ACCEPTABILITY OF VTOL AIRCRAFT NOISE DETERMINED BY ABSOLUTE SUBJECTIVE TESTING[NASA CR-2043] - Sternfeld, Harry; Hinterkeuser, Ernest G.; Heckman, Roy B.; Davis, Jerry (NASA Washington, D. C., 1972)
Bound With NASA CR-2041-45( Bound Acc. No. 101576)
Keywords: Aircraft noise; VTOL noise