15 votes

SpaceX’s new Raptor rocket engine is a methane fueled full flow staged combustion cycle engine

5 comments

  1. [3]
    poopfeast6969
    Link
    Can anyone figure what the disadvantages of full flow staged combustion might be over regular partial(?) flow? All I've got is larger/heavier turbo pumps.

    Can anyone figure what the disadvantages of full flow staged combustion might be over regular partial(?) flow?
    All I've got is larger/heavier turbo pumps.

    3 votes
    1. [2]
      Eylrid
      Link Parent
      It's harder to pull off. It's hard to come up with an alloy that can withstand the hot oxygen on the oxygen rich side. To quote Elon Musk "Almost any metal turns into a flare in those conditions."...

      It's harder to pull off. It's hard to come up with an alloy that can withstand the hot oxygen on the oxygen rich side. To quote Elon Musk "Almost any metal turns into a flare in those conditions." The fuel rich side restricts what kinds of fuels you can use. You can't use RP-1, the refined kerosene that a lot of rockets use, because it cokes up and clogs the engine.

      2 votes
      1. poopfeast6969
        (edited )
        Link Parent
        I think that applies to all staged combustion engines that burn oxygen rich. Something something secret soviet alloy Staged combustion has been flown before, although never full flow staged...

        I think that applies to all staged combustion engines that burn oxygen rich. Something something secret soviet alloy

        Staged combustion has been flown before, although never full flow staged combustion as far as I'm aware. Which is what's unusual about the raptor.

        1 vote
  2. [2]
    emdash
    Link
    Here's a much better article minus the blogspam and site owner's self-promotion.

    Here's a much better article minus the blogspam and site owner's self-promotion.

    2 votes
    1. Eylrid
      Link Parent
      This isn't just a rehash of the wikipedia article. There is a lot of good explanation and information that isn't in the wikipedia article. This article and accompanying video represent months of...

      This isn't just a rehash of the wikipedia article. There is a lot of good explanation and information that isn't in the wikipedia article. This article and accompanying video represent months of work by the author. He's entitled to a little self promotion on his own site for that work.

      9 votes