Summary[ ]

English: The second Lockheed XH-51A, BuNo 151263, following its conversion into a compound rotorcraft testbed. The single J60 turbojet, stub wings and other refinements allowed the XH-51 Compound to set an unofficial rotorcraft level-flight speed record in June 1967. The chin-mounted probe carried special test intrumentation.
Date mid-1960s
Source https://www.flickr.com/photos/sdasmarchives/4562030384/in/photostream/
Author San Diego Air and Space Museum Archives
(Reusing this file)

U.S. Army photograph via San Diego Air & Space Museum Archive

Licensing[ ]

Public domain This image is a photograph from San Diego Air & Space Museum at no known restrictions on the publication of these photos.

Checked copyright icon.svg This image was originally posted to FlickreviewR, who found it to be licensed under the terms of the No known copyright restrictions, which is compatible with the Commons. It is, however, not the same license as given above, and it is unknown whether that license ever was valid.
Public domain
This image is a work of a U.S. Army soldier or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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Checked copyright icon.svg This image, originally posted to Flickr, was reviewed on by the administrator or reviewer Leoboudv, who confirmed that it was available on Flickr under the stated license on that date.