in replying to a post by remus i stumbled across something I'd never encountered before, quasiturbine engines, this is awesome stuff, imagine an advanced rotary engine which can run on almost any fuel including hydrogen, the engine can utilise something called photo detonation which uses extremely high pressure to ignite the fuel air mix, the combustion is so efficient that there is almost no dirty exhaust product, so no catalytic convertor would be needed.
for those of you who are interested here is what I read, it has moving pictures and is really fascinating.
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