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1 vote
0 answers
106 views

Would a ramjet be able to fly at 1% of sea level atmosphere and pure oxygen? [duplicate]

1% (0.01 atm) of the sea level pressure is a bit less pressure than at the SR-71 Blackbird's highest altitudes. If all that atmosphere was 100% oxygen (instead of 21%), would a (sc)ramjet still be ...
Giovanni's user avatar
  • 543
2 votes
3 answers
294 views

What mechanism or design aspect prevents jet blast from escaping the front of a Ramjet or scram jet?

Enormous air pressures result in the thrust of a Scram jet or ramjet engine, more so the pressure required to drive the aircraft forward at supersonic and hypersonic speeds. Given that these engines ...
securitydude5's user avatar
8 votes
2 answers
3k views

What is the effect of Mach number on efficiency, thrust and specific fuel consumption of a ramjet engine?

My graphs show that overall efficiency and thrust first increase, reach a peak and then fall in the supersonic range (M=1-5) whereas SFC first drops and then increases rapidly near M 5. Why does this ...
Ashish Rana's user avatar
9 votes
3 answers
16k views

Are there any planes that have ramjet or scramjet engines?

Are there any planes that have ramjet or scramjet engines? If so, how did they reach the required mach speed for the engines to start functioning?
securitydude5's user avatar