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- Q519432 subject Q6900565.
- Q519432 subject Q8672072.
- Q519432 subject Q8672104.
- Q519432 subject Q8784914.
- Q519432 subject Q9104413.
- Q519432 subject Q9113040.
- Q519432 abstract "The staged combustion cycle, also called topping cycle or preburner cycle, is a thermodynamic cycle used in some bipropellant rocket engines. In staged combustion, one propellant is sent through a preburner and partially burned using a small portion of the second propellant. The resulting hot gas is used to power the engine's turbines and pumps, then injected into the main combustion chamber along with the remainder of the second propellant to complete combustion. There are two main variants of the cycle depending on which propellant is sent through the preburner: oxidizer-rich staged combustion (ORSC) and fuel-rich staged combustion (FRSC).The advantage of staged, or "closed", combustion is that all of the cycle's gases and heat go through the combustion chamber. (An alternative design, called the gas-generator cycle, is an "open" cycle where the gas used to drive the turbopumps is exhausted overboard without passing through the main combustion chamber, reducing efficiency.) Since no propellant is dumped overboard, staged combustion allows for high power turbopumps which permit very high chamber pressures, allowing the use of high expansion ratio nozzles at low altitude for better performance. Disadvantages of staged combustion include harsh turbine conditions, exotic plumbing to carry the hot gases, and complicated feedback and control. In particular, ORSC requires advanced metallurgy due to extremely corrosive oxidizer-rich gas, while FRSC requires use of a fuel that will not coke, such as liquid hydrogen.".
- Q519432 thumbnail Staged_combustion_rocket_cycle.png?width=300.
- Q519432 wikiPageExternalLink 14oct_betterrocket.htm?list804693.
- Q519432 wikiPageExternalLink RPA_en.htm.
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- Q519432 comment "The staged combustion cycle, also called topping cycle or preburner cycle, is a thermodynamic cycle used in some bipropellant rocket engines. In staged combustion, one propellant is sent through a preburner and partially burned using a small portion of the second propellant. The resulting hot gas is used to power the engine's turbines and pumps, then injected into the main combustion chamber along with the remainder of the second propellant to complete combustion.".
- Q519432 label "Staged combustion cycle".
- Q519432 depiction Staged_combustion_rocket_cycle.png.