APPENDIX A. INSTRUMENTATION
APPENDIX A. INSTRUMENTATION * Table A 1 . Approximate accelerometer locations (inches) .
NODE X Y Z NOTE 0 0 0 266 Bifilar 1 0 0 274 Instrumentation hat 2 0 0 189 Balance base 3 0 50 147 Right strut tip 4 – 155 26 179 Right frame front end 5 – 155 – 26 179 Left frame front end 6 0 – 50 147 Left strut tip 7 149 26 179 Left frame aft end 8 74 26 179 Right frame mid aft 9 249 0 179 Tail strut tip 10 0 50 0 Right strut base 11 0 – 50 0 Left strut base 12 74 – 26 179 Left frame mid aft 13 149 – 26 179 Right frame aft end 14 238 0 0 Tail strut base 15 – 74 26 179 Right frame mid front 16 – 74 – 26 179 Left frame mid front 17 0 0 229 Mid shaft 18 0 26 179 Right frame mid 19 0 – 26 179 Left frame mid 20 0 0 291 Vertical shake plate * x and y locations are referenced to the hub centerline. z locations are referenced to the base of the struts.
Coordinate system is shown in green in F igure A1. Hub center is at (x, y, z) = (0, 0, 258.7) inches.
20$
1$
8$ 9$
13$
0$ 17$
2$
18$
3$
4$
15$
7$ 12$
19$
16$
6$
14$
z$
x$ 10$
y$ 5$
Fwd $End$ A($End$ 11$
Figure A 1 . Accelerometer locations and directions. Note that nodes 18 and 19 were not instrumented.
* Table A 2 . Run - by - run accelerometer locations and directions .
Run;7;8;VT270 Run;8;8;VT315 Run;9;8;IP270A10 Run;10;8;IP270NVP Run;11;8;IP000NVP Run;6;8;VT000 Run;1;8;IP000 Run;2;8;IP270 Run;3;8;IP315 Run;4;8;IP50 Run;5;8;VTC Accel;ID Node Direction Node Direction Node Direction Node Direction Node Direction Node Direction Node Direction Node Direction Node Direction Node Direction Node Direction acc1 0 180 0 90 0 135 0 230 20 down 20 down 20 down 20 down 0 90 0 90 0 180 acc2 1 180 1 90 1 135 1 230 1 226 1 226 1 226 1 226 1 90 1 90 1 180 acc3 1 270 1 180 1 225 1 320 1 316 1 316 1 316 1 316 1 180 1 180 1 270 acc4 1 up 1 up 1 up 1 up 1 up 1 up 1 up 1 up 1 up 1 up 1 up acc5 2 0 2 0 2 0 2 0 2 0 2 0 2 0 2 0 2 0 2 0 2 0 acc6 2 270 2 270 2 270 2 270 2 270 2 270 2 270 2 270 2 270 2 270 2 270 acc7 2 up 2 up 2 up 2 up 2 up 2 up 2 up 2 up 2 up 2 up 2 up acc8 3 0 3 0 3 0 3 0 3 0 3 0 3 0 3 0 3 0 3 0 3 0 acc9 3 90 3 90 3 90 3 90 3 90 3 90 3 90 3 90 3 90 3 90 3 90 acc10 20 0 20 270 20 315 20 50 20 46 20 46 20 46 20 46 20 270 11 11 11 11 acc11 4 0 4 0 4 0 4 0 4 0 4 0 4 0 4 0 4 0 4 0 4 0 acc12 4 90 4 90 4 90 4 90 4 90 4 90 4 90 4 90 4 90 4 90 4 90 acc13 4 up 4 up 4 up 4 up 4 up 4 up 4 up 4 up 4 up 4 up 4 up acc14 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 5 0 acc15 5 90 5 90 5 90 5 90 5 90 5 90 5 90 5 90 5 90 5 90 5 90 acc16 5 up 5 up 5 up 5 up 5 up 5 up 5 up 5 up 5 up 5 up 5 up acc17 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 6 0 acc18 6 90 6 90 6 90 6 90 6 90 6 90 6 90 6 90 6 90 6 90 6 90 acc19 20 270 20 180 20 225 20 320 20 316 20 316 20 316 20 316 20 180 11 11 11 11 acc20 7 0 7 0 7 0 7 0 7 0 7 0 7 0 7 0 7 0 7 0 7 0 acc21 7 90 7 90 7 90 7 90 7 90 7 90 7 90 7 90 7 90 7 90 7 90 acc22 7 up 7 up 7 up 7 up 7 up 7 up 7 up 7 up 7 up 7 up 7 up acc23 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 8 0 acc24 8 90 8 90 8 90 8 90 8 90 8 90 8 90 8 90 8 90 8 90 8 90 acc25 8 up 8 up 8 up 8 up 8 up 8 up 88 88 88 88 8 up 8 up 8 up acc26 9 0 9 0 9 0 9 0 9 0 9 0 9 0 9 0 9 0 9 0 9 0 acc27 9 90 9 90 9 90 9 90 88 88 9 90 9 90 9 90 9 90 9 90 9 90 acc28 9 up 9 up 9 up 9 up 9 up 9 up 9 up 9 up 9 up 9 up 9 up acc29 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 acc30 10 90 10 90 10 90 10 90 10 90 10 90 10 90 10 90 10 90 10 90 10 90 acc31 11 0 11 0 11 0 11 0 11 0 11 0 11 0 11 0 11 0 11 0 11 0 acc32 11 270 11 270 11 270 11 270 11 270 11 270 11 270 11 270 11 270 11 270 11 270 acc33 12 0 12 0 12 0 12 0 12 0 12 0 12 0 12 0 12 0 12 0 12 0 acc34 12 90 12 90 12 90 12 90 12 90 12 90 12 90 12 90 12 90 12 90 12 90 acc35 12 up 12 up 12 up 12 up 12 up 12 up 12 up 12 up 12 up 12 up 12 up acc36 13 0 13 0 13 0 13 0 13 0 13 0 13 0 13 0 13 0 13 0 13 0 acc37 13 90 13 90 13 90 13 90 13 90 13 90 13 90 13 90 13 90 13 90 13 90 acc38 13 up 13 up 13 up 13 up 13 up 13 up 13 up 13 up 13 up 13 up 13 up acc39 14 0 14 0 14 0 14 0 14 0 14 0 14 0 14 0 14 0 14 0 14 0 acc40 14 90 14 90 14 90 14 90 14 90 14 90 14 90 14 90 14 90 14 90 14 90 acc41 15 0 15 0 15 0 15 0 15 0 15 0 15 0 15 0 15 0 15 0 15 0 acc42 15 90 15 90 15 90 15 90 15 90 15 90 15 90 15 90 15 90 15 90 15 90 acc43 15 up 15 up 15 up 15 up 15 up 15 up 15 up 15 up 15 up 15 up 15 up acc44 16 0 16 0 16 0 16 0 16 0 16 0 16 0 16 0 16 0 16 0 16 0 acc45 16 90 16 90 16 90 16 90 16 90 16 90 16 90 16 90 16 90 16 90 16 90 acc46 16 up 16 up 16 up 16 up 16 up 16 up 16 up 16 up 16 up 16 up 16 up acc47 17 90 17 90 17 90 17 90 17 90 17 90 17 90 17 90 17 90 17 90 17 90 * Entries in bold indicate the accelerometer was either moved or ro tated from run to run. A ‘ -- ' means the accelerometer was not connected or had a dead response.
Table A 3 . Run list and instrumentation settings .
Hub Excitation Excitation Run Description Azimuth Signal Type Frequency Amplitude Window (deg) (Hz) (lb) IP000 – 49.2 Burst Random 0 – 80 800 None IP000 - 200 – 49.2 Burst Random 0 – 80 600 None IP270 – 139.9 Thump Random 0 – 80 Undocumented Undocumented IP270 - 200 – 139.9 Thump Random 0 – 80 Undocumented Undocumented IP315 – 95.1 Thump Random 0 – 80 400 Hanning Broad IP315 - 200 – 95.1 Thump Random 0 – 80 800 Hanning Broad IP50 0 Thump Random 0 – 80 600 Hanning Broad IP50 - 200 0 Thump Random 0 – 80 400 Hanning Broad VTC – 4.31 Pseudo - random 0 – 100 Undocumented Hanning Broad VTC - 200 – 4.31 Pseudo - random 0 – 100 Undocumented Hanning Broad VT000 – 4.31 Pseudo - random 0 – 100 Undocumented Hanning Broad VT000 - 200 – 4.31 Pseudo - random 0 – 100 Undocumented Hanning Broad VT270 – 4.31 Pseudo - random 0 – 100 Undocumented Undocumented VT270 - 200 – 4.31 Pseudo - random 0 – 100 Undocumented Undocumented VT315 – 4.31 Pseudo - random 0 – 100 Undocumented Undocumented VT315 - 200 – 4.31 Pseudo - random 0 – 100 Undocumented Undocumented 9 IP270 - A10 – 139.7 Pseudo - random 0 – 100 400 Hanning Broad 10 IP270NVP – 139.7 Pseudo - random 0 – 100 400 Hanning Broad 11 IP000NVP – 49.2 Pseudo - random 0 – 100 Undocumented Undocumented 1.
IP is in - plane; VT is vertical shaking. Number indicates azimuth of shaker location. Input load is positive in tension (i.e., towards the reaction mass).
2.
– 200 indicates additional 200 lb of weight present on the shake plate.
3.
VTC is vertical shaking on center.
4.
– A10 indicates shaking at an alpha of – 10 deg.
5.
NVP indicates vertical shake plate not present.
Table A 4 . Vertical shake plate rap test hammer and accelerometer directions .
Point Rap Azimuth (deg) Accel Direction (deg) 1 180 0 2 270 270 3 225 0 4 225 270 5 Vertical* Up * Vertical hammer strike on top of the vertical shake plate near the center.
Shaft Bending Gauge Equations Bending gauge moments: MRSEBL Shaft extender bending, primary (in - lb) MRSEBLB Shaft extender bending, backup (in - lb) MRSBM Lower shaft bending, primary (in - lb) MRSBMB Lower shaft bending, primary (in - lb) Rotating fo rces and moments: 0 . 96 !"#$! − !"#$%&%'() 9° − !"#$%&'() ( 9° ) !"#$ 1 = 13 . 716 !"#$%&%'() 9° − !"#$%&'() 9° − 0 . 96 !"#$!$ !"#$ 2 = 13 . 716 1 . 889 !"#$%&%'() 9° − !"#$%&'() 9° − 0 . 726 !"#$!$ !"#$ 1 = 13 . 716 1 . 889 ( !"#$%&%'() 9° + !"#$%&'() 9° − 0 . 726 !"#$!
!"#$ 2 = 13 . 716 Fixed - system forces and moments in hub axes: !"#$% ! !"#$% ! !" = !"#$ 1 cos !" − 5 . 2° − !"#$ 2sin ! ( !" − 5 . 2° ) !"#$ ! !"#$% ! !" = !"#$ 1 sin !" − 5 . 2° + !"#$ 2cos ! ( !" − 5 . 2° ) !"#$ ℎ !"# ! !"#$%& ! !" − !" = !"#$ 1 sin !" − 5 . 2° + !"#$ 2cos ! ( !" − 5 . 2° ) !"##$%& ! !"#$%& ! !" − !" = − !"#$ 1 cos !" − 5 . 2° + !"#$ 2sin ! ( !" − 5 . 2° ) AZ is the hub azimuth, given in Table A 3 .
APPENDIX B. ACCELERO METER AND NASTRAN MO DE SHAPES
APPENDIX B. ACCELERO METER AND NASTRAN MO DE SHAPES (a) Accelerometer data (scale 2 × 10 ) — 1.7 Hz (b) NASTRAN prediction — 2.4 Hz Figure B 1 . Comparison of accelerometer data and NASTRAN model — Mode 1.
(a) Accelerometer data (scale 10 ) — 2.3 Hz (b) NASTRAN prediction — 2.4 Hz Figure B 2 . Comparison of accelerometer data and NASTRAN model — Mode 2.
(a) Accelerometer data (scale 10 ) — 9.3 Hz (b) NASTRAN prediction — 13.4 Hz Figure B 3 . Comparison of accelerometer data and NASTRAN model — Mode 4.
(a) Accelerometer data (scale 10 ) — 15.9 Hz (b) NASTRAN predic tion — 26.1 Hz Figure B 4 . Comparison of accelerometer data and NASTRAN model — Mode 5.