LV-1R "Spider" Liquid Fuel Engine

From Kerbal Space Program Wiki
(Redirected from LV-1R Liquid Fuel Engine)
Jump to: navigation, search
LV-1R "Spider" Liquid Fuel Engine
Part image
Liquid fuel engine by
Jebediah Kerman's Junkyard and Spacecraft Parts Co

Radial size Radial mounted
Cost (total) 120.00 Funds
Mass (total) 0.02000 t
Drag 0.2
Max. Temp. 2000 K
Volume  ?
Impact Tolerance 7 m/s
Research Precision propulsion.png Precision Propulsion
Unlock cost 1 750 Funds
Since version 0.21
Part configuration liquidEngineLV-1R.cfg
Liquid fuel engine
Maximum thrust (1 atm) 1.79 kN
(vacuum) 2.00 kN
Isp (1 atm) 260 s
(vacuum) 290 s
Fuel consumption 0.14 Units of fuel/s

Thrust vectoring 10 °
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 LV-1R "Spider" Liquid Fuel Engine is a radially mounted liquid fuel engine.

It is one of the lowest-thrust engines in the game, tied with the LV-1 "Ant" Liquid Fuel Engine and the IX-6315 "Dawn" Electric Propulsion System ion engine.

Product description

Adapted to appease engineers who were outraged at the puniness of the LV-1, the radial mounted LV-1R offers an appealing solution: "Just add more". Point away from face.

Jebediah Kerman's Junkyard and Spacecraft Parts Co


The Spider is the radial version of the LV-1 "Ant" Liquid Fuel Engine, with similar designs and vacuum thrust. Unlike the Ant, the Spider has a much higher atmospheric Isp, and a lower vacuum Isp. In addition, the Spider is capable of thrust vectoring.

Spider engines are less efficient than Ant engines in vacuum. However, the Spider's thrust vectoring allows a probe powered by Spider engines to forgo a reaction wheel, reducing dry mass.


As of version 1.7 this engine has two models that can be switched in the editor.

Shroud variant
Bare variant
The different variants of the engine


  • New model and texture
  • Added 2 variants
  • Gimbal increased from 8° to 10°.
  • Cost increased from 150 to 650 (and made meaningful)
  • Thrust increased from 1.5 to 4 kN.
  • Initial release