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Originally posted by BlasteR
I'm just saying that it uses air in small amounts at a time for each detonation. Not exactly what we are used to with the more traditional "air-breathing" engines from years gone past. But I get what you are saying too. Technically, since it uses an air-fuel mixture it is an air-breathing engine. But a large majority of the air simply passes through the system. That's all I'm really saying.
reply to post by jerry777
Aurora has never existed. There is no reason for a PDE, when you have hybrid engines like the SR-71 used, as well as other advanced engines that we haven't seen. A PDE is inefficient, and slow.