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

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{{:Kerbodyne KR-2L Advanced Engine/Box}}
 
{{: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 12.5% (at most) of this engine's thrust.
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The '''Kerbodyne KR-2L+ "Rhino" Liquid Fuel Engine''' is an [[Radial size|extra large]] [[liquid fuel engine]] which has high thrust and a high vacuum [[specific impulse]]. In atmosphere, its specific impulse is lower than other high thrust engines like the [[RE-M3 "Mainsail" Liquid Fuel Engine|Mainsail]]. But in vacuum, the Rhino's I<sub>sp</sub> matches the efficient [[T-1 Toroidal Aerospike "Dart" Liquid Fuel Engine|Dart]], and is only outdone by the [[LV-909 "Terrier" Liquid Fuel Engine|Terrier]], [[LV-N "Nerv" Atomic Rocket Motor|NERV]], and [[RE-L10 "Poodle" Liquid Fuel Engine|Poodle]], which have respectively just 3%, 3%, and 12.5% of the Rhino'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]].
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Unlike the [[S3 KS-25x4 "Mammoth" Liquid Fuel Engine|Mammoth]], which is the only engine with higher thrust, the Rhino has an attachment node on the bottom. This, along with its high vacuum I<sub>sp</sub> and thrust, makes the Rhino a very useful engine for high-mass upper stages.
  
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}}
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The ''KR-2L'' might be a reference to the [[w:J-2X|J-2X]], an upper stage engine that was intended for the cancelled [[w:Constellation Program|Constellation program]] and later proposed for the [[w:Space Launch System|Space Launch System]].
  
The fact that the [[S3 KS-25x4 "Mammoth" Liquid Fuel Engine]], although it is on part part in-game, is technically just four [[S3 KS-25 "Vector" Liquid Fuel Engine|Vector Engines]], and the [[LFB KR-1x2 "Twin-Boar" Liquid Fuel Engine]], while only one part in-game, is technically two KR-1 Engines, makes this engine technically the largest single engine in the game.
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Though each engine only counts as one part in-game, since the [[S3 KS-25x4 "Mammoth" Liquid Fuel Engine|Mammoth]] is composed of four [[S3 KS-25 "Vector" Liquid Fuel Engine|Vector]] engines, and the [[LFB KR-1x2 "Twin-Boar" Liquid Fuel Engine|Twin-Boar]] uses two KR-1 engines, the Rhino is technically the largest single engine in the game.
  
 
== Product description ==
 
== Product description ==

Latest revision as of 19:36, 3 October 2023

Kerbodyne KR-2L+ "Rhino" Liquid Fuel Engine
Part image
Liquid fuel engine by
Kerbodyne

Radial size Extra large
Cost (total) 25 000.00 Funds
Mass (total) 9.00 t
Drag 0.2
Max. Temp. 2000 K
Volume  ?
Impact Tolerance 7 m/s
Research Tech tree very heavy rocketry.png Very Heavy Rocketry
Unlock cost 68 000 Funds
Since version 0.23.5
Part configuration part.cfg
Liquid fuel engine
Maximum thrust (1 atm) 1 205.88 kN
(vacuum) 2 000.00 kN
Isp (1 atm) 205 s
(vacuum) 340 s
Fuel consumption 119.97 Units of fuel/s


Thrust vectoring 4 °
Testing Environments
On the surface Yes
In the ocean Yes
On the launchpad Yes
In the atmosphere Yes
Sub orbital Yes
In an orbit Yes
On an escape Yes
Docked No
Test by staging Yes
Manually testable Yes

The Kerbodyne KR-2L+ "Rhino" Liquid Fuel Engine is an extra large liquid fuel engine which has high thrust and a high vacuum specific impulse. In atmosphere, its specific impulse is lower than other high thrust engines like the Mainsail. But in vacuum, the Rhino's Isp matches the efficient Dart, and is only outdone by the Terrier, NERV, and Poodle, which have respectively just 3%, 3%, and 12.5% of the Rhino's thrust.

Unlike the Mammoth, which is the only engine with higher thrust, the Rhino has an attachment node on the bottom. This, along with its high vacuum Isp and thrust, makes the Rhino a very useful engine for high-mass upper stages.

The KR-2L might be a reference to the J-2X, an upper stage engine that was intended for the cancelled Constellation program and later proposed for the Space Launch System.

Though each engine only counts as one part in-game, since the Mammoth is composed of four Vector engines, and the Twin-Boar uses two KR-1 engines, the Rhino is technically the largest single engine in the game.

Product description

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.

Kerbodyne

Changes

1.2
  • Specific impulse at sea level decreased from 255 to 205.
1.0.3
  • Cost increased from 21000 to 25000, mass increased from 8.5 to 9, specific impulse at sea level increased from 170 to 255.
0.24
  • Cost increased from 2850 to 20850 (and made meaningful)
0.23.5
  • Initial release