Theory on acoustic sources
Abstract
A theory is described for the radiation emission emission from acoustic multipole sources. The sources can be stationary or moving at speeds including supersonic and experience stationary or moving disturbances. The effect of finite source distributions and disturbances is investigated as well as the manner in which they interact. Distinction is made between source distributions that responsed as a function of time and those that respond as a function of space.
- Publication:
-
Helicopter Acoustics, Pt. 2
- Pub Date:
- August 1978
- Bibcode:
- 1978heac.nasa..127W
- Keywords:
-
- Aeroacoustics;
- Aircraft Noise;
- Helicopters;
- Noise Propagation;
- Rotary Wings;
- Noise Spectra;
- Prediction Analysis Techniques;
- Radiation Spectra;
- Acoustics