Three Lockheed XH-51 helicopters in flight c1965

Autor:

U.S. Department of Defense

Credit:

May 1965, p. 35.
Three Experimental Lockheed XH-51 Helicopters In Flight

Krótki link:

https://plwiki.pl/b/45a99

źródło:

Wikimedia Commons

Wymiary:

1435 x 490 Pixel (438877 Bytes)

Opis:

The three experimental Lockheed XH-51 helicopters in flight (front to back): XH-51A Compound, modified with a four-bladed rotor and stub wings and an auxiliary 2,900 hp Pratt & Whitney J60-2 engine; XH-51A, it had four places and a three-bladed rotor; XH-51N, with five places, a three-bladed rotor, built for NASA test purposes.

Licencja:

Public domain

Komentarz do licencji:

"All photographs published in ALL HANDS are official Department of Defense photographs unless otherwise designated."