NASA Technical Reports Server (NTRS) : Comparisons pdf

NASA Technical Reports Server (NTRS) : Comparisons

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A flight test was performed at NASA Dryden Research Center in November 1991 utilizing both F18 and Fl6 aircraft. These flights were designed to provide (1) acoustic data that could be extrapolated to that of an HSCT at various points of its climb-to-cruise operation and (2) a data base for noise from a supersonic jet exhausting from an aircraft moving at high subsonic speeds. This presentation utilizes data obtained from these flyovers to evaluate predictions of broadband shock noise from supersonic jets in flight. The Fl8 is particularly suitable for flyovers of shock noise since it can be flown with one engine at flight idle. The second engine can then be operated at a pressure high enough to produce a supersonic nozzle exhaust and still maintain an unaccelerated, level flyover

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 9/1/1999
• Year: 1999
• Book Topics/Themes: NASA Technical Reports Server (NTRS), SHOCK WAVES, NOISE PREDICTION, FLIGHT TESTS, DATA BASES, SUPERSONIC NOZZLES, AERODYNAMIC NOISE, SUPERSONIC TRANSPORTS, SUPERSONIC JET FLOW, GAS JETS, CLIMBING FLIGHT, CIVIL AVIATION, BROADBAND, ACOUSTIC PROPERTIES, Norum, T. D., Golub, R. A., Willshire, W. L

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