Vertol H-21 "Work Horse"
1964
31 S.
Sonstige
Deutsch
RVK: | ZO 7400 |
Vertol 44 certificated for commercial operation
Engineering Index Backfile | 1957
|Features of amphibious Vertol Model 44 Helicopter
Engineering Index Backfile | 1958
|Measurements on Vertol H-21 Helicopter
NTIS | 1968
|Rotorcraft Technology at Boeing Vertol: Recent Advances
NTIS | 1988
|Rotorcraft technology at Boeing Vertol: Recent advances
NTRS | 1988
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