Difference between revisions of "J-2X (Engine)"

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The '''J-2X''' is a modern [[expander cycle]], [[bi-propellant]] [[rocket engine]], planned for use in the [[Ares I]] and [[Ares V]] [[launch vehicles]]. It consumes [[liquid hydrogen]] and [[liquid oxygen]]. It has its origin in the [[J-2 (Engine)|J-2]] rocket engines used by the [[Saturn Ib]] and [[Saturn V]] launchers. It is produced by [[Rocketdyne]].
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The '''J-2X''' is a modern [[gas-generator cycle]], [[bi-propellant]] [[rocket engine]], planned for use in the [[Ares I]] and [[Ares V]] [[launch vehicles]]. It consumes [[liquid hydrogen]] and [[liquid oxygen]]. It has its origin in the [[J-2 (Engine)|J-2]] rocket engines used by the [[Saturn Ib]] and [[Saturn V]] launchers. It is produced by [[Pratt & Whitney Rocketdyne]].
  
==Differences to the J-2==
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<!-- ==Differences to the J-2==
 
[[Image:J2X_schematic.gif|thumb|right|Schematic of the J-2X]]
 
[[Image:J2X_schematic.gif|thumb|right|Schematic of the J-2X]]
While the J-2 was a [[gas-generator cycle]] or open cycle rocket engine, the '''J-2X''' uses so called [[tap-off cycle]] for powering its [[turbopumps]]. In such a cycle, a small part of the hot exhaust gases from the [[combustion chamber]] is used for powering the two turbopump assemblies. these turbopumps are connected in series with a hot-gas duct. After passing the oxidizer turbopump, the hot gases are directed into the nozzle exhaust stream.
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While the J-2 was a [[gas-generator cycle]] or open cycle rocket engine, the '''J-2X''' uses so called [[tap-off cycle]] for powering its [[turbopumps]]. In such a cycle, a small part of the hot exhaust gases from the [[combustion chamber]] is used for powering the two turbopump assemblies. these turbopumps are connected in series with a hot-gas duct. After passing the oxidizer turbopump, the hot gases are directed into the nozzle exhaust stream. -->
  
 
==References==
 
==References==
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*[http://www.nasa.gov/pdf/187393main_j-2x_fact_sheet.pdf J-2X fact sheet from NASA (2.9 MB)]
 
*[http://www.nasa.gov/pdf/187393main_j-2x_fact_sheet.pdf J-2X fact sheet from NASA (2.9 MB)]
  
[[Category:rocket engines]]
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[[Category: Articles]]
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[[Category:Rocket engines]]
 
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Latest revision as of 12:12, 14 October 2022

The J-2X is a modern gas-generator cycle, bi-propellant rocket engine, planned for use in the Ares I and Ares V launch vehicles. It consumes liquid hydrogen and liquid oxygen. It has its origin in the J-2 rocket engines used by the Saturn Ib and Saturn V launchers. It is produced by Pratt & Whitney Rocketdyne.


References[edit]

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