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

Revision as of 05:07, 5 November 2007

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 and Whitney Rocketdyne.

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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]].
+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 and Whitney Rocketdyne]].
 ==Differences from the J-2==
-[[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.
 [[Category:rocket engines]]
 {{Stub}}