Aeroacoustical characteristics of a mechanical noise suppressor in a nozzle configuration with a central tailcone
Abstract
Results are presented from model studies on a mechanical noise suppressor in the form of turbulence generators incorporated into a nozzle configuration with a central tailcone. Inasmuch as the ratio between the additional thrust losses created by the active noise suppressor and the noise level reduction is an important characteristic of jet noise suppressors, both the aerodynamic and the acoustical characteristics of the noise suppressors are investigated. The experiments on the acoustical characteristics of mechanical noise suppressors in a nozzle configuration with a central tailcone are carried out on an open acoustic test stand.
- Publication:
-
Akusticheskii Zhurnal
- Pub Date:
- June 1982
- Bibcode:
- 1982AkZh...28..401S
- Keywords:
-
- Aeroacoustics;
- Jet Aircraft Noise;
- Noise Reduction;
- Nozzle Inserts;
- Vortex Generators;
- Conical Nozzles;
- Effective Perceived Noise Levels;
- Noise Measurement;
- Nozzle Geometry;
- Nozzle Thrust Coefficients;
- Acoustics