Flight tests were conducted in a CV-990 jet transport with engines at idle power to investigate aircraft airframe noise. Test results showed that airframe noise was measured for the aircraft in the landing configuration. The results agreed well with the expected variation with the fifth power of velocity. For the aircraft in the clean configuraton, it was concluded that airframe noise was measured only at higher airspeeds with engine idle noise present at lower speeds. The data show that landing gear and flaps make a significant contribution to airframe noise. (Author)
Preliminary Measurements of Aircraft Airframe Noise with the NASA CV-990 Aircraft
1976
18 pages
Report
Keine Angabe
Englisch
Measurements and analysis of aircraft airframe noise
NTRS | 1975
|Measurements and analysis of aircraft airframe noise
AIAA | 1975
|Propulsion Airframe Aeroacoustics and Aircraft System Noise Flight Research Test: NASA Overview
British Library Conference Proceedings | 2022
|