En route noise of turboprop aircraft and their acceptability: Report of tests
Abstract
The development of propfan-powered aircraft has been observed with great interest. It is obvious that during cruising flight, the aircraft powerplant (propellers) cause a noise clearly perceivable on the ground. It is the audible frequency spectrum of the propfan powerplants relative to the high tip speeds that presents the problem. A flight test was conducted on 30 April, 1989 at the Frankfurt Airport. Results of the test flight are present.
- Publication:
-
En Route Noise Symposium
- Pub Date:
- April 1990
- Bibcode:
- 1990ern..nasa...61H
- Keywords:
-
- Acceptability;
- Flight Tests;
- Prop-Fan Technology;
- Propeller Noise;
- Propellers;
- Routes;
- Tip Speed;
- Turboprop Aircraft;
- Airports;
- Cruising Flight;
- Frequency Distribution;
- Hearing;
- Propeller Fans;
- Acoustics