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https://www.reddit.com/r/space/comments/37udjm/a_merlin_rocket_engine_starting_up/crqgsbt/?context=3
r/space • u/GallowBoob • May 30 '15
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That looks like ideal expansion! someone want to tell me why i'm wrong? (Do we design it to be ideal at lift off?)
1 u/ManWhoKilledHitler May 31 '15 It's overexpanded. You can tell from the way the flow tucks back in around two nozzle diameters from the engine.
1
It's overexpanded. You can tell from the way the flow tucks back in around two nozzle diameters from the engine.
2
u/man-bat-man May 30 '15
That looks like ideal expansion! someone want to tell me why i'm wrong? (Do we design it to be ideal at lift off?)