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a Combination engine is Jetengine & Ramjet
the Jetengine push aircraft on speed until the Ramjet takes over and goes supersonic
so wat ? the Concorde hat Olympus 593 Mk 610 afterburning turbojets to get Mach 2.2
yes that true, but Ramjet have one big advance: Reduction of the fuel consumption !

means lower fuel & operating cost or bigger range for Concorde

pushing the range of 3690 to 4079 miles (from 5938 km to 6.564 km)
the Concorde Combination engine can fly over Pacific Ocean: L.A. - Honolulu - Tokyo or Hong Kong

So how would look the Jetset World with a cheaper longrange Concorde ?

P.s the SR-71 used simelar principe with J-58-1 Engine
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