Flight Tests of the Sikorsky HNS-1 (Army YR-4B) Helicopter 1: Experimental Data on Level-Flight Performance With Original Rotor Blades (Listing Multiple Pages).
| Filename | Size | Format | Download |
|---|---|---|---|
| 19930093085.pdf | 13.5 MB | application/pdf | Download |
| Filename | Size | Format | Download |
|---|---|---|---|
| 19930093085.pdf | 13.5 MB | application/pdf | Download |