• justchaz

    @1:03 “Main engines at 108%?” as right engine flares up.

  • Spambot1


  • Hug Doug

    that’s normal. the Shuttle launched with engines at 109% rated thrust, and could be throttled up up to 111% in an emergency. the thrust increase was the result of upgrades and performance improvements on the engine design through its time of use in the Shuttle program.

  • Enrique Moreno

    Thankfully, they do not use toxic hypergolic fuels

  • Sam Moore

    Did you miss the first three falcon 1 launches?

  • Hug Doug

    the Cygnus does use hydrazine for its thrusters.

  • justchaz


  • windbourne

    Yeah, but that was 6 years ago.
    Over the last 5, OSC has had 3 failures.
    However, with that said, this could still happen to anyone.
    Personally, I think what keeps spaceX safe, is their approach to QA which is to monitor everything, and stop on anything.

  • john

    what could cause that flare? turbopump delivering too much fuel? rocket bell failure causing the thrust to fan out?

  • justchaz

    Breach of some sort. Joint or mechanically caused, something coming apart, allowing high pressure fuel flow that visibly continuously accelerated the fire and subsequent disintegration on that right engine, from the view of the above video. When SpaceX had their single engine failure, part of the nozzle fell harmlessly, the engine shut down and vehicle remained in flight. This has to have been in the turbopump, like you suggest, chamber or piping. May as well make use of this guessing season. đŸ˜‰