Difference between revisions of "Kerbodyne KR-2L+ "Rhino" Liquid Fuel Engine"

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{{:Kerbodyne KR-2L Advanced Engine/Box}}
The '''Kerbodyne KR-2L+ "Rhino" Liquid Fuel Engine''' is an extra large [[liquid fuel engine]] which has a high [[specific impulse]] compared to the thrust. While the specific impulse is lower than the [[Rockomax "Mainsail" Liquid Engine]] in atmosphere, the I<sub>sp</sub> in vacuum is higher than most of the engines, including the Mainsail and [[Rockomax "Skipper" Liquid Engine]]. Only the [[LV-N Atomic Rocket Motor]], [[Toroidal Aerospike Rocket]], [[LV-909 Liquid Fuel Engine]] and [[Rockomax "Poodle" Liquid Engine]] are more efficient, but only have 10% (at most) of this engine's thrust.
The ''KR-2L'' might be a reference to the [[w:J-2X|J-2X]], a planned upper stage engine for [[w:Space Launch System|Space Launch System]].
This, and the fact that it allows attaching parts on both sides of the engine, make it a very useful engine for high-mass upper stages. Especially because the [[S3 KS-25x4 Engine Cluster]] is the only other extra large engine in [[0.25]] but doesn't allow attaching parts below the engine. It has the second-highest vacuum thrust of all engines available, after the [[S3 KS-25x4 "Mammoth" Liquid Fuel Engine]] and tied with the [[LFB KR-1x2 "Twin-Boar" Liquid Fuel Engine]], though the Twin-Boar has better atmospheric thrust.{{Check version||1.0.4}}
== Product description ==
{{Quote|This engine is Kerbodyne's first attempt at a highly advanced engine. The engineers couldn't get it to produce full efficiency at sea level without the engine exploding, so it was repurposed as an upper stage engine. The experience gained here with high efficiency has been repurposed for later models, which feature multiple combustion chambers at higher pressure (that don't go boom). This engine is optimized for lighting mid-flight, although it still provides respectable power at sea level.|manufacturer=KD}}
== Changes ==
* Specific impulse at sea level decreased from 255 to 205.
* Cost increased from 21000 to 25000, mass increased from 8.5 to 9, specific impulse at sea level increased from 170 to 255.
* Cost increased from 2850 to 20850 (and made meaningful)
*Initial release
[[Category:Liquid fuel engines]]

Revision as of 18:12, 17 March 2017