LE-9 (original) (raw)
Le LE-9 est un moteur-fusée à ergols liquides japonais brûlant de l'hydrogène liquide et de l'oxygène liquide dans un cycle à expandeur. Sa poussée est de 1 471 kN dans le vide et son impulsion spécifique est de 426 secondes. Il est développé par Mitsubishi Heavy Industries. Deux ou trois exemplaires doivent propulser le premier étage du futur lanceur japonais H3, dont le premier vol est prévu pour 2020.
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|---|---|
| dbo:abstract | The LE-9 is a liquid cryogenic rocket engine burning liquid hydrogen and liquid oxygen in an expander bleed cycle. Two or three will be used to power the core stage of the H3 launch vehicle. The newly developed LE-9 engine is the most important factor in achieving cost reduction, improved safety and increased thrust. The expander bleed cycle used in the LE-9 engine is a highly reliable combustion method that Japan has put into practical use for the LE-5A/B engine. However, it is physically difficult for an expander bleed cycle engine to generate large thrust, so the development of the LE-9 engine with a thrust of 1,471 kN (331,000 lbf) is the most challenging and important development element. Firing tests of the LE-9 first-stage engine began in April 2017. On 21 January 2022, the launch of the first H3 was rescheduled to FY 2022 or later, citing technical problems regarding the first stage LE-9 engine. (en) Le LE-9 est un moteur-fusée à ergols liquides japonais brûlant de l'hydrogène liquide et de l'oxygène liquide dans un cycle à expandeur. Sa poussée est de 1 471 kN dans le vide et son impulsion spécifique est de 426 secondes. Il est développé par Mitsubishi Heavy Industries. Deux ou trois exemplaires doivent propulser le premier étage du futur lanceur japonais H3, dont le premier vol est prévu pour 2020. (fr) LE-9は、宇宙航空研究開発機構（JAXA）が三菱重工業とIHIと共に開発中のH3ロケットの第1段用液体燃料ロケットエンジンで、世界初の第1段用の大推力エキスパンダーブリードサイクルエンジン。燃料に液体水素、酸化剤に液体酸素を使用し、H3ではペイロードの重量や投入軌道に合わせてLE-9を2基又は3基にクラスター化して用いる。「キー技術関連事業者」として三菱重工業がエンジンシステムを、IHIがターボポンプの開発を担当している。 (ja) |
| dbo:wikiPageExternalLink | http://www.mhi-global.com/products/category/rocket_engines.html |
| dbo:wikiPageID | 47190916 (xsd:integer) |
| dbo:wikiPageLength | 6386 (xsd:nonNegativeInteger) |
| dbo:wikiPageRevisionID | 1110673575 (xsd:integer) |
| dbo:wikiPageWikiLink | dbr:LE-5 dbr:LE-7A dbr:Mitsubishi_Heavy_Industries dbr:Cryogenic_rocket_engine dbc:Rocket_engines_using_the_expander_cycle dbr:Liquid_hydrogen dbc:Rocket_engines_of_Japan dbr:Liquid_oxygen dbr:JAXA dbr:Japan dbc:Rocket_engines_using_hydrogen_propellant dbr:LE-7 dbr:Expander_cycle_(rocket) dbr:H3_Launch_Vehicle dbr:Expander_cycle dbr:Rocket_engine dbr:Liquid-fuel_rocket dbr:Japanese_fiscal_year |
| dbp:associated | dbr:H3_Launch_Vehicle |
| dbp:caption | LE-9 (en) |
| dbp:combustionChamber | 1 (xsd:integer) |
| dbp:countryOfOrigin | dbr:Japan |
| dbp:cycle | dbr:Expander_cycle_(rocket) |
| dbp:designer | dbr:JAXA |
| dbp:fuel | dbr:Liquid_hydrogen |
| dbp:length | 3.8 m (en) |
| dbp:manufacturer | dbr:Mitsubishi_Heavy_Industries |
| dbp:mixtureRatio | 5.900000 (xsd:double) |
| dbp:name | LE-9 (en) |
| dbp:nozzleRatio | 37 (xsd:integer) |
| dbp:oxidiser | dbr:Liquid_oxygen |
| dbp:predecessor | dbr:LE-7A |
| dbp:purpose | sustainer engine (en) |
| dbp:status | In Development (en) |
| dbp:thrustToWeight | 62.500000 (xsd:double) |
| dbp:type | liquid (en) |
| dbp:usedIn | H3 Launch Vehicle core stage. (en) |
| dbp:wikiPageUsesTemplate | dbt:Convert dbt:Cvt dbt:Infobox_rocket_engine dbt:Reflist dbt:Rocket-stub dbt:Rocket_engines dbt:Short_description |
| dct:subject | dbc:Rocket_engines_using_the_expander_cycle dbc:Rocket_engines_of_Japan dbc:Rocket_engines_using_hydrogen_propellant |
| gold:hypernym | dbr:Hydrogen |
| rdf:type | dbo:MeanOfTransportation |
| rdfs:comment | Le LE-9 est un moteur-fusée à ergols liquides japonais brûlant de l'hydrogène liquide et de l'oxygène liquide dans un cycle à expandeur. Sa poussée est de 1 471 kN dans le vide et son impulsion spécifique est de 426 secondes. Il est développé par Mitsubishi Heavy Industries. Deux ou trois exemplaires doivent propulser le premier étage du futur lanceur japonais H3, dont le premier vol est prévu pour 2020. (fr) LE-9は、宇宙航空研究開発機構（JAXA）が三菱重工業とIHIと共に開発中のH3ロケットの第1段用液体燃料ロケットエンジンで、世界初の第1段用の大推力エキスパンダーブリードサイクルエンジン。燃料に液体水素、酸化剤に液体酸素を使用し、H3ではペイロードの重量や投入軌道に合わせてLE-9を2基又は3基にクラスター化して用いる。「キー技術関連事業者」として三菱重工業がエンジンシステムを、IHIがターボポンプの開発を担当している。 (ja) The LE-9 is a liquid cryogenic rocket engine burning liquid hydrogen and liquid oxygen in an expander bleed cycle. Two or three will be used to power the core stage of the H3 launch vehicle. The newly developed LE-9 engine is the most important factor in achieving cost reduction, improved safety and increased thrust. The expander bleed cycle used in the LE-9 engine is a highly reliable combustion method that Japan has put into practical use for the LE-5A/B engine. However, it is physically difficult for an expander bleed cycle engine to generate large thrust, so the development of the LE-9 engine with a thrust of 1,471 kN (331,000 lbf) is the most challenging and important development element. (en) |
| rdfs:label | LE-9 (fr) LE-9 (en) LE-9 (ja) |
| owl:sameAs | yago-res:LE-9 wikidata:LE-9 dbpedia-fr:LE-9 dbpedia-ja:LE-9 https://global.dbpedia.org/id/BB5u |
| prov:wasDerivedFrom | wikipedia-en:LE-9?oldid=1110673575&ns=0 |
| foaf:isPrimaryTopicOf | wikipedia-en:LE-9 |
| is dbo:wikiPageWikiLink of | dbr:LE-5 dbr:Comparison_of_orbital_rocket_engines dbr:H3_(rocket) dbr:LE-7 dbr:Expander_cycle |
| is foaf:primaryTopic of | wikipedia-en:LE-9 |