Flight-Determined Engine Exhaust Characteristics of an F404 Engine in an F-18 Airplane

Ennix, Kimberly A. and Burcham Jr., Frank W. and Webb, Lannie D. (1993) Flight-Determined Engine Exhaust Characteristics of an F404 Engine in an F-18 Airplane. Technical Report NASA TM-4538, Research Engineering, NASA Dryden Flight Research Center.

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Abstract

Personnel at the NASA Langley Research Center (NASA-Langley) and the NASA Dryden Flight Research Facility (NASA-Dryden) have recently completed a joint acoustic flight test program. Several types of aircraft with high nozzle pressure ratio engines were flown to satisfy a twofold objective. First, assessments were made of subsonic climb-to-cruise noise from flights conducted at varying altitudes in a Mach 0.30 to 0.90 range. Second, using data from flights conducted at constant altitude in a Mach 0.30 to 0.95 range, engineers obtained a high-quality noise database. This database was desired to validate the Aircraft Noise Prediction Program and other system noise prediction codes. NASA-Dryden personnel analyzed the engine data from several aircraft that were flown in the test program to determine the exhaust characteristics. The analysis of the exhaust characteristics from the F-18 aircraft will be reported in this paper. This paper presents an overview of the flight test planning, instrumentation, test procedures, data analysis, engine modeling codes, and results.

EPrint Type:	NASA Technical Memorandum
Keywords:	Acoustics, Climb to cruise, Engine exhaust characteristics, Environmental impact
Subjects:	(01 - 09) Aeronautics: (07) Aircraft Propulsion And Power (01 - 09) Aeronautics: (05) Aircraft Design, Testing And Performance Aircraft/Project: F-18
ID Code:	258
Deposited On:	23 July 2004
Additional Information:	15 pages. Prepared as AIAA-93-2543 for presentation at the AIAA/SAE/ASME/ASEE 29th Joint Propulsion Conference and Exhibit, Monterey, California, June 28–30, 1993.