6a746864_Jet_engine___Engineering__Type
[Description] Carries own propellant onboard, emits jet for propulsion [Advantages] Very few moving parts, Mach 0 to Mach 25+, efficient at very high speed (> Mach 10.0 or so), thrust/weight ratio over 100, relatively simple, no air inlet, doesn't require atmosphere, high compression ratio, very high speed exhaust [Disadvantages] very low specific impulse- typically 100-450 seconds. Typically requires carrying oxidiser onboard which increases risks. [Type] 
Rocket
Jet engine - Engineering
Type