Conventional, “air-breathing” jet engines like those seen in large passenger aircraft actively draw in and compress oxygen to allow them to burn fuel as they fly — for example, through rotating fan blades.
Above three times the speed of sound, however, this becomes unnecessary, as the passage of the jet or weapon through the air achieves this by itself.
So-called ramjet and scramjet engines that take advantage of this principle can achieve levels of fuel efficiency that, for comparison, rockets can not.
Accordingly, the Feitian-1 is more lightweight than current boost-glide weapons systems like the US Air Force’s AGM-183 ARRW, Overdefense.com report.
This will allow the rocket to carry either more fuel, thereby increasing its range, or a larger payload.
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