Abstract
The paper describes a methodology for the simple prediction of noise generated by a tilt-rotor aircraft in hover and forward flight. In order to avoid the computational penalties associated with exact noise calculations, simplifications to the loading noise calculation and the blade-vortex interaction noise calculation have been introduced. The loading noise computation utilizes a constant chordwise loading assumption, while the BVI noise level is estimated through use of a dimensionless parameter, here termed `BVI number.' The acoustic computation code, designed as a module for use with VASCOMP, has two modes of operation, one as a quick estimator of acoustic amplitude produced by a tilt rotor with a typical rotor design and the other as a tool for rotor parametric design studies.
| Original language | English (US) |
|---|---|
| Title of host publication | Annual Forum Proceedings - American Helicopter Society |
| Publisher | American Helicopter Soc |
| Pages | 259-265 |
| Number of pages | 7 |
| Volume | 1 |
| State | Published - 1996 |
| Event | Proceedings of the 1996 52nd Annual Forum. Part 1 (of 3) - Washington, DC, USA Duration: Jun 4 1996 → Jun 6 1996 |
Other
| Other | Proceedings of the 1996 52nd Annual Forum. Part 1 (of 3) |
|---|---|
| City | Washington, DC, USA |
| Period | 6/4/96 → 6/6/96 |
ASJC Scopus subject areas
- Aerospace Engineering
- Transportation