The influence of increased motive power and airspeed on noise levels within 163 fixed- and rotary-wing aircraft is depicted in 9 noise-exposure envelopes. Increased power and airspeed resulted in increments in cockpit noise in all of these aircraft groups. Changes in acoustic spectra and speech interference are illustrated and described. (Author)
Airspeed Influence on Noise within Fixed- and Rotary-Wing Aircraft
1970
21 pages
Report
No indication
English
Rotary wing of fixed-wing aircraft and aircraft with rotary wing
European Patent Office | 2024
|Aircraft, Fixed and Rotary Wing
NTIS | 1971