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The XB-70 (2019) by rbanffy

The XB-70 (2019) by rbanffy

9 Comments

  • Post Author
    Syonyk
    Posted February 25, 2025 at 6:32 pm

    That era of aviation was nuts. I wish I was around for it. Men with slide rules working out the limits of material science, aerodynamics, and everything else, all at once. Because it wasn't enough to just push one limit, you had to push half a dozen others to get things to that first limit. And the rate of advance was just staggering.

    The XB70 flew in late 1964. Concorde was doing revenue flights in 1976, cruising at Mach 2, with passengers being served luxury food.

    > The Air Force learned that pushing the technological envelope resulted in plane that was difficult to build, difficult to maintain, difficult to fly, and perhaps even more importantly, was incredibly expensive; the program cost nearly 1.5 billion dollars, or around 11 million dollars per flight.

    And nothing has changed. Pushing the limits is expensive. Always has been, always will be.

  • Post Author
    runjake
    Posted February 25, 2025 at 6:36 pm

    As someone who once worked on B-52s, I find it amusing how many "successors" it has outlasted. And I know why, because I worked on many of those, too.

    It has taught me to be skeptical of unproven claims and promises, especially when someone is particularly passionate about them. Also that simplicity is king. Complexity is the enemy.

    I have great respect for the XB-70. It's the only strategic bomber I haven't worked on or even seen in person, and it holds a certain "alternate reality" mystique for me.

  • Post Author
    ge96
    Posted February 25, 2025 at 6:42 pm

    A beautiful plane, shame those 6 engines in line is unreal to see.

    Similar vibe would be the B1-lancer for engine although in 2s

  • Post Author
    ben7799
    Posted February 25, 2025 at 6:42 pm

    I have a love/hate relationship with this plane.

    In 2014 I got to visit the AF Museum in Dayton, OH. With all the exceptional exhibits there it is completely obvious the XB-70 is THE crown jewel in that museum.

    And it snowed while we were visiting and they shut down the hangar with the XB-70 because it required a shuttle ride.

    So now I still have on my bucket list to see it.

  • Post Author
    ferguess_k
    Posted February 25, 2025 at 7:08 pm

    The Cold War era was the dream of engineers of all participant countries, I figured. Are we close to another one? Just wanna make sure it doesn't turn into a hot one.

  • Post Author
    tqi
    Posted February 25, 2025 at 7:18 pm

    "got a job with the Flight Propulsion Division of General Electric in Evendale (just outside of Cincinnati), initially working night shift in the Controls and Accessories department… the engine required the efforts of hundreds of engineers to design everything from a new turbofan and compressor, to new fire-suppression systems, to a special high-temperature fuel. Exactly what part my dad worked on is unclear; I always thought it was an oil pan, but my older brother was sure it was an oil pump."

    This small detail peaked my curiosity – did GE have white collar workers on the night shift? If so, that is super interesting to me.

  • Post Author
    sgt101
    Posted February 25, 2025 at 7:53 pm

    Does anyone know why they went for six engines rather than four bigger ones? Was there a specific reason for that config?

  • Post Author
    retrocryptid
    Posted February 25, 2025 at 8:51 pm

    I remember seeing this beast at the Air Force 25th anniversary in '72 at wright pat. Pretty sure the one I saw didn't ever fly again.

  • Post Author
    ellisd
    Posted February 25, 2025 at 9:20 pm

    The ejection capsule design for the XB-70 is some next level engineering. Your seat would move backward into a capsule before ejection to survive the cruising altitudes of 70k feet / Mach 3.

    https://www.generalstaff.org/CDA/Air/B-70/XB-70_Escape_Syste…

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