INFLUENCE OF SHAFT ANGLE-OF-ATTACK ON SOUND RADIATION BY SUBSONIC PROPELLERS

Authors
KELLY JJ NGUYEN LC
Citation
Jj. Kelly et Lc. Nguyen, INFLUENCE OF SHAFT ANGLE-OF-ATTACK ON SOUND RADIATION BY SUBSONIC PROPELLERS, Journal of aircraft, 34(4), 1997, pp. 539-544
Citations number
15
Categorie Soggetti
Aerospace Engineering & Tecnology
Journal title
Journal of aircraft → ACNP
ISSN journal
00218669
Volume
34
Issue
4
Year of publication
1997
Pages
539 - 544
Database
ISI
SICI code
0021-8669(1997)34:4<539:IOSAOS>2.0.ZU;2-J
Abstract
The formulation to account for effects of propeller angle of attack on acoustic radiation by propellers is presented. A propeller operating at an angle of attack presents a nonuniform inflow situation that is k nown to have a pronounced influence on noise, Noise predictions, based on this new formulation, are compared with measured wind-tunnel data, Predictions for observers fixed in the propeller plane are also inclu ded to assess the influence of shaft angle of attack.