v t t y a ngl e s o n wh ich th e c.on t_t gu ratt on co rr ection table ts b a s e d (2 _ NP S CR _ 17) L I t J 3,2,2 P r_m_ J a_ a ,d P r tm _ r ¥ F l u s s _ ¢o,Ua ry Jet Not so Tht _ s e c t | o n d os c rtb , s th e su bs e t ,of tl _ &N C ISZN I _ a r_e t _r = , _ d t, pr e _ c t tn g e t.l; b _ , p r tm a r y J_ no _ _ ' ce m btfl e d p r t _r y 6 rid s e co _ l a_ y j u t no t s e . 1:hos e Inp u t, a r a needed t n addttton to t h e app ro pri a te &r _ OATA pa r ameter s Iles c rtbedp re viousl y . (Note: Fo r Ad B ;o _r oc t t o n _ , .............

s ee t he s ect t en 3,Z,1 oll 1 1 n tngatten u aMon _ nd c onf.Jgu r at;ton " co rr ect , le ns )° . _ V ar table Unt t Oefau l t De s c r i pt i o n L ITYPE Ind i c a tor fo p p r . tma r' y o _ comb l ned pr t ma r ,¥ : tnd second aryJet no t se.

Z T _ E = 1 t _ o _ , p _ '. t ma ry _l e¢ ITYFE = 2 fop p ri mar y & s econda ryj et: Tht _ var 4 able mustbe specif i ed tn the ) f _ , , _ st cas e fo r e echfl o ts e ¢o,I po_ en¢ f op .

H ch d i fferent not s e sourceoonf l gu ra_ ton.

: N EI _ 1 N _ II _ ' of e,g t ri ls . Zf other Cha _o ne, : N ENG m us _ . be s t _ tf _ed fo p the ftPs t ; , ¢( _ rt t for e _ h _ pe of propulsion ) s y sttlm.

_ N TYPE t _ of no _se comp o nents tr _ a c a n f tg - u _ a t to _ (Note: NTYPE mu_ :b e speclf1 _d ofl _ y 1, _ e f t PSt &I _ IS % N d _ t _ set of e _ ¢h¢or _ f _ gur _ t _ o _ _n t h e f t P s t ¢ _se

o f a _ 'un.)

) P Ptn_P-y Jet P&r_metet 's : AP l m 2(ft2) _ t'o ss - s_ , l:lon a l a Pe _, of t he nozz _ e _ • : ARGdT1 degre e s 0 engtne t n¢1 t n _t ton _ ngle .

D _ tl m(f _ ,) d _a eete _ , o f ne z=l e

_ f zero o r . neg _t_ ve _t he d _ mete r _ 111 I _ c _ lculat e d ba s ed on noz _ ,,a (AP 1 ) NJET1 ; o d e f _r _ y peo f tn _t dcta 1 _ 1 - 1 u s er def i nes AP 1 ,PR1 , TT1

N O _ r l = 2 u s e r_ e f t _s _P l _ R 1 ,TT I

NJ ETI 3 use r de f tn e s API, W PI , V P I, ' pl u s AS2. _ 2.HS2t f se¢ _ dar y. .

;let n o t s e ts t O be co ns ide r ed NCgDEt 1 code f op St ro uh¢l curv e l _ E1 = I for f l i gh t spec tr ul _ c ur ve I¢ _ '9E1- 2 fop groU_ l d spectru m curve PR1 noz z l e pPt ss uPe r atto, t. e ., Coral pressur e d _ vldedb y fr e e - s tr e am s te tt ¢ p r e s su r e.

1 "1"i °K( ' R) _ t to t al t empe r a t u r e ........... "_7 7_ ._.

V _ t Q b.1 O U, t't I _ ¢ _ u1 t 0 o,c r t p tt Q n VPI m / see (ft / sQ ;) volo c l t y of jo t e x haus t r o ' l, _ ttv t .

t _ no z z le W F1 _ / s oc ( l _ / s ec) pri m ary m _s f lo w Secondary O et Psramoto_t The f ol _, g t h r ee pa ra mete r s a r e ne e d e d tn _ ddtt t o n ¢o t he oJ _ ove fo r cemb |ne d _t ma _ _ s e e o n da w Jet nots e . ( X TYPE - 2) V S 2 . - m / s e e (f _ / s e ¢) se_ on dar_ Jet veloc t t y . eela _ v Q to noz¢le t A S2 m 2( f t2) s dco n d ar y J e t nozzle a re_ _ 2 kg / se c (lbm / s _ ) seco n d ar y massflow 3 . 2.3 Copea n d _ f _ the N o t se Th t s sec ti on d e scHb e c-tJ _ sub s e / _ of t h e _N_I SZ N p M' _ l t _ l _ s use d to predtc _ co r e a n d t u _ bt _ notse. Thesetnputs are sp e i; _ ftedtn a ddt tt oh t o t he &G _ TAda t a s e _ d _ scHb _ pr e_ o us l ¥ . ( N ote: for z _ d B co _ ' f'ec t tom s , see t h e s e ctto n 3.2.1, o _ 1 1 n t n ga ttenua tio n a n_ co n f i gur a t i o n corr e c t _ ort s ).

Vsr tab t e Unit s _a ult D e scription OELT3 de g re e s 0 Engt fl e at tt t ud e a_ le.

ISH3 0 S _e ctft e s ,otse t y p e to b e pre d ic t ed .

I S _ 3 - 0 for co r e & turbt n e n otss I S _ 3 - 2 f _r c _ Penots e o n ly IS_ -- 3 fo r tu _ b | n _ nH s e only _ YPE I TYP[ - 3 fo _ core _ ,d t urb tn e nots e p _ edtc t_ o, Tht s v _ rtab l e m ustb e s p e c ifie d tn the ftPs t cm _ fo _ e_ch not s e c o _ pone,tfo p eachcohf _ gu _at_ o n .

e , i IL_ J _ ........................

i I V _ rt _ bl O Unt _ a Dol s .1 t U o_ cr T pt ton N EN 6 1 Nu m ber o f engi n e s . If o f fice t llon _ , mu g t be s p e ci f i e d f o p t he f t r s t n_ i, o ¢o m peno n t O f c o c h t ype of p r apul _ ton ' syst e m .

HT Y PE 1 Numb er o f notoe type , t n a con f ig ur a ti o n , (Note: NTYFE m_ t be s pe c i f i e d onl y tn 1:11. ft _ S t & _ ISIN _t a se t o f e a ch ¢o l ff t gu _ a t_e_f o r t l _ e f t rst c ase o f a

b r un)

Core_se. _ ame_a_v's ¢ M F3- _ k t / see(l _ / s e c ) Co m_ ste r co , r oo t ed mil s fl ow. r , or , e c _ ee tm sea l e v e l, s t _ ,tc condt t , tons (1 ATe, lS°C), o EK3 Sp e c _ f tc eq _ tnecor r ec e to n (see T a ble10 trt Re f . 1).

JB3 ];l _d cato e . fo r W P e -o f bu r ner _ 3 - 1 f o e a nnular W P e bu r n e r _ e 3- = -- 2" fo _=_ n W P e b ur n e r P P 3 ....... Tur g tne t ot e r p _ essu r e _ ' a/ d e _ t . e ., tur b t,e 1,le t total pre s sur e dtvtded b _ -guel _ e extt _e_a l pr e ssu re .

TT3 "K('R) Co m l _ u s t or,. _L t. . t _ L & t_ _ e _ ' a t u re.

.. Tu_rM ne Per a_te rs : : BN3 Number of b l a de s fe P t uHH e e last s ta g e .

C L S3 _ / se _ (ft / se ;) _e_ d e f _ otmtla t l ast tu_ ' b _ n e st:a _ .

_ CLS3 - t sn_t se*,t¢ w _ 11 b e esti m ated t n te _ n _ y l _ y _ r _ .

, CS3 St; at or. / _ o t oP SI _ e A :t P _ I (See Ftg,re 56 t n R _ f. 1).

DT3 re ( ft .) Tip dt _e_ _ OrturlHhe l e st s _a ge , ro _ ot_ , ILeq _J e ed ofll y t f VTR3 _ s unkrtown, I C3 ] _ ndt _te t ' f o r ,ozzle c onl _ l u_ a _ lo n type.

[C:_- 0 f op duel flow nozzle s o f turbo- : ' f a n s or t urboj e t s ; IC3 _ 0 fo _ e _ g _ r _ e s w _t h ret r ac t ed pH- i " mary f lOWn u zz le (e.g., _ IT B D).

_ P M F3 kg / s a c(1b _ / sec) Prim a r yma ssflow.

SS3 RP M Sh aft sp e e d .

l I V ar t a bl o Unt t_ I: _ u _ .......... De _ . _ tp t to n TU3 ° K( °R ) T ur b|ne o _ tle _ tot _ l t _m por a tuPo req u tr _ d onl y 4f CLS3t s unkno w n, VTR3 .......... R/ _ Q Q VV _ oc) Rel e t tvo ttp sp e edo f turbtno l a s t s t ag e ro t or.

3.2.4 Compr oss_ , F e n X_ lo t and _an Extt Notse Th _s s e ction des cri bes t h e subsetof the&N gl SIN p a ramet e rs used t o pre dtc t t h e temp reuo_ , fa, tnle t an d. fan e xt t n o 4 s e . These1, p u ts s re nee de dtn ad dt¢ t on to t he a ppPopH a t e& GDATA p a r ame te r s. (No t e: Fo r _ dB c orr e c t io ns , se e the s o c tto n 3.2,1 on - l _ n t n ;_ Lte n ua t _ t ena nd can- f i g u ra ti on co r rec ti o n s) , V a Ha b le U n tts De fa ult Description DELT4 _ d e g _ s 0 E h gtn ea Ctttude a n glo, F PR45 ( I) Fa _ o r c _ res s or p re s s ure r at t e .

I_I <NSTG 4 5 I T YPE I T Y P[ _ 4 f o r co mpres s ur o r fanin l e t n oi s e ITY P E B far f an e x tt notse This v aria ble mus t b _ speci f ied t n the f ir st c a s e f o r e ac h noise co m po n e n t f op e ach c o nfigura tio n.

N B 4 5(I ) N u m be r o f c o m p re sso r o r f a n b l a des f o r ea c h stage l _I ' N STS45 NENG 1 N umbe r o f e n gtfl es . I f oth e r th a n 1 , mu s t be sp e c ifi ed f o r t h e f i rst n o i se _ o m ponel _ ; o f each ty pe o f p r opu l s io n W st _ .

N T Y PE _ l _mb eP of n otseco _ pon e , _ s i n t he c o nf i gurati on. (N ote: NT YP E mu s t be sp e ci f ied only tn the f irst & N ¢ IS IN d a t a s et o f e a c h c o , f_g ur a tto n f o r th _ f i rs t c as e o f a run.)

N STG 4 5 0 N u m be r o f fan s t a ges l _N_ G45 _ RN 145 R_ N Rotor rota t ion a l speed.

R 5545 (I ) pe r ce n t M ini m u m rotor / stare r s pa c in g l _I_ NSTG45 i I ,_ I , I : ) VarJ a b l e _tts O efau lt Oesc rtpt to n R T$45 0 Re l attv e t tp Ma ch nu m be r o f tYhe fir s t : s _ g e w l th o u l I n .l e t gul_ v a n e s ( I . G . V . ) .

I f le s s th a n o r eq ua l t o O , IGV w ill be U S _ ed f o r _e fir s t s tage. If RTS_s l ess tha no n e b u t greatertha n z er o , _ere I s no _ z z s aw c o mp o nent.

Fan InletParameters ( I n a d dl t l o A_ t he i_ u t s above f o r inletfan n oi s e,l.e. , ITYPE = 4.)

c _MR4 F a n p re ss ureratio_en th e relative ) tt p Ma ch n um b e r e q uals 1 . 02 5 .

OI_ 4( 1 ) m ( t t | _ss o r o r In l e tfan d iam ete r.

(l , I(N STG45), = Fan Extt Pa ra mete r s: ( I n at ld t tton t o t h_ fir st s et o f i n pu t s fo r fa n ex lt no i se, i,e,,I T Y PE=5 . ) : ,_ _ 5(I } _ ( f t 2) F_ dl sch ar_ a rea l _I ( N S T G45 I ' BP R 5 Engine byp u s ratl. o , . _2 / fi 1 w he re • r _ l. . .pr tmary ma ss f lo v_ : ' - t _ 2. . . _ econ da w m a s s f lo w NI 5 In d i ca t o r f o r d ucl: t ype =0 f o r sho r t fan d uc ts -I f o _ " l o ng fan duct s wlt h r e tracte d prim a r y n ozzle , t. e ., th e J TSD eng i ne.

) =2 f o r lon g f a n du c _ s wt_ : h a ppr oxi ma te coplan ar p ri m ar y/ seconda ry nozzle ex i ts .

'- - 3 f ar app r ox im ate 3 / 4 leng t h fa n duc ts .

3 .2.5 A u_ ento r Win g N o i se Th is s e ct i o n d e sc rib es th e subs e t of the & N_ ISIN pa r a m ete r s used to pre di ct t he a u gm ente r wtng n oise. These i nputs ar e n e e d ed in a dditi on to t he a pp r op ria te &G _ AT A p aram e t e r s desc ri bed pr e v l o u sly. (Not e : Fo r _ d B c o rr ect i o ns, s e e t he sec ti on 3.2 . 1 o n ltn t ng a t t en u a ti on an d co n - t figu r a t i o n cor recti o nS ) .

V a ria ble U nit D ef a u l t Desc r i p tio n AD6 _ 2( f_ 2) flozzle d i s c h ar ge a r ea .

DE6 m ( ft) E ff e ct i vedi ame ter( h y d ra u llc d !_e_e_ ' _ , D E =4_ 6 perh ne ter = 2H / (I+H / L) H Is slo t h e ig ht , L is slo t lc noi_.

2 5 | l V _ r ta b i e Un t t: Def a ul t Descr i p ti on DELT6 degrees 0 Fl a p a ngle rel a t i ve to t he ho ri zon.

GA Y _ 6 0 | _4 R a t i o o f spec ifi c h eats f o r e x ha u st fl o w.

IT , Y_L __ . . ITY P E = 6 f o r au g m e nt e r wi n g n o i se , T h i s varl a b l emu st be s pecifiedIn t he fir s tca s e f o r e ach no i s ec o mp o nent f o r e a ch con fi g uration.

XN P R6 N ozzle p re ssure ra t i o - t he t o ta l pr essu re a t the nozzle ex i t d i v i ded b y t h e fr ee s C r e ams t a_ : t c pressure.

N EN G 1 N u m be r o f engines. If o th e r t h an 1 , m u st be spec ifi ed fo r the f ir st n o i se co mp onen t o f each t y pe o f p r op u lsi o n s y ste m .

NT Y PE 1 _ ;u m be r o f no i se co m po n ents i n a co n f ig u ra t i on. ( N ote: NT Y PE m ust be spe c ified onl y I n t he f i rst & N ¢ I SIN dat a se t o f ea c h conf igur at i o n f o r the fir st c a se o f a ru n . ) TT6 ° K(°R) Tot al t e m pe r a t u r e at t he nozzl e exit .

3.2. 6 B to w n Fla p N otse Thts sec t ion descr i bes t he subs e t o f the _N_I S IN p a_um ete r s used to predi c t the blo w n f l ap no i se. These inputs a r e sup p lt e d i n a dd i tio n : to the &GDATA p ar a mete r s. ( N Ote: Fo r & d B co rr e c tions, see se ct ton 3 . 2 . 1 o n i t ntn g atte n u a t i o n and con fig ur at ion co rr ect i o n s).

V a rt able Un t t s De f aul t D e sc ri pt i on N il m E( i t 2) N ozzle d i scha r ge ar e a .

D E LT7 deg r ee s 0 Engine a ttitu d e atlgle.

DL7 D im en Si onles s d i st a nce bet w een nozzle ex it a nd tar get poi nt on t he f l a p( s ) w he n th e n om tn a l f l a p a ngle ts 45 °, i.e . , L / D tn re f e r ence| _ :; _ ,J F , Z, _ ¢ " ON 1 m(f t) Nozzle ex t t di am e t e r o r h y d ra ul i c d iam e t e r.

FANG7 degr e es 0 Nom in a l f l a p a ngle.

i I ( 2 6 _' I ) V a _ t a ble Untts O e faul t De sc ri pt i on HD7 D t me _ l _t or L 1ess d lst _ nce be t ween nozz l e ¢en t erl t ,e a nd m e a n w t ng ;herd, t .e., J W D t _. re f erenc e i) _ c . 3", _ .,l , S" 1TYPE 1TYPE= 7 _ o r blown fl a p n D t Se o T h t s var t a ble mu s t be spec i fied tn t he f i rst case fo r e a ch _ o _ e t YlL e _ _0 j_ _ j . _ .c _ . .

c o _ ftgu rat ton.

NENG 1 N u m bero f Ide n ti c al no t se sources. If ) o¢l _ e _ t h an !, m u s t be s pect f t e d f or t he fi r st c a se fo r each conf _r a t ] m _ .

NTYPE | Nu m bero f norse _ p e s | h a c o nfigurat i on.

(Note: NTYPE mu s t I _ spec 4 fted onl y i n -- the ftrs t &N ¢ I _ IK data set of e a c h c on - ) f t s, rat _ e e f _r the f irst ca se of a ru n _ ) PR7 No zZ le pre s sure rat i o, f .e., to ta l pressu r e ......

: ¢Hvtded by f r ee-strea m sta t tc pres S _JPe.

TT7 ° K( ° I _ Total Temperatu r e of e xhaus t ¢L nozz l e ex tt .

3.2.7 L t_ t_ Fa n No ts e Th]s sectton de _ cr t bes th e s u b s e t of th e &N . _Z S IN p a r a m eters used t o il p r ed t c t 11f t fan notse. These tnputs e r e supplted tn a d d t t ton to th e a pprop r i at e &GDATA pat t e r er s des _ r A bedpr e viousl y . (Note: fo r 6 dE corre c _ / o n s, see s ec _ ton 3.2.] on 11n t ng at ten ua tion an d co n f igu ra tion co r e ec t lon s ).

Var t a ble UnLts De t aul _ Destrt p t t en AREA8 m_ (f t 2) Fan dts c t _ ge are a . IF = O. N o a ft fan i _ts e ts c a lcula t ed.

CRFPR8 P a n p _ ssure retto _ ol r JLIzePel att v e ttp l _ ch n_ ber Of 1-.02 6 .

DELTA8 deg r ees o Engtne at t_ ude an g le.

D I AH8 m(f t ) Fan tnle¢ dta m te r . IF - O. No tnl e t f _a nnois e calcul a ted, FPR8 Fad pressu r e Pa t to _ t.e., t o t al pressure a f t of a f an stage dtvtded by to ta l pres- sure Just forw a r d of th e fan st a ge.

[TYPE [TYPE- 8 for | tf t f e. llo ts e. Thts v a rt _ ble must be spectffed In t he f tr st c a se f or e a ch no _ se t y p e fo r each ¢on f ]gu ra tton.

_ NB8 Numberof fa n bl a des.

V ar l a _ L1 _. U nl t S De fa u - l- t Desc rl p t l o n NEN6 1 Nu m be r of 11 f t fans be t ng con s i d er ed.

Z f o t_r t ,h a n i o m us t be sp e ci fie d f o r th e f t r s t ca s e f o r ea c h con f tg ura_d o n .

N TYPE | N um be _ ' o f notse t y pes tn a conf i gu ra t i on .

( N e t e : Hu s t be spec if ied o n l y t n th e f tPst &N _ ISIN dat a se t of each co nf igu r ation f or the f t r_ t c a se of a r u n .)

RN18 RPH Reto r r ota t ion a l Spe Q d.

R558 pe r ee _ ¢ Htnt m um _ toc / s t ato r sp a ctng.

RTS8 0 Re] at tVe t t p H a c h numbero f t h e f a _ w t t hou t t nl et gutd e va ne s. If RT S 8t _ les s t h an o P e qu a _ to z e ro t nlet guide va n e s a re ass u_ ed.

I f l e ss t h a n one b ut g r e ater th a n ze r o t he; re t s n o b u zzsa w.

3 . _ . B E J ecl:Or-S _ pR _ 'e _ so_' _t se Thts s e c tt o n desc rie s 1:hesu _ e t of t h e SN ¢ I$I N d a t e se t use d to p re dtct e J ec t or - g upp pe sso r no tr e. These t n g u_ s ar e supp _ le _ t n add _ t t or _ to t he & GDAT A p ar a mete r s descP - Jbed p revtou s l,y. ( N o t ' e: Fo r Ad B co rr ec t ion s , se e t he sec t l o n 3.Z. 1 o n 11 nt ng at t( ! nu att on an d con f igu ra t i on.)

V a rt a ble Untts O e _ aul¢ Des cr ip t ion AR 9 A r e8 Pet to o f suppress _r nozzie, t.e., prt ma W p l us second a; . yfl o w ar ea dtv t ded b y prt ma w flo w a rea.

AREAg n _ ( ft 2) Discharge a re a o f supp re ssor ,o z zle.

CVg V _! loct #. y cO e fft¢ t e n t for n ozzle .

O P . L _ degrees 0 Angle bet _ . ell th r ust vector &ho r tzon.

E M ACHg Exh a ust Ma chnumb(} rf o _ eje ctor ( onl y n ee d e d tf % E J g _O ) EXN M 9 Exhaus t H _ ch numbe rf o r n ozzle.

ZTYPE ITYPE-9 f o r ejector-suppressor notse.

Tht s vart a ble must b e sp e ci f ied tn t he ft rs t case for e a ch nots e type f o r each con f igur a t i on.

IE 0 9 0 Swttch fo r e j ector a nd / o r suppressor IEJg=O - ba r e supp r esso r IE _ g # O - ejec tor / suppressor V ar t a ble tlt _ Lt _ _ Def _ u11; D _ rtptton : _ N ENG 1 Numbe r e f eng t_ e _ [f o th e r th a n 1 must . b e spe¢t _t ed f o p the fir s t case fQ t" escl_ c a _t g uratt on .

NTYPE I Nu m be __ f not s e t ypes t n a configuration, (Note: NT YPE mu s t be spro u te d onl y _in , , t h e ftrSt _ l _ ISIN data set of eech conf i gu ra tion ¢O r .¢h _ ftr s t case e f a run.)

NUN 9 Number Gf dt s ch a r.geelements o f supp r ess er nozzl e .

• PA 9 m2(ft 2) D t s c _ je a r e a of eJ e _r ( r eq ui red only ' t f X E o o).

r • PCV 9 V e lo¢ | t y coeffic i e n t for _ ector ( req u i r ed onl y tt' 1(J9 f O) , _ . , P59 ATH(pste) S t a rt<: pre s s u r e i. n exh a_ t , at _nozzle , . (requfred onl y.. tf IE _ 9) t O) - FTS _ _ K (_ ) St _ t:l¢ te _ pe ra tu _ of ex _ ust, at, eJec t O _ . exit . (requt _ ed on1 ¥ tf 1 F . 0 9 _ ) '[l " _" S_ ¢H _ Hath numbe r o f t n du . ed second a r y _ t r i? ST9 °I _ °R) Sf _t tc te m per a tu _ '.e at ,ozzt e ex i t.

3.2.9 _ rop e llet N O tse Tht s sec t ion describes th e s ubse t e? t h e &N _ ) Z S I_ p ick eters used to pre¢ttc _ propelle _ , noi se ds tng t h e emptHtal proced ut- e de¢tned tn the re f e r enc e , The next SeCJ;t{, _ des c ribes tnl_uts for 1[hetlleot _t t _a l ro t or _ prc _ e4u r e whtch my b e used t, l.i _u e f t h_ s _ odule. These tnputs a re need e ( __ n a dd i t i on-C O the _ pp _ ort &¢ e &;_TA _ e _ d e scrib ed prev i ou S 1 # . (N et e: f _ rA d B c o r _ cttons see sec t to n 3 ' ,2.1 o n . ltnt n g a_ n u atlo _ and _ onftgu _ s tten cor r ecti o ns.)

t L V a ri a bl e Untts De faul t D e s c ri pt io n A S U B IO s q. m( sq . f t .) T o ta l bl a de ar es fo r one st d e of pPopel Iel'.

B I O Numbel, of p r o p elle _ b . l a d e s D10 m ( f -t) P - _ opell el, di ame ter.

D _ LTIO degrees 0 Anglebet w een gross thl,ust vec t or an d hort z on.

DSUBIO _ (ft) Cl _ ra _t er t s t t c di m ens i on fop the bl u e 1T YPE II'YPE= 10 fOP p _ ePeller notse.

T hts y ea` taBl e m u st: be s _ cf f t e d t n t he ftrst _ case fo r eecflnotse t y p e _ or each ¢onftg ul,a t _ on.

NEI _ i 1 Nu m be r of engtnes. If o t hel, t h a _ o _ e m u s tbe speciff L= d fop t h e ¢t_ st case _o r eachconf t gar a t _ on.

N TYPE 1 I _ nbe _ of ne l s Q types tn a g 1_ n c e _Ft g ul,a- ttO n_ (Ne t e: NT YPE m ustbe specified on l y S r _ _ e f t rst & N _ ISI N dataset of eacll conftgur a ttof i_ ol, t h e ftrst cas e of a P u n.)

RP _O RPH- P ropeller rotatt _ al speed. ' T I O N( IB f ) Prope ll e r _ rus _ I N IO- KH(HP) Rropell e t' shaf _ p . e _ .

3.2.10 M Helico pte r, P_ op e lle = and T Jlt _ Roto l, Notse Thts s ect ion d _ cl,tb _ _e s u b se t e_ th e & N i _ ISIN paPam e te _ used t o predtc t h _ 11c e l _ e _ , pl, opelle _ , a ndttlt- l, o to P n ots e b as e don the th e o re tic a l procedur e s deftned t n the l` efePence. T heset _ p u tS are neededtn addttt_ to the a ppropria te &GDATA par a m ete r sde = cl,tbed _ previously. (N ote: FoP£dBco r r _ cttohs, s ee sec t ion 3,2.1 on 11nt n g a tteriuetton ande e flftg ul, attoncorrection s , s ectton 3.2.1. )

3 0

i r ) rel i ab l e Unfts D e f a ul t P e t c _t p t4 on A1_1i m 2( q t Z) To _ al b_l a d _ a re a o f one s tal e o f r ot:er _ Sll N um be r o f bl a d e s pe r rol _r (2. _ B1L _ 6.)

CEE11 24.4 Const a nt(c) tA l oa dtn9 l aw Eq. 5 1 wh e n

and II

DELT1 _ .......... deg r ees 0 _ n _ le be _ wee _ g r os s t hrus t ve c to r a nd ho r tz o n. (ARplysonl y te t he ma _ n r o t o r .)_. _ D / 11 m(f _ ) Char a cte r isti c d| m nst o n fo r tile bl a d e geome t ry at 0. 7 sp a n, t .e., the mean axtal p ro_ ec t edch or d.

DTll m ( ft L t Jl_diame t e r.

I T YPE I TYPE = 11 f o r+ helicopte r no _ s e . Th t s var4able mus t b e spec ifi ed tfl t h e ftr _ l: case fo r ea c h nots e type for e achcon- f-t t ;u t_ l;ton.

ZRR11 0 [ndto _ to r f or sp e ct C y tng |f t he r oto r h _ dng coAs t de re d ts"t h e m a th r eto P o r _a tl r o t o r ) RR11 - O for _ t . q P e t o r _ 0 fo r t at. _ r ot o r (No t e: if the tat1 roto r is be + .ng const d e _ + the thr us t a_ ts ts a ssu m ed, h _ zo _l and p _ pe _ d4cul a rtO _ n _ heTtcop t e r sf l tg h t - + p a th.)

LLF11 2 L _ adt ng 1 _ _ n ¢ tca t_ r (see Asf _ i _ o r ++ LL F 11 . I ql _ pl _ tng _ o hovet'Ing _ 11co _ ,tef' ( Eq. 5 0 _ ).

,2 a pply i ng _ hel!cop _ e _ a n _ . t |l t • 3 app _ ytn9 tO low spee d , propelle rs • - (Eq : 50C ) .

4 apply _ r + 9, to. ._ l _, ,ed p r _op e lle r s .- (Eq , 50D).

qppl¥ t _ ¢ to m edt _ , sl _ee d p r op e ll er s .- (z¢ . sO _) .

o vse r inpu t s load _ ngl a w p _am e t e r s ( E _ ,, 5 1).

NENG 1 I_ er of et _ j _ nes,t .e,, roto r s. I f other t h _ I _ thtS m us t_ e _ pe¢t f 4ed f o r th e f_ t's t l l _ tse co _i_ nt o f e a ch f_ yp o f pro p ul s ten - ......

sy $ ¢en _ .- NTYPE I Number of fl ots e Typ _ st _ t _ _ on f_ g u r at ton.

(l _t e. ITTYPE mus t b e spec£f4edoAl y th the ftrsl _ _ lSI '_ data s e t o f eachco rf tgu ra- tt On f OP t h_ ft r s t case o f a r un.)

+ . . qll N-H ( ft -lbf) Shaft t orq u e.

RN11 0.8 Otn _ iistonless cent r otd f o _ eq u i va len t pot n t lo a d on a r o t o r bl a de.

RPH11 RPM Rotor rot a tional speed.

Sill 5.0 Lift cur v e slope for a stngle bl a de (appll e s _f L LFI|-2).

3 1 ' t i , r ; _ -- V s rtable Un _ t _ O e faul _ D e sc t tp _ te n T _ I N(l b f } ............ ThW u s t per roto r .

XHH I L 2,0 ] Cop _ta nts(m t - _ ¢) t n l oedtng l aw_ q . S l.

XL I_1 1 30,0 J App l te _ whenLLF l l-e.

i ' l ' I V a r ta b le Un tt Def a ult Desc r ip ti on N T YPE 1 N_ b e r of ,ot e e t _ p es tn a con f i g u rat ion, (No _ : N T YPE mu stBe s p e ¢tfted onl y t e t he f _r s t l _4m lSlN da ta let of e a chcon - ¢t gu r_tt en t'or the ¢trs _ case,) PS112 ( 1 ) d e g P e e s I e d e pende nt v e Ptable a rr a y of d _ rec tt vt t y • . . a n gl es use dt o ¢o _re l a_ et h e me a sured PSI i 2 i N) deg r ees SPL ' s. N " N P$|12 NOTE: S Pl. array _s t nput w_t h (8F10.0) form a t.d t t ' ectl y _ following 1;he _ i a ISIN d at a set.

SPI. _ I) d8 Dependent d at a a rr a y of SPL' s t n dB fop , ,, no i se ver s us (f, PSI12, E p12, BETA12), SPL i N i . d'B _ h e re f t¢ _t h e frequenc _ (etght pr ' efer v ' ed I / I oc t ave be .ds or _ en ty - _ o _ ' 1 / 3 oct a v e L _ ,d _ de f tned t n T a ble 4 of Ref , 1 . ) _ Inp uts ar e fo _ f r e e -field notse o o h dtttons at R- 1 m.

SPL(n) - F(I. O, K _ . L) whe _ _. . . _ ¢ + k_.(_ -I + ky _(. K - 1 + k3) ( L -1 } )) k1 • 24 fop 1 / 3 octa v e band a_ e _ ysts - 8 _ or full octave bendanal y s t _ k2 = NPSI12 k3 • NE P 12 !

I, J, K, L) e _ Pe ' Ln d t ce s corre s po _$ ng t o f. P S I 1 2, EP 1 2,Bl_TA12)wheP e frequ _ c y S vat ' ] _ l fiP st , t heh t he dtrec _ tvt _ a _ gl:e, t he f t _ engt,e per f o _ , _ e p _ r a- n _ e _ r, a nd fin a ll y _th e e ] ev at 'lon ang le ff a ppl i c a ble.

I'

l 3 4

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DD UNII'=SYS D A, SPAC _ -(CYI . ,(t,1)),OCB=(LR _ CL , ,136, // _ KSI ZE-5 4 4 -, RECFI _ FB)

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// G _ . FT12FO01 l C _ 1.

I /I G _ , F T1 .3FO0 1 DD UN X T-SYSDA, SPACE.(CYL ,( I _ I) I // GI _ , PT2OEO01 DD UN I T-SYSDA, sPACE-(CYL,(1,$).,DCB'LRECL"80, // BLKS¢ZE _ J _ O, RECF.H= _ B ) opt t_al n o rse dat e fo e notSe c o nt o u r esttn _g lon t _ desired(se e sec¢ton 2.O.& NLIJPT t, sect _ to _ 3.1._ // G _ , SYSIN OD DSN-&CAROS,DISP-( _ LD,DELETE) /* The ¢ o _l o wt n; co _ ol ¢ _ ds are neededen l y tf the opt i onal , no _ e d _ a has b e en written C o ftl e 20. J Th t s d a t _ ts r _ d as tnllut _ o th e p r ec _ mptler p r o - gra m whtch generat Q s a dac e su b Pout _ . n efor the e o, t b u e p r og _ m (s eQ_ ,tol_ I 4.0), T hts routt n e ts t:l _ il pun¢t _ d , pHnl:ed e,d ) ompt l e _ , s // EXEC _ RT'.GI,G _ TIHE' I , RE'GT _- TIOK // LKED. SYSIN DO * Deck pt , e-co m p tl et" {Bt.nar y Ph a , _ e . A e el. Z } / * , 0 ol O , ' T v ' r'S O, DZ S P '( D , D ZU T ,.

// G _ . Fr21 F O_1 Bo UNIT SYSDA,DSN &&TAPE21.I)¢SP (, OELETE), // SPACE-(4OO, (80,80)), DCB- (LREGI.-SO . BLKS Z Z ¢ -4OO _ F _ FB _ ....

// G _ . FT221_OOt D D UI _ =SYSDA.i) _ I-&&TAPE _ 2 _ DZ$ V '(N _ PAS$), // SPACE- ( 400, ( 80,80)) ,DGB- (i.RECL-IilO , BLKSI ZIZ=4OO,RECFH=FB) // I _ E¢ PGH.[ _ GE _ ER ( P _ lnches 1 9 _ -d m_ a _tSne fop th e Pe a l ¢tme c o , tou r pPogPsm) // SYSp,., L NT DD $X S( _ UT . ,,A // sYsz _ DO DU MM Y // S _ t SUT2 DD S _ St _ T " I _ ,DCB-(LRECI, " .gO,IJI.KS I Z E =4OO, RE ¢ .FH' _ P _ // S _ SUT1 DO U _ ].T,,$¥$DA,D$ _ = _ : r APE22,DZSP_'( _ D, PASS) // IEXE¢ PGH . IEBIENF . R (Ltst _ I _ I O f tl _ e d _ ¢a r outine) / P _ T S PR I NT DO SY_ ..-A // $YS I_ L DO DU _ Y

// SYSUT2 DO SYS# UT,A,I_C B - (LRECL - 80 , SLKS I ZE " 4OO,RECF _ e B)

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// F _ T_,SYS ; M DO DSI _ - & I ff APEg2,D ¢ $P-( C LD,OELETF-) _ / * [ the lest Job _ 1 _ pPoduc e sa b _ ry dare . subrouti n e fop the 360 vers t on of 1;h ec ent : our p f ogr e m.

3 7 5 AMP L _ C AS_ I _I LLU STRA T _ 5 O U T P UT OPTI O N 5 ( O U TPUT S HO WNIN 5 _ C TIO N _,_ , _o C _ 1.2 B U ZZSAW &_DA T A A LT RII.@ O0 ., AMACHq O , 292 , IG O R. I , Ili_ J T (1) . 1 ,2, 3 ,4,6,@, 1 01 U NIT- 1 , SL DI ST ( 1 )o I ,, ID OP. O &END 7 4 7 F L YOV E R T / O &N @I $ 1N N S TG4 @ -1, NB 4 6 (1). 41] ,FP R 4 B (1).I , 4 BB,OIA M4(1).7 ,f B,RSS4 _( 1) o 3 0n,, EL _ H _ l . P B ,EOttl a O . 27g, _ 145"3300 ., RT S 4 B "l ,_ 73 , ¢FP R 4"l . 2 g ,Dg LT45 _ O . , NEN G4 _ITY P _ .4, N T Y P E.Z_I DP4-| .I L AY 4 _ I,L IN4_ I, NT F4 a2 , 1MA 4 _ I, , TF4(! ) . 2 _O O ., T F 4 (SI ,4OO O. , P CT A 4 ( ll, @ O. , P C T A 4 ( Z I,BO . ,P L A 4 ( l lo 2 B._, ....

PLA4(2)18,5,F M 4= -O .4,C F 4,1116. &E ND &NOISIN [ TY PE . B ,E L C JE=I, g B ,EI_I B.O,ZTg, [ OPBoI ,I L AY B.I, LINB .I ,N TF5o2 , I H AB=I , TF 5 (I )° 2 000, , TF6 (8). 40 00. , P CT A5 ( L ).5 0 , ,P C T A5 ( 2 } o50,, P LAB( 1 ) = I 1 .4, PL AB (2 )= 13 . 4 , F M S _ O .4 , C F B= ll16 .,AREA 5 ( 1 )= 2 0. LEND C A SET W O & G OA T A I@U T ( 1 ). I _ 6' 0 L E N D ( bl an k c ar d) &N g I S I N I T Y PE = 4 ,NT YPE = 2 ,I HA4=O, PL A 4 ( 1) = O _ ,PLA4(2)=O ., LEND &NgIsINIT Y PEo5 , It _A S=O , PL A B ( 1) = O .,.P L A 5( 2 ) = O . LE N D CASE TH R EE &GDA T A I _U T(1) = 2, 6 * O &E N D

(b1 nk ard! o

& N_ I SIN IT Y PE = 4 ,N T Y PE2 ,1D P 4= 2 &E N D &N_ I SIN I T YPE _,ID P5 2 LEND C A SE F O UR &GDA T A Ip U T (1) = 3, 6 * OaEND (bl ank c ar d ) &N _ISI N I L A Y4 = 2 ,I T Y PE=4,NT Y PE = 2 L EN D &N_ISIN ILAY B = 2, I T YP E = 5 & EN D CASE F I VE &GDA TA I_U T(1) =4 ,6* O &E N D (bl . kcard! .

&N_ISINI T YP E4 _N T Y PE 2 =ID P4l oILAY 4=l j LG M 4 = I ,E L _H 4 =O., E O H4 0 . ,R1W 4 (1 ) =l. , R1W 4(2 )= l . 2 7 g t T L4 ( 1)=0. SB8 ,O. 858 ,= _L 4 2 LEN D &N_I$1 N =ITY PE - 5, 1 DPS = I ,IL A Y S = I , L QM S = I, ELO HS =_.,RIW 5 (I ) =I,, RI W B ( Z ) 1 . 27g , TLB ( 1) - O .858 _O. 858 ,NW LB = 2 ,ED H5 0 . LE N D CASE SIX &GDAT A I ¢ U T ( I)-5 , 6.0 &E ND (b l ank c ar d) &N_ ISI N IT Y PE = 4, N T YPE=2,ID P4 _ 2 LEN D &N_ I S I NITY PE = 5 ,IDP 5 = 2 L END CASE SEVEN & GD A T A I ¢ U T (_ )=7* O &ENb (b lan k car d) &N_ISIN I T YP E . 4 ,N T Y P E= 2, 1 L AY4= 2 _N D &N_ISIN ITY P E =B ,I L AYS= 2 &END i .

SAM PL e INPUT CAS e 2 - I LL USTRA TE S USEOF MU L TIP L E PRO P U L SION.SYST E MS WITH CONFIGURATION CORR E CTIONS {OUTPU T NOTSHOW I _) T H IS IS k M UL TIPLE C ON F I G UR / _ T I O N C F .S E N O . 1 &GDATASL ( IP E = O ., AL TP(_, 10., AL T_ G _ 6 . , i W_B S = 2 , S L D IS T (1 ) = S qO. , 60 0. ,N TE NG= 2 ,..............

IUNIT T = 1 , I EG A e = O ,IS p t P .M =O , i_d_R , l ,k_IA CH= . 1,I(a U T(I i [ =ii, 2 , 3 ,4 ,5 ,6_ 7 & END FIRSTCO_I G URATION--AUgmENT E R AN D P R O P & N ( _ I SIN NEN G= ! , I T Y PE = 6,C _4A 6 = I . 4, T _ 96=76 0 . , X N PR6 = 2. , DE L T635 . ,AD 6 = 5 . 32,DE6 = . 4,56 , NT Y PE 2 & (RD &N_ I ISIN IT Y PE I O , N E / CG %,TI - 0=63 0 0 . ,NlO=1300 . , R P MI 0 =79 0 .-_D LO= 15.97 , DS UBI 0= . _ SUBI 0 =56 ., B 1 0 " , 4., DELTI 0 = 0.&EN D S EC ( / fl D C (;N F I(_ U RA T I O N--P R @ P ON L Y & NQ I ISIN NTYP E= I, ITY PE = I O,N E N G=I , T l 0 = -1 88 . ,W I 0 =21 . 3, RPM I 0 = 172 0., O _ O =S. O , DSUBI O_ O . 1 .2 ., AJ S U B I 0=5 . 1 4, B _ O =4 . - , . D E J . TI 0=0 ., I C @ I _ I O = 2 ,.N PSCR = 5 , PSCR ( . 1 )= I0. jSO. , 90 . ,130. ,1 70., DPB(1 ) =12 '_ 10 ., 12 " 20 ., 12"25 . - _ 2"3 0. ,24 * 40 ., l 2 " 35 ., 1 2"3 0. , . 1 2"20 . , 1 2" I0. & _NO M ULT I PLE C _I F I GUR A T I_ N CA SE N O . 2 &GDATA SL _ PE = O . ,AL TP=I O .,A LT R_ 6 . , N_B S=2 ,S LD I ST ( I )=5 00. , 6 0 0 ., IU N I T =I, IEG A=Q ,IS PT RM= I , .] [I _ DR I, AMA C H= . I, I I _ UT(I ) = 1 , 2,3 , 4 , 5 , 6 , 7 &END SE Cg N D C AS E -- F IR ST CgN F I GU RA T I I _N &N_I SI NN E N G = I , IT Y PE-6 , GA M A 6 = I. 4,TT6 = 760 . , X N P R 6 = 2 ., D E L T 6 = 35 . ,A D 6 = 5 . 32 , DE6= . 458 , N T Y PE = 2 & E ND &N (] I SI N I T YP E =IO , NEN G=I , TIO=63 0 0 . , W 1 0= 130 0 ., = = RP_410_ 7 9 0. ,DlO=l 5 . 9 7 _DSUBI O = . B, A S UBIO= 5 6 . , B IO4. , DE L TI 00. &END SE CO N D CA SE -- SEC l_ l b C_IN F I (I U RAT _I_N -- &Nt_I S I NNTYPE=I ,I TYPE = 10,NE N G=I ,T 1 0=188 . ,W 1 0= 21 . 3, R Pi _I 0= 1720 ., D 1 0= 5 . 0 _DS UB1-O=O . 12 ,A SUBI 0 =,5. 14 ,B 1 0= 4 . ,OELT % 0 = 0 ., I C ¢ R1 0= 2 , PSCR(3) = I 1 0. ,OP B (1) = 40 . ., O PB(2 ) = 42 ., . .

D PB ( 3 ) =35 . ,DPB(4)=30 ., DPB(5) = 25 ., DP B (6)=2 I. , D PB(7)=I9 . ,D PB(8)=Io ., DPB ( 9 )_- = -2 0. ,DPB(IO)=20 . &E ND , l e 3O SAb LE-INPUT CASEFOR M E A S URED DATA C_l . 2 i CASENUMBER _ E &G DA TA I GDR=1 , ¢ I _ Fr( l )= ! ,2,3,4,5,6 , 7,EPp "l . _I SPTP . H= I &END CtINF 3 GURAT I_ N FI J I _ ME ASURED DA TAANDPRI J PECL E R NI _ IS£ &Nt D_SI NNENG=I , NTYPE=2, I TYPE=2 , NBTA12=2, NEP12=2, _ S112=5, E P12(I)=1.2 , E P12(2).=1.6, BETA.12(1)=15 , , 45. , PS Z 12 ( 1 ) =lO. , 40. , 90., 120. , 150. &END ) C _1 . 1 II 21 3 1 41 51 61 _ 71 _ 81. 82. 82, 83. 83, 82. 82. 82.

83. 83, e 3. 84. 84. 83, 83. 83.

84. 84. 84. aS. 85. 84. 84. 84.

85. 85, , 85. 86. 86. 8 5. 8 5 . 85.

8 _ . ' 84. 84. 85. 8 5. 84. . _ .. _ 84.

93. 93. 93. 94 . 94. _ 3. 93. 93.

94, 94. 94, 9 5 , . 95.- 94 _ 9 4 , 94.

95, 9 5 , 95, 96 , 96. 95. 95, 95, 96.-. 96, g6. 97, 97, 9 6, 96, 96.

95, 95, 95, 9 _ .. 9 _ . 95,- - 95, 9 5 , 8 1. 8 1. 8 1. 8 2. 82. 8 1. 8 1. 8 1.

8?, 8 Z, 8g , 83, . 83, B E. Be. 82.

83. . 83. 83. 84. 8 4. 83. 8 3 . . 83.

84. 8 4. 84. 85. 8 5. 84. 84. 84.

83. 83. 83. 84. 84. 83. 83. 83.

92. 92. 92, 93 , 93, g2. • 92, 92.

93, 93. 93, 9 4, 94, 93, 93, 93, 94, 94, 94, 9 5 , 95, 94, 94, 94.

95, 95, 95, 96, 96, 95, 95, 95, 94. S 4. 94. 9 5 . 9 5 . 94. 94. 94.

_ [S Z N ZTYPE=IO,Tt0=168. , H1 0 _ 1.3 _ RPKlO=1720., D 1 0=5.0, I _ UB 1 0=0,12, AS U6 1 0=5.14, B10 _ 4., DELTI _ --O. &END CASE NU_ R 1 _.

&GDATA EPI C 2.0, ALTP6=- . 500. _ SLDIST(1)= S gO., AHACH e. 1, _ .

SLI D P E = .2 & END ( t qank cat, , d) &I _ IS] ZL lTY P E=12 & END &N _ SIN [TYPE= I O &END *NOTE* i npu t above co rr esponds to 8 fui l - octave band l e ve _ s versus fi ve _ values of e dtrecttvt _ angl e , two . v a lues o f aa engine pe rT orm a ncepa r amez er , a nd two values o f a n elevation an.gle, i .e., SPL(n) - F( ], J , K, L) whe re n = I + 8 ( 0 - 1 + 5 (K - 1 + 2(L - 1))) and th e tndtces ( I , J , K , L) .

correspond frequenc y (f), dtrect t vt _ angie ( _ ), ellgtne oe r fo _ ance (EPP), and elev a t i on an gle ( /9 o) r espec ti vel y .

I' 4O • _ _ :,: :,..,:- 42 " | 43 . - --. __.i m_ ; 4S I i II I" I I I I _ _ II I ...... _ I I IU

t I

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I I I o 'o • _ e • e lo • • • • • e, • • • • • • • l_ . _ ' _ I I t I ! I 4 I I I I I I I I ! I t , e 4 _ 4,r _ ,Hv4 I t t t I I ; t_$| 1 I _ . + | II, I t ; | t _ .4 _ .4 $ I e e _ ,,; e o • 9 e+ e l • e o, . k - _ 4r 0 . + , , . + . t . .'r ., lp 4 P . , 1t ll_ (.. +s ,P,t $ OI I lie I t 0 / I t I i I i I I I I $ $ _ U.'U. _ V ,t I N -. | t $ I | I t I O t $ * - +t I | I | | O | | _ rl ,, , , , ,, , , , o,, , ,, , ,.,,,,, 4" 0 • • • • e 6 6 e 6 4. e • • * • • • I | $ | $ t | t /I tl ,rl I Ift UJ 4 • e-e e 4 p e • * • e le _ • • • 4 • • e _ -. ._ ** • • • • _ _ - _ r '_ ¢) >- + I i I I I ! ! ! ! o e I I i kt ! _ - $ ¢ t I ¢ $ ,H 1 .4,-4 _ ,.J bJ ..j,J I ,.4 0 Z t t -'_; C I _I, U _1 . tu i-- - t_ C) Z Z : O:Z g_ ,.J bJ t o ) t _ : Z ; Z _ * • • 4 4 • • e • 4 • • 4 • 4 • e e _ * • e • • o • _ i • _ • • 4. " _ o P' _ .''.=l _' II _ l = q C ' ¢ G II_ o:: 2" ... J ., = I UJ , . , , .

+ + , _i t ,_ 4_ , ' 3 ('% 1 t ,_ 0'_ 1, 1% _ 4 , t ' P r . , ._ I , ,' ) 0 '+ , _,,,.J t '_J I_ 0" , t / _ , , . _II_ + + + ¢. + L, _ _ =L;_

5 4

t i | 5 5 5 6 I I II I .

i I I _ : 611 I , 6 1 I r 34 Hac htno R e qui r e me n ts T Ms progr am Is dc s tgned t o ope _a_ o _t he _M Sy ste m 360 o r 370. App ro xi mat el y P 3 0 K de ct m_l b y te s are r e bu t t ed for o p er a t io n , D a ta tn p ut is t h ro u g h c a rd s , ta pe or d ls c c o r d I m a g _r e _ o r d s. Ou t p ut Is t _ e ltne prin te r .

Should the ept ton a l fi le o t no i se data v e rsus a peo s=_ lb o d o n gtn e p e r- f or man ce par a n m ter, el e v t = tton. an fll e a nd log10 o f t h e r a ng e at CPAbe d e s i r ed, f t les (TAPE20, TAPE21) m us¢b e av aila b le as scratch files an d f t le (TAPE22)wh tth co n t atns th e data s ubrout i n e is used f o r c a r d uu t put.

3.5 O peratin g System Th _ p rogramh a s been chockedou t u nd e r t he HV T o pe r at t _ lg sys t e m o n t he IBH370- 1 55H a nd the TSS s y s t em o n th e IBH 360 / 67.

3.6 ResourceEsti m a t es The cent ra l processor (CP) tim e r equt _ ed ttp r o c e ss a - J ob d e pends upo n w h | ch progr am options a r e used, The m aj or f a ctor s t x t t luetl ct ng t he t im e p e p case are : I. The num be rof no i se compone nt stnc _ ud _ d 4fl ¢hb de sc rip t ion oF the notse sour e r.

2. 1 / I or 1 / 3 octave b a nd _ Fo r pred i cted netse sp e c t ra (th e 1 / 3 _cta ve band op t ion use s approxi m a t e l y t w i ce a s muchCP tl m e).

3. Humber of s td el tne obse r ver post t fo.s.

4 . L i n in g a tt enua t i o n _ nd configur a tion co rr e c t ions.

5, Op ti on a l output r eport s .

Severa l Pun s we r e madedu r ing t he fi na l checkout st a ge s 0¢ the p r ogr am , The f ollowing t i mes are aver a ge es tim a t es o f t he CP t i m e pet ' n o i se co m pohe nt f o r a stngle stdeli n e po s itio n wtt h n o l _ntn g at t enu a ti e rl or col _f tgurat t on co t' f ac t ions 0 but wt th a 11 t he op tt onal r epor ts W r t tt e h .

Noise Type CP T t i_e - S e e .

o a t 8.o cor e a nd Tu r b i ne 7.0 I n l e t F _ , 4 .5 , A f t F a n 4.5 A u g men tot' W tng 5.0 BlownFlap 6.0 L tft Fan 5 . 0 : . Ejector-Suppre s so r 5.0 , _ - PPop e 1 lop 7.0 • He1 t copter 7. 0 it i Lint n g a tte n u a tion and con f ig u r a tio n co _ ' rectt ons add appt`o::tm a tel y 10 _ t o these f ig u r e s.

6 2 4 , 0 NO I S EC O NT O UR C O MPUTER PR OG RAM5 T w o For tra n I V prog rams a re p r ov i ded t o co m putenoi se c o n t our s b ase d o, the p r oc ed u r es d efi ned tn s e c t ton 5 ,3 o f Re fe r en ce 1: a n I BM360 ve rs ion fo r " b at ch '_ p r oc es sing a nd a SZGH A V II ve r s _ o, for "r e a l time " p r o- c esstn g wtt h the NASA-A m e s f l i gh t s imulato r , T h e co m put a t i o n p r o c edu re s f _ the two p r og ra msare t he sam e- o nl y the Input - output co ntr ols dif f er.

Th e SI G MA VI I ve rs ion has been w r t tt e n t o co n fo m t o the f ltght si m ulat o r r eq u t r e m e rd; s and ts us e d b y m e ansof a sub r ou ti ne c _ 11. Duri n g t h e tn tt taltzatton stage o f the fltg h t s _ mul a to r , t he pro g ram nee d s no i npu t o ther than th e _ o ust tc d a i a r o _ t t ne gene ra t e d by th e noise p rediction c_ lp u t _ p r og ram o r an e q u i va len t set o f d ata. I n t hts st a ge, t a bles f o c .

• the a cou _ ttc d _ t a f unct i on s a r e gene rat e o in t he core o f t he S I G MA VI!

c _ l)ut e P, D u rtng th e flt _ t si mu l at ion stage , t np; t to a rid output f r o m the p _ og r am _ b y a 11 s t of ar g _e rtCs tn th e sub r ou t i n e ca ll . Prtn t tng o r plot t lng ef I np u¢ I o u t pu¢ v ar l a b1 _s Is h an dled b y the c a lling p regram .

T h e I B M 38 0 re' s ta rt h a s been w Pt tte n to func t ¢on t n a s _ e n d - a le n e n _ l.e r . Th e a - ous t tc data tS inpu t t n the same m_ fle r a_ the S IGM AV I I ve _ st _n vt a e dat a r outine. Addition a l tnput va r iables for Initi a l i zing a nd de fin ing a e r o / propuls J o n p aram e t ers during a n ai r cr aft' s f l i gh t a r _ speci f i e d on Qa rds. The output from t he prog ram ts a pri nte d lts t tng o f t h e r _ sult S a .d op t io na l ma g net tc tape(s) f o r CALC f IPplo tt ing. Sa m pl e c as es are gt v e n t n se ;t tons 4.7 a nd 4.8, 4.1 Us age o f t h e S IGMA VII No i s e Co nt ou r P r og ra m Th e u3e of the pro g r am ts madeb y a sub r ou t i n e ca l l a s shownbelo w .

The e co ust tc dat e rout i ne ge n er at ed b y t he no i se source c o m p ute r pro gram oP tts e qa|v a_ t must b e inc l u ded a s p a r t o f th e co nt ou r p r ogra m du rt ng co m ptl at toh a n d loadtng t nt _ the S I G MAVII sy st_ , . For best resu lt s these d _ t _ should co r re s p o nd to t h e condi t ions outltned tn T a bl e 11 o f r e f er en ce I.

CALLVALUES( If _ DE,NL S ,NLF ,XF,YF , Z,5 C I , DE,EPP, S D,X 1 ,X2,Y 1 ,Y2, S U M , S LNL,IEC) 6 4 r | i lll l q , , I I N il I i l * d 4.2 US AGE OF TIl E ti l l 3 60 NO I SF ( _ O N I'OI. IR P R ( J( i RA M Til e deck, ta cklnp l md ructions fa r u_ ingth e I B N 3 0 0 .ol w to . tou r p r o g r am a l e l ist e d below , T he a ¢ ou _ li ¢ d ata roull, e 8_ n e r a t ¢ db y t he noi se_ o ur_ ¢ com pl e t e r pr o gram*s po _t pr 0coisor (Ko ¢ , '_) o r t¢s 0qutvale n t must bo t c ¢ludod a4 p ar t of t he contour _JOL_ .n _ 11a ¢ t u n a nd 1o a dl n g-. t n = . , .ths , .IB M ..36 0 . s _ / stem.

4 , _ . | i n l t i a llz a tien P a r a m e t e r s Card No, I Norm a lly th e f ir s t 3 ¢ oltm ln so f this c ard a r eb l a nk; th e re maind erma y b¢ u s e d _ r c omm e nt , How e v e r. I f the use r wi shes to c h ec k hiso u t put h c l o r e U si n_t il e ( ' A LC( L glP p l o t te r, h es ho u ld r u n Iri s ,j ob w i th til e p rogram opt i o n iI _ L q lT = -I , T h i s op t i o n di re ct s th e p r oB r a mt o s av e t he o u tput on u d ata t a pe, file TA P E 2, to b e use dl ate r in pr eparing a pl _t t ape , T he user ma y ttt en ch e c k ltt s p rlnt ot_ t a n d r ¢ s ubn lit t he job t o tile IB M 3hOwit h a " . 1 " pu n c he d _ ncol u m ns 2 a nd 3 o f t h i s _ ard. Tit= o n ly ad d itional i n p u t n ee d e d wilt b e t he t h r e e c ards (No, A , B, a nd C) d efi ning th e plotttn _ options ( s ee 48).

If IJtefirst 3 c ol um ns el " ¢ ar _ No _ 1 a re bl a nk , th e follow ing N a m e lt s t ,. _ DI GIN T p a r ame t e r s a r e r e quir e d f o r i n it i alizatio n o f the pro g ramvariables,Ti le . sa m e pro c edure t br F or t ran N ame l i st as s p ecifie d i n s e i = tlorl 3.0 _ tl_ b e gs e d exc e pt t h e N am e lls t name ts a &IZLLH NT J n Ste a d of &GDATA or & N ¢ ,IS Z R, _ Vari a bl e Un i t s D e fault De scription Name Va lu e N L ..... 5 Th e m ax i m um num b e r o f nois e co n to u rsto b e ca l cul a tedFor e a ch f li gh t p a t h, RE _ 1 ' RI C TIO N: I -< NL < 5, A NIdl) EPNdB(PNdB) 85 T A _ a _ d. _ Ie.v e .ls a p plying to e a ch conto u r.

A N L(2) " " 90 , _ k( 3 ) " " 9S ANL(4) " " lO0 ANLLS) EP N d B (PNdB ) 105 IU N IT 0 S[_e cifl0 s th e units t'or d i s t a nc e Input a n d output I UNl l' = 0 f o r MKS u nit s = I lor En g h s h un i t s .

I P N D B 0 Spec i fi es t he traits fo r n o i' ; _ l e vel s t.put a nd o u tput I P NDB = 0 t'L , r EPNdB = 1 lbr P N dB.

i .

J) o V.a _ a _ e Un _ s Default . . D o s c rii _ i .0 _.

i :., Na _ ae Vai _ _ :: _ IPL O T _ 0 _ p c d _c s i g t a pes a re _ t ob e-pre pared f or !i , . C A LCO M P I _l_ tt in s - : IP LOT = - ] , fo r.pt¢ _a r .i ng co nt ou r : po tm. d _ a ,a p e = 0 t b= _int o u : o _ l.y .

= 1 for p r . ep a t i n _ c o mplete • ) # or t ap e ...............

4 . 2 . 2 A ero / P r op u l s ima Pa r am eters IL t h_ fi r s t , t c o kmm s o f c ard .No , t-arc Maak , . t li e . follawin g. v _¢ of d a ta .car d s a r e requ k ex t im m e d i 'o a_ t y a f ter-t h_ N a me li st & D IGIN T p a r ame ters. For m u l ti ple fl ig ht pa ti o s , •'- t h i s d a t a se t i s t o h e ._te ,.peat efl . • i': I ) T i t l e Carol F.o_ma$ ( I_A_ i ; ):: . V a tr ial_ t Name. D es c_fi ot $.

IIT L E , T i ll e ca ret f or . e a c h , f ligk t pa th c as e ., NOTE: Tl_ e r a axi m l r a L _ fn _ f of ¢ I m : a e ter s is 7 2 .

Aft e r t 41 etit r e card , t he J'o_ l 'ow i aa$ N amc l is t & D I GS hM p af a me /d s are t o b e spfciHed . T L _ saf n e p r . o c edu r e f o r-t : ortra n N a t r iells t a s s ho¢_ta ia de o_ 3 . 0 J. S t ;o b e us e d e x c ep t t _ e- .N a me li sg n ame is-&DIG _ i n s t_ a _ o f" &G DA T A .

i .

Va ¢iable Un i t s D c t _ lt- Dtsc ri _ io n N a m e Vahte |' DS C I d _ g i'c_ s 110 Dit ect i v it y a ag i e f or max imu m p a s sb y noi se .

: S O ( 1) m ( f r) 1 . 0 _i d eli n ¢ d is ta _e U i n f i g u re' 77 t n Rt _ f. 1 " " s b ( 2 ) th tft ) | 5 . ' 2 .4 pass b_ no i se e s ti mat e .

S O (3) m(f t ) 46 3 .3 I_ L _ TRI CT I ON: I _<SD - < 1 0 000 .

NSL 3 N umb er o t s i d e l i ne dis t anc e va l ues .

RE S T . R W ' r t r3 _. I < _gt.< . , U . ......... , ,= \ If t he us_ , d oe s not _ish t o ha ve a ll fN L ) c o n to u r s spe c if ie d in s ect ion / 4 . _ .1 e alo u2 a ' 6 e d r e ( t h i s q i g h t pa t lL he i s a_l e t o sp ec ify the su b se t of t h e ANL a rr ay to be us ed : 6 7 e V a _ W L bI _ D _ a _t , _ D e s c_ tion Name. Valu e ¢ NI _ |. . Indi _e_ d e n ot i n g -.t h e n oi s e. I % ,v e is fo _the NLF ..... N L first a _ d l a s t n oi se c o nt o u_ to . b e ca l c u lat e d f o r. t his f l ig ht _t_ T-he. v .a z _ bi et (NLS ,N L F) ac t. a s po in te r s i nt h e. A _N S a rr a_ , s_e_ff i ed in _ec tio n 4, .2. 1 .

R E S TRI CT .ION: 1 < NLS - _ NLF _ - N L_ _' EXAMRLE: Sui _ os e t he . valu es t' _ r ANL ar e 80 _ 90;1 -00; i I , _ d.th N_.= 4 , a s r d . w _ w a n_ on l y t he . 90- , . _ 00 EPI_R co ntour s for thi s fli ght I m , t h . The n th e valae _ s to b e sp e cifi e d for NLS anti NLF a _e N L S _2 , NL F = 3 . " _ T he pr c qFa t _ _ t mi _ .t h e. me t.te. s t _ c , i f y th e ae t o/ pr . o pulsio n - p araar et e n in t w . o v v _ ) _ s , T l_e fi _ St me th od -l e t s she us e r.d e fin e-t tt e p amm_ = s i _ a . ta be d_ _t 'io _ f o r m anc _ t he in cre m _ rtt at . whic h nt _ 4. _e le v e l, a r e m . b e . _ ozn _ tt e d, T h e s eco x td ' te . ts th e us e r de . t i x _e -theziisc fe r e -p o t n t s .

al o ng th _ t 3_ ht _ w he re _d ,n _ p o llZtsar e: re.b e cakz fl at e d.

.. Varia ble --_._ U n its Def au l t D esc fi _. __ • Na C ne _ C al ue- : NFPP 2 5 N m nb e t ¢ f po _n ts a lo n g th e t i i gl at t ra c k w h e t _ nois e cont our p o i n ts a te to b e cal c ulat e d, ) ' I _E_ ;T R I CT I O N: 2 _ NFPP _ _ 100.

DS _t (f O St e l _ s i z e al o ng _ ght l'r . ac k t ot c em pmi n g ¢ o x tt o u t p oi n ts, L e . , distan c e b e t wee n fli g h t i l_ a t a t Lm ittts(Xi. Y i ) a n d (X l . l , Y_l ) - S ho w n : ia _ ; _7 . th es e c oordin a t e s are o_ ta ine d ) by lin e ar int e rpolatiot _ o n th e pr esc fil _e d t ' tig h_ t, p s t _ . .

' ND NitmB e f o f p oin ts defi n ing t h e fli gh t pafi z.

: R E$ ' I ' RI C i ' rON : 2 - _ ND _ 2 0. .

bl__.__ . .._ (,ft) Art_ of X c _ llnet e s (ft g_ Jre 77 tn _ f ,1 ) fo e : fl ight p a t h .

,,¢ ¢,¢ DDX(ND ) m If ' t) DI} Y (I) n )_ . ) t ) Al r ayo l'Y ce , ,,e c !il,a t e_ (f ' _ g "l , _ 7 _ 't h R _ . ]) for ' . , 1 ,g _ , ) V_ : :. . , ' or r c , : o:ldi) . _ t o D A #'_ vt, l t _e s.

t # 1 .

t _ - D V a r . iabl¢ O n R s I _ a l _ _es o _ l p_o , : / . N a me .- Va l ue • i_ D D ZOL m (ft' ) . Ar ra y ofZ ceord i n e. t .e, (f, i g u r _ 7 7 t _ R e_ . 1 ' for :: , ... . flt g t R- p at h_ ¢ o _ r e sl_ndi n g tO D DX , DDY _ , _ g _ Z (ND ) m ( ft) val u es .

:: DD D_ _ d _ t ce s .... Arr _ of e a g qn e attitu d e - an gl es . M r 1. !_.. de fi n e d l;_ O s it i o ns al o ng fli g h t p a th .

;_' DD DE (N D _ ..- ..... d e gr ee s _ 7 | IXl_P R _ l }. Array o f -e t tg i , e pe _ o _ p a x a t ml; e xm f o r : , d cfiac f t p os i t i o ns a l on g f l i g ht , p _l_.

. MC.t hod-2.

_ N_ " " l g um_ r. Of - laOia t s . altmfft l_ _¢ k : " | Whe _ -noi _ _ n t o u r po ga t s ar e to B_ ' -, RES T t_ I CT 1U N: 2 __N FP P _ 7 0 0 .

_ n Xtl) m ( fO A r m y o _ X c oord i n a t es ( fig u r e 77 t_ l _f ., "l fo p : • ..... fl i$l_ t,p a t h .

I_ O X_N F ..J___ _ frO- l ' P i ' _I ) m tit ) A tt a v ol : Y ¢ oo gdina t es ( f igu r _ 77. _ tl Ref. _ f OP : ....... _t#_ t path_ D Y.( N F P P ) r n ( ft ) .. D_(1) m (ft ) Arr ay of g _or d i rt a te s ( fi gu r e 77 *n ge e . 1 ¢ 0e It ......

OZ ( b_P P ) m (f O DDE(I _ d eg r e es Al , r ac t o 1' e ngi n e a t . t i t ud e angi : s f or poin t s ......... at ofl _ f t lsh t p a t h .

DDP. g NJ_P ) d eg r ees I)EPR( t ) A r r a y of e hgi ne pex_o z _m ce p a r a m e tez . s , _': DI_PR(NFI * P) points alon g f lig h t pat h .

I STOP O An indicat o r t o d e n o t e i f t his is t he l as t fl i g I lt p a t h t o be c o nsi d e red.

) IS TO P = 0 d en ot es t o do a _ ot h e r cas e If _ I _! t 'l i , _' , TM | i':l| tiff< i, " T i t : last c ase .

l r

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I I ' | i : i: 4 .7 CON T RO L C AR D_ // J O B 2 ¢_ ' _ _. pe _bts t _la t i on . ) // E X EC L_;M ---= L EB G E N_R : // _ .Y . qPRIN,T. DD S Y S _ UT. = & - .

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