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Keywords from Image Description:
Hydrogen Oxigen External Combustion Engine. en schematic of emissionless external combustion fact or rocket engine The schematic was based on an image in the book Lucht en ruimtevaart by Hugh Johnstone HydrogenOxigenExternalCombustionEngine UTC HydrogenOxigenExternalCombustionEngine KVDP derivative work Damnfuct talk Corrected