The X-15 Rollout

The first X-15 (56-6670) rocket powered research aircraft is rolled out in 1958. At this time, the XLR-99 rocket engine is not ready, so to make the low-speed flights (below Mach 3), the X-15 team will fit a pair of XLR-11 engines into the modified rear fuselage. These were basically the same engines used in the X-1 aircraft.

The X-15 is a product of the accumulated knowledge of manned rocket craft, the first true spacecraft, with hope to make our first flight to the edge of space.

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