piston but instead have a rotor that also cycles through the 4 main stages of engines (intake, compression, combustion and exhaust). There are many different
stationary or portable, can be single or multi-staged, and can be driven by electric motors or internal combustion engines. Small reciprocating compressors
atmosphere), they would switch to a closed cycle rocket mode, using on-board liquid oxidizer to continue fuel combustion and propel the craft. Skylon is still