The LR87 was an American liquid-propellant rocket engine, which was used on the first stages of Titan intercontinental ballistic missiles and launch vehicles. Composed of twin motors with separate combustion chambers and turbopump machinery, it is considered a single unit. The LR87 first flew in 1959.

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dbo:abstract
  • LR-87はタイタン大陸間弾道ミサイルと衛星打ち上げロケットの1段目に使用された液体燃料ロケットエンジンである。この強力なエンジンは一見したところ2基のエンジンが束ねてあるように見えるが、実際には2基が1組として共に作動する。LR-87の最初の打ち上げは1959年である。タイタンロケットの歴史はLR-87エンジンと共にあったといっても過言ではなく、現時点においてタイタンIVロケットの引退後は使用されていない。 (ja)
  • O LR-87, foi um motor de foguete de alta performance, movido a combustíveis líquidos, fabricado nos Estados Unidos. Foi usado no primeiro estágio dos foguetes Titan. Apesar desse motor possuir duas câmaras de combustão, era considerado apenas um motor com um único conjunto de mecanismos e turbo bombas alimentando as duas câmaras de combustão, de maneira semelhante ao motor Russo RD-170, desenvolvido na Rússia pela NPO Energomash. Esse motor, foi desenvolvido no final da década de 50, pela Aerojet. Foi o primeiro motor de foguete produzido a nível mundial,com a capacidade de (com modificações), de fazer uso das três combinações de propelentes mais populares naquela época. * LOX e RP-1 * LOX e LH2 * Aerozine 50 e NTO O motor LR-87, serviu de base para o motor LR-91, usado no segundo estágio dos foguetes Titan.Ele era um motor de empuxo fixo (733 kN), que não podia ter a sua potência alterada ou ser desligado e religado durante o voo. (pt)
  • The LR87 was an American liquid-propellant rocket engine, which was used on the first stages of Titan intercontinental ballistic missiles and launch vehicles. Composed of twin motors with separate combustion chambers and turbopump machinery, it is considered a single unit. The LR87 first flew in 1959. The LR87 was developed in the late 1950s by Aerojet. It was the first production rocket engine capable (in its various models) of burning the three most common liquid rocket propellant combinations: liquid oxygen/RP-1, nitrogen tetroxide/Aerozine 50 (a 50/50 mixture by mass of hydrazine and UDMH), and liquid oxygen/liquid hydrogen. The engine operated on an open gas-generator cycle and utilized a regenerative cooled nozzle and combustion chamber. Later versions had additional ablative-cooled flanges. The LR87 served as a template for the LR-91, which was used in the second stage of the Titan missile. It was a fixed-thrust engine, which could not be throttled or restarted in flight. The LR87 delivered approximately 1,900 kilonewtons (430,000 pounds) of thrust. Early LR87 engines used on the Titan I burned RP-1 and liquid oxygen. Because liquid oxygen is cryogenic, it could not be stored in the missile for long periods of time, and had to be loaded before the missile could be launched. For the Titan II, the engine was converted to use Aerozine-50 and nitrogen tetroxide, which are hypergolic and storable at room temperature. This allowed Titan II missiles to be kept fully fueled and ready to launch on short notice. (en)
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dbo:wikiPageExternalLink
dbo:wikiPageID
  • 24888729 (xsd:integer)
dbo:wikiPageRevisionID
  • 741590803 (xsd:integer)
dbp:caption
  • XLR87 Rocket Engine
dbp:chamberPressure
  • 40 (xsd:integer)
dbp:countryOfOrigin
dbp:cycle
dbp:diameter
  • 1.14 m
dbp:dryWeight
  • 839.0
dbp:firstFlight
  • 1959 (xsd:integer)
dbp:fuel
  • LR87-3: RP-1/LOXLR87-5, LR87-7, LR87-9, LR87-11: Aerozine 50/N2O4LR87 LH2: LH2/LOX
dbp:imageSize
  • 200 (xsd:integer)
dbp:lastYear
  • 2005 (xsd:integer)
dbp:length
  • 3.130000 (xsd:double)
  • 240.0
dbp:manufacturer
dbp:name
  • LR87
dbp:purpose
  • Titan Main engine
dbp:successor
  • D LR-91
dbp:thrust(sl)_
  • LR87-3:647 kN
dbp:thrust(vac)_
  • 733 kN
dbp:type
  • liquid
dct:subject
http://purl.org/linguistics/gold/hypernym
rdf:type
rdfs:comment
  • LR-87はタイタン大陸間弾道ミサイルと衛星打ち上げロケットの1段目に使用された液体燃料ロケットエンジンである。この強力なエンジンは一見したところ2基のエンジンが束ねてあるように見えるが、実際には2基が1組として共に作動する。LR-87の最初の打ち上げは1959年である。タイタンロケットの歴史はLR-87エンジンと共にあったといっても過言ではなく、現時点においてタイタンIVロケットの引退後は使用されていない。 (ja)
  • O LR-87, foi um motor de foguete de alta performance, movido a combustíveis líquidos, fabricado nos Estados Unidos. Foi usado no primeiro estágio dos foguetes Titan. Apesar desse motor possuir duas câmaras de combustão, era considerado apenas um motor com um único conjunto de mecanismos e turbo bombas alimentando as duas câmaras de combustão, de maneira semelhante ao motor Russo RD-170, desenvolvido na Rússia pela NPO Energomash. * LOX e RP-1 * LOX e LH2 * Aerozine 50 e NTO (pt)
  • The LR87 was an American liquid-propellant rocket engine, which was used on the first stages of Titan intercontinental ballistic missiles and launch vehicles. Composed of twin motors with separate combustion chambers and turbopump machinery, it is considered a single unit. The LR87 first flew in 1959. (en)
rdfs:label
  • LR-87 (ja)
  • LR-87 (motor de foguete) (pt)
  • LR-87 (en)
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