Flight Tests of the Sikorsky HNS-1 (Army YR-4B) Helicopter 2: Hovering and Vertical-Flight Performance With the Original and an Alternate Set of Main-Rotor Blades, Including a Comparison With Hovering Performance Theory
| Author: | Gustafson, F. B. |
|---|---|
| Year: | 1945 |
| Document Type: | N/A |
| Series: | NACA Wartime Reports |
| Report Number: | NACA-WR-L-596, NACA-MR-L5D09a |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc61839/ |