4 ms·

For those who want to see it in action: https://www.youtube.com/watch?v=CombVB48ziY https://www.youtube.com/watch?v=CombVB48ziY

• ortusdux 5y ago
  Thanks for this. I wonder if they do spectroscopy on the exhaust plume. You can tell that it is burning a little engine rich at the start.
• dtgriscom 5y ago
  My reaction to the greenish tinge of the flame was "I wonder what part of the engine is melting away?"
  • JorgeGT 5y ago
    The aerospike itself maybe? It's 3D printed in a fancy copper alloy, and copper burns green...
  • MobiusHorizons 5y ago
    Couldn’t that be TEA-TEB, often used to start rocket engines?
    • panick21_ 5y ago
      Then it wouldn't stay green for very long.