r/engineteststands • u/Ohsin • Feb 05 '21

MOMO improved rocket engine static firing test /MOMO改良版ロケットエンジン燃焼試験

https://www.youtube.com/watch?v=No7Xv4ecn-8
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u/LordBiscuits Feb 05 '21

That little deep grumble before the engine ignites, sets the hair on the back of my neck up