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{{Short description|Rocket engine}} ...[[reduction oxidation|redox]] ([[combustion]]) reaction as in a [[chemical rocket]]. ...

{{Short description|Soviet (now Russian) liquid rocket engine}} {{infobox rocket engine ...

...''' refers to the process by which the fuel grain of a [[hybrid-propellant rocket]] is converted from a solid to a gas that is combusted. It encompasses the Because the quantity of [[Rocket propellant|fuel]] being burned is important for the effectiveness of combustion in the ...

...pulse (physics)|impulsive]] [[thrust]]s produced by traditional [[chemical rocket]]s. For the first half of the journey the propulsion system would constantl ...).</ref> can travel vast distances, although is limited by the mass of any propellant it carries.]] ...

...minated by combustion products. Working fluids for ''external'' combustion engines include air, hot water, [[pressurized water reactor|pressurized water]] or .....227S }}</ref> Renewable fuels are commonly blended with fossil fuels. [[Hydrogen]], which is rarely used, can be obtained from either fossil fuels or renewa ...

...| first1=Peter | last2=Zeyat | first2=Hanan | title=Voltammetric analysis using a self-renewable non-mercury electrode | journal=Analytical and Bioanalytic ...producing liquids such as [[liquid oxygen]], [[liquid nitrogen]], [[liquid hydrogen]] and [[liquid helium]]. Not all gases can be liquified at atmospheric pres ...

...h an atmosphere, and it requires less fuel than does the direct use of a [[rocket engine]]. ...[[altitude]]s. It belongs to the class of [[altitude compensating nozzle]] engines. A vehicle with an aerospike engine uses 25–30% less fuel at low altitudes, ...

...the [[Ginzburg–Landau theory]] of [[superconductivity]], a developer of [[hydrogen bomb]], Nobel Prize winner[[File:Pyotr L Kapitsa Russian physicist 1964.jpg ...r of [[Shubnikov–de Haas effect]], one of the first researchers of [[solid hydrogen]] and [[liquid helium]] ...