The speed where its start to deliver trust can be very low, I heard of a starting a ramjet helicopter by moving the rotor by hand !.
Just what speed you designed it for I guess.
Ebay Ram
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re: Ebay Ram
i have seen (yes in real life) someone starting a ramjet helicopter by hand. they turned on the spark and fuel and spun it as fast as they could, it started up quite readily actually...
Sailing Student- How do I know if my life jacket is tight enough?
Me- Can you breathe?
Sailing Student- Yes
Me- Then its too loose!
Me- Can you breathe?
Sailing Student- Yes
Me- Then its too loose!