Flight Tests of the Sikorsky HNS-1 (Army YR-4B) Helicopter 1: Experimental Data on Level-Flight Performance With Original Rotor Blades
| Author: | Gustafson, F. B. |
|---|---|
| Year: | 1945 |
| Document Type: | N/A |
| Series: | NACA Wartime Reports |
| Report Number: | NACA-WR-L-595, NACA-MR-L5C10 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc61836/ |