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The pressure-fed engine is a class of rocket engine designs. A separate gas supply, usually helium, pressurizes the propellant tanks to force fuel and oxidizer to the combustion chamber. To maintain adequate flow, the tank pressures must exceed the combustion chamber pressure. Some launcher upper stages also use pressure-fed engines. These include the Aerojet AJ10 and TRW TR-201 used in the second stage of Delta II launch vehicle, and the Kestrel engine of the Falcon 1 by SpaceX. The 1960s Sea Dragon concept by Robert Truax for a big dumb booster would have used pressure-fed engines.

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  • Ciclo de tanque presurizado (es)
  • Moteur-fusée alimenté par pressurisation des réservoirs (fr)
  • 가압식 사이클 (ko)
  • 圧送式サイクル (ja)
  • Pressure-fed engine (en)
  • Ciclo de tanque pressurizado (pt)
  • 挤压循环 (zh)
rdfs:comment
  • 圧送式サイクル（あっそうしきサイクル）またはガス押し式サイクル（ガスおししきサイクル）とは、ロケットエンジンの動作方式の1つである。推進剤タンクに別系統の高圧ガスを供給し、そのガス圧力で燃料と酸化剤を燃焼室に押し出す仕組みである。最も単純で、低コストな二液推進系ロケットエンジンの形式である。圧送用の高圧ガスには通常ヘリウムが用いられる。 (ja)
  • 가압식 사이클은 액체연료 로켓의 연료 공급 방식 중의 하나이다. 기체를 이용하여 추진체 탱크 안의 추진체를 연소기로 밀어내는 방식을 뜻한다. (ko)
  • O Ciclo de tanque pressurizado é um ciclo de produção de força num motor de foguete de combustível líquido. Nesse processo, os propelentes são impulsionados para as câmaras de combustão através da pressão aplicada nos tanques. A maior vantagem relativa a outros ciclos em motores de foguete, é sua simplicidade, pois não requer bombas nem sistemas de controle sofisticados. Nesse processo, um tanque adicional com gás pressurizado, geralmente hélio ou nitrogênio, libera o seu conteúdo para os tanques de propelente. A medida que a pressão dos tanques de propelentes aumenta, os propelentes são forçados para as câmaras de combustão.A maioria dos motores de controle de atitude e manobras orbitais fazem uso do Ciclo de tanque pressurizado. (pt)
  • 挤压循环（pressure-fed cycle）是液體火箭发动机动力循环的一种形式。推进剂受高压气体挤压，进入燃烧室。 挤压循环的优点就是避开了结构复杂的涡轮机，泵和输送管道。因为使用挤压循环可以大幅降低发动机成本和复杂度。其缺点就是产生的压力不够高，因而发动机效率不高。 美国的太空船常采用这种循环，如阿波罗飞船的服务舱发动机，登月舱发动机及其姿态控制发动机。 (zh)
  • El ciclo de tanques presurizados es una variante en los diseños de motor cohete. Un suministro de gas independiente, generalmente helio, a veces nitrógeno, presuriza los tanques de propergoles. Mientras la presión en los tanques sea superior a la de la cámara de combustión fluirá combustible y oxidante a la cámara de combustión. Este ciclo carece de turbobomba lo cual simplifica y abarata. En la década de 1960 el Sea Dragon, un proyecto de cohete de grandes dimensiones y sencillez, habría utilizado este sistema en sus motores. (es)
  • La pressurisation des réservoirs est une configuration moteur-fusée à ergols liquides dans laquelle un gaz inerte, généralement de l'hélium ou de l'azote, maintient une pression importante dans les réservoirs à ergols pour alimenter la chambre de combustion. La pression dans les réservoirs doit dépasser celle dans la chambre de combustion, ce qui impose que les réservoirs aient des parois suffisamment épaisses, et donc lourdes, pour résister à cette pression. (fr)
  • The pressure-fed engine is a class of rocket engine designs. A separate gas supply, usually helium, pressurizes the propellant tanks to force fuel and oxidizer to the combustion chamber. To maintain adequate flow, the tank pressures must exceed the combustion chamber pressure. Some launcher upper stages also use pressure-fed engines. These include the Aerojet AJ10 and TRW TR-201 used in the second stage of Delta II launch vehicle, and the Kestrel engine of the Falcon 1 by SpaceX. The 1960s Sea Dragon concept by Robert Truax for a big dumb booster would have used pressure-fed engines. (en)
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