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NASA Experimental Aircraft Images – North American Aviation XB-70 Valkyrie cruising altitude

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NASA Experimental Aircraft Images - North American Aviation XB-70 Valkyrie cruising altitude

North American manufactured two airframes. They flew a total of 129 flights between 1964-1969. The joint program among North American Rockwell, the Air Force, and NASA featured the world’s largest experimental aircraft with a delta wing and hinged wing tips that could be folded down to a 65° angle to improve stability.