Uncertainties concerning atmospheric pollution, airport-community noise, and sonic booms, are the concerns of NASA's High-Speed Research Program. Current analytical predictions are of an operational regime centered on Mach 2.4/20-km altitude where the goal of 5-gm equivalent NO2 emissions/kg fuel can result in no more than 1-percent column ozone depletion. Jet-noise suppressors using a mixer-ejector device are seen as capable of furnishing substantial noise reduction. Low-boom aerodynamic configurations are under scrutiny to maximize aircraft economic performance through overland supersonic flight.
Technical bases for High Speed Civil Transport environmental acceptability
1991-09-01
Aufsatz (Konferenz)
Keine Angabe
Englisch
NTIS | 1991
NTRS | 1991
NTRS | 1990
|NTIS | 1990
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