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- Cryogenic_rocket_engine abstract "A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel or oxidizer, that is, its fuel or oxidizer (or both) are gases liquefied and stored at very low temperatures. Notably, these engines were one of the main factors of NASA's ultimate success in reaching the Moon by the Saturn V rocket.During World War II, when powerful rocket engines were first considered by the German, American and Soviet engineers independently, all discovered that rocket engines need high mass flow rate of both oxidizer and fuel to generate a sufficient thrust. At that time oxygen and low molecular weight hydrocarbons were used as oxidizer and fuel pair. At room temperature and pressure, both are in gaseous state. Hypothetically, if propellants had been stored as pressurized gases, the size and mass of fuel tanks themselves would severely decrease rocket efficiency. Therefore, to get the required mass flow rate, the only option was to cool the propellants down to cryogenic temperatures (below −150 °C, −238 °F), converting them to liquid form. Hence, all cryogenic rocket engines are also, by definition, either liquid-propellant rocket engines or hybrid rocket engines.Various cryogenic fuel-oxidizer combinations have been tried, but the combination of liquid hydrogen (LH2) fuel and the liquid oxygen (LOX) oxidizer is one of the most widely used. Both components are easily and cheaply available, and when burned have one of the highest enthalpy releases by combustion, producing specific impulse up to 450 s (effective exhaust velocity 4.4 km/s).".
- Cryogenic_rocket_engine thumbnail Moteur-Vulcain.jpg?width=300.
- Cryogenic_rocket_engine wikiPageExternalLink rl10b2.htm.
- Cryogenic_rocket_engine wikiPageExternalLink index.htm.
- Cryogenic_rocket_engine wikiPageID "22739594".
- Cryogenic_rocket_engine wikiPageRevisionID "596898162".
- Cryogenic_rocket_engine hasPhotoCollection Cryogenic_rocket_engine.
- Cryogenic_rocket_engine subject Category:Rocket_propulsion.
- Cryogenic_rocket_engine comment "A cryogenic rocket engine is a rocket engine that uses a cryogenic fuel or oxidizer, that is, its fuel or oxidizer (or both) are gases liquefied and stored at very low temperatures.".
- Cryogenic_rocket_engine label "Cryogenic rocket engine".
- Cryogenic_rocket_engine sameAs m.05zp2vh.
- Cryogenic_rocket_engine sameAs Q5190528.
- Cryogenic_rocket_engine sameAs Q5190528.
- Cryogenic_rocket_engine wasDerivedFrom Cryogenic_rocket_engine?oldid=596898162.
- Cryogenic_rocket_engine depiction Moteur-Vulcain.jpg.
- Cryogenic_rocket_engine isPrimaryTopicOf Cryogenic_rocket_engine.
