Abstract
The propeller blade forces are replaced by doublet and quadrupole distributions for the acceleration potential. An essential step in the solution is the derivation of a near-field and a far-field formula for the pressure due to a point force in arbitrary motion within a uniformly moving acoustic medium. The discrete frequency spectrum and the three-dimensional directionality of the noise radiated from a propeller with angular inflow are obtained by a conventional Fourier series expansion of the signature. The final analytical formulas can be evaluated with simple calculation.
| Original language | English |
|---|---|
| Pages (from-to) | 777-782 |
| Number of pages | 6 |
| Journal | AIAA Journal |
| Volume | 26 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 1988 |
ASJC Scopus subject areas
- Aerospace Engineering