DFRC Photo #	Photo Date	Image Description
		XB-70 Valkyrie Photo Collection Contact Sheet
ECN-1814	1967	XB-70A parked on ramp
EC68-2101	1968	XB-70A on ramp
ECN-792	August 17, 1965	XB-70A taking off
E-16695	1967	XB-70A taking off
ECN-2128	1968	XB-70A in flight
EC68-2131	1968	XB-70A in flight
ECN-1008	1965	XB-70A windscreen assembly closeup in supersonic flight configuration
ED97-44244-2	1960s	XB-70A #1 liftoff with TB-58A chase aircraft
ED97-44244-3	1960s	XB-70A landing with drag chutes deployed
ED97-44244-1	1965	XB-70A #1 cockpit
E-17242	1967	X-15 and XB-70 parked on NASA ramp

During the early 1960s, the NASA Flight Research Center was involved in support of the national Supersonic Transport Program (SST). Two prototype Mach 3+ high altitude bombers, built by North American Aviation for the Air Force, became available for SST research with the cancellation of their intended military program. The XB-70A Valkyrie was the largest experimental aircraft, measuring 190 feet in length, with a wing span of 105 feet and standing 33 feet in height. The aircraft had a delta wing and hinged wing tip that could be folded down to a 65 degree angle to improve stability at the aircraft's supersonic speeds of up to Mach 3. At this speed the Valkyrie was designed to ride its own shock wave.

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