Submitted by Global_Maize_8944 t3_10nculi in explainlikeimfive
noopenusernames t1_j6c1cbx wrote
Reply to comment by JakeMeOff11 in ELI5: What is the difference between turbojet, ramjet, and scramjet? by Global_Maize_8944
What about the SR-71? I’m not too familiar but that plane did not have an alternate engine to get it airborne. Is that why the nose cone shifted, to make the engine behave more like a scramjet as opposed to a ramjet during certain phases of flight? Or was that more just to guide air into the intake better at higher speeds?
JakeMeOff11 t1_j6c1wnz wrote
Looks like the SR-71 ran on two turbojet engines. The article states that the engines used some sort of compressor bleed to increase power for the afterburners at speeds greater than Mach 2, which kind of made it seem like it was a sort of “turbo-ramjet” engine, which I don’t think is actually a thing, but it was just a turbojet engine.
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