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"Two revolutionary aerospace technologies collide as GE Aerospace and Lockheed Martin team up to demonstrate a new liquid-fueled rotating-detonation ramjet (RDRJ) designed to close the "efficiency gap" in hypersonic flight with new tactical inlets. ...
GE and Lockheed Martin plan to get around this by accelerating the missile using a rotating detonation engine, which uses a supersonic wave of detonating fuel that runs about inside an open-ended cylinder as fuel and water is fed in. This produces a self-sustaining cycle that maintains pressure during combustion. ...
Such an engine is 25% more efficient than a conventional engine, allowing it to be much more compact and lighter. It can also operate at subsonic speeds and the design allows it to modify itself so it can act as a ramjet at supersonic speeds and a scramjet at hypersonic speeds, so smaller rocket boosters are needed. ..."
"GE Aerospace (NYSE:GE) and Lockheed Martin (NYSE: LMT) completed a series of engine tests demonstrating the viability of a liquid-fueled rotating detonation ramjet for use in hypersonic missiles, the first initiative between the companies under a broader joint technology development arrangement. ..."
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