NASA — National Aeronautics and Space Administration
Official documents, republished as free chaptered HTML editions with linked tables of contents.
2,169 documents · 1 type
Technical Reports
- [Tail Plane Icing]The Aviation Safety Program initiated by NASA in 1997 has put greater emphasis in safety related research activities. Ice-contaminated-tailplane stall (ICTS) has been identified by the NASA Lewis Icing Technology Branch as an important activity for aircraft safety related research. The ICTS…19990026834
- 367-80 airplane variable stability simulation system /NASA Langley supersonic transport simulation program/Four-engine jet aircraft used as in-flight simulator for variable stability testing of supersonic aircraftNASA-CR-66126
- 9- by 15-Foot Low Speed Wind Tunnel Acoustic Improvements Expanded OverviewThe 9- by 15-Foot Low Speed Wind Tunnel (9x15 LSWT) at NASA Glenn Research Center was built in 1969 in the return leg of the 8- by 6-Foot Supersonic Wind Tunnel (8x6 SWT). The 8x6 SWT was completed in 1949 and acoustically treated to mitigate community noise issues in 1950. This treatment included…GRC-E-DAA-TN31946
- 9- by 15-Foot Low-Speed Wind Tunnel Commissioning Test Using Advanced Ducted PropulsorA subscale model of an aircraft engine fan was tested in the 9- by 15-Foot Low-Speed Wind Tunnel at the NASA Glenn Research Center in 2022. The fan model was the Advanced Ducted Propulsor Fan 1 designed by Pratt & Whitney in the 1990s. It has been part of multiple wind tunnel test campaigns over…NASA/TM-20250004035
- 9x15 Low Speed Wind Tunnel Acoustic ImprovementsThe 9- by 15-Foot Low Speed Wind Tunnel (9x15 LSWT) at NASA Glenn Research Center was built in 1969 in the return leg of the 8- by 6-Foot Supersonic Wind Tunnel (8x6 SWT). The 8x6 SWT was completed in 1949 and acoustically treated to mitigate community noise issues in 1950. This treatment included…GRC-E-DAA-TN31484
- 9x15 Low Speed Wind Tunnel Improvement Update and PlansThe 9- by 15-Foot Low Speed Wind Tunnel (9x15 LSWT) at NASA Glenn Research Center was built in 1969 in the return leg of the 8- by 6-Foot Supersonic Wind Tunnel (8x6 SWT). The 8x6 SWT was completed in 1949 and acoustically treated to mitigate community noise issues in 1950. This treatment included…GRC-E-DAA-TN67410
- 9x15 Low Speed Wind Tunnel Improvements UpdateThe 9- by 15-Foot Low Speed Wind Tunnel (9x15 LSWT) at NASA Glenn Research Center was built in 1969 in the return leg of the 8- by 6-Foot Supersonic Wind Tunnel (8x6 SWT). The 9x15 LSWT was designed for performance testing of VSTOL aircraft models, but with the addition of the current acoustic…20170006618
- A 150 and 300 kW lightweight diesel aircraft engine design studyThe diesel engine was reinvestigated as an aircraft powerplant through design study conducted to arrive at engine configurations and applicable advanced technologies. Two engines are discussed, a 300 kW six-cylinder engine for twin engine general aviation aircraft and a 150 kW four-cylinder engine…19800011788
- A Base Drag Reduction Experiment on the X-33 Linear Aerospike SR-71 Experiment (LASRE) Flight ProgramDrag reduction tests were conducted on the LASRE/X-33 flight experiment. The LASRE experiment is a flight test of a roughly 20% scale model of an X-33 forebody with a single aerospike engine at the rear. The experiment apparatus is mounted on top of an SR-71 aircraft. This paper suggests a method…19990026605
- A brief review of aircraft controls research opportunities in the general aviation fieldA review of aircraft controls research in the general aviation field is given. Among the topics included are: controls technology benefits, military and commercial test programs, flight tests, ride quality control, and wind loading.19840012527
- A Comparative Study of Simulated and Measured Gear-Flap Flow InteractionThe ability of two CFD solvers to accurately characterize the transient, complex, interacting flowfield asso-ciated with a realistic gear-flap configuration is assessed via comparison of simulated flow with experimental measurements. The simulated results, obtained with NASA's FUN3D and Exa's…20160006000
- A Comparative Study of Simulated and Measured Main Landing Gear Noise for Large Civil TransportsComputational results for the NASA 26%-scale model of a six-wheel main landing gear with and without a toboggan-shaped noise reduction fairing are presented. The model is a high-fidelity representation of a Boeing 777-200 aircraft main landing gear. A lattice Boltzmann method was used to simulate…NF1676L-25839