Wednesday, July 23, 2025

21 April 1961. USAF Major Robert Michael “Bob” White piloted the X-15-2, 56-6671 research aeroplane from Edwards Air Force Base in California on its first flight at full throttle, reaching a speed of 3,074 mph at an altitude of 79,000 feet, before climbing to 105,100 feet.

 




14 comments:

  1. Absolutely amazing plane for its day. Think it would be particularly difficult to design and build the X-15 today with how things function in the corporate aerospace industry.
    Its actual existence is owed in part to a very not top heavy engineering culture.

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  2. When I was a kid in the early 60s, the X-15 was a big deal!

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  3. I fear that we will never see their like again. Steve_in_Ottawa

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  4. This was supposed to be the origin of our space program. Sort of an early shuttle. Rumor is they built three of them and one skipped off into space.

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  5. If memory serves me, he was awarded astronaut wings.

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  6. The guys who flew those things had big brass ones. My brother had a model of the X15 but I have no idea what happened to it.

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    1. Firecrackers and model airplanes were (sometimes..) made for each other.

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  7. In October '67 William J Knight got it up to 4,520 MPH. It survived but the friction heating did a lot of damage.

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  8. Scott Crossfield recounted in his autobiography about his last flight as the civilian test pilot for NA before NASA took delivery.

    The engine throttles were right *there*, he could reach out, flip a switch and easily hit Mach 3 or 4, but it wasn't the job, that was supposed to be for later NASA pilots, so he controlled himself and stayed on plan, kept it below Mach 2.

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  9. 56-6671 was the No. 2 airframe. It was rebuilt into the X15-A2, with an extended fuselage and external tanks for high speed research. A great book is Milton Thompson's "Flying into Space". Milt also wrote a book on the Lifting Bodies.
    Milt Thompson was a relatively unheralded hero of early manned spaceflight, along with Bill Dana.

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    1. Bill Dana?

      "My nang Jose Jimenez..."

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  10. Saw one land in 64. Unforgettable

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  11. Proof, if you needed it, that diversity isn't our strength.

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    Replies
    1. Not that there was much chance to prove it

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