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Originally Posted by kato13
Well anything without true Jet propulsion would be limited to sub mach speeds (around 80% IIRC). That makes me think more of Cargo and Coin aircraft, but the A-10 is subsonic  . |
Just did some research into supercruise. It IS possible for turbofan achieve and maintain supersonic speeds without afterburners. The aircraft just spends a great deal of time in the high-drag transonic flight envelope. So it is not preferred because it is fuel inefficient. But in a fusion powered aircraft, might not be a problem.