- Evaluation of helicopter noise due to blade-vortex interaction for five tip configurations
Technical Report
CID:
- 108655
Authors:
- Hoad, D.R.
Publication Date:
- 01 December 1979
Subjects:
- Acoustics
Notes:
- (DAT) 1979
Report Number:
- NASA TP-1608
Publication Date Information:
- December 1979