Engine Exhaust Characteristics Evaluation in Support of Acoustic Testing
Ennix, Kimberly A. (1993) Engine Exhaust Characteristics Evaluation in Support of Acoustic Testing. Technical Report NASA TM-104263, Research Engineering, NASA Dryden Flight Research Center.
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Abstract
NASA Dryden Flight Research Facility and NASA Langley Research Center completed a joint acoustic flight test program. Test objectives were (1) to quantify and evaluate subsonic climb-to-cruise noise and (2) to obtain a quality noise database for use in validating the Aircraft Noise Prediction Program. These tests were conducted using aircraft with engines that represent the high nozzle pressure ratio of future transport designs. Test flights were completed at subsonic speeds that exceeded Mach 0.3 using F-18 and F-16XL aircraft. This paper describes the efforts of NASA Dryden Flight Research Facility in this flight test program. Topics discussed include the test aircraft, setup, and matrix. In addition, the engine modeling codes and nozzle exhaust characteristics are described.
| EPrint Type: | NASA Technical Memorandum |
|---|---|
| Keywords: | Acoustics, Engine modeling codes, Noise, Nozzle exit velocity, Nozzle pressure ratio |
| Subjects: | (01 - 09) Aeronautics: (07) Aircraft Propulsion And Power (01 - 09) Aeronautics: (05) Aircraft Design, Testing And Performance Aircraft/Project: F-18 Aircraft/Project: F-16XL |
| ID Code: | 253 |
| Deposited On: | 23 July 2004 |
| Additional Information: | 12 pages. Presented at Society of Women Engineers National Conference, Chicago, Illinois, June 21–27, 1993. |
