LV-T45 "Swivel" Liquid Fuel Engine

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LV-T45 "Swivel" Liquid Fuel Engine
Part image
Liquid fuel engine by
Jebediah Kerman's Junkyard and Spacecraft Parts Co

Radial size Small
Cost (total) 1 200.00 Funds
Mass (total) 1.50 t
Drag 0.2
Max. Temp. 2000 K
Volume  ?
Impact Tolerance 7 m/s
Research Basic rocketry.png Basic Rocketry
Unlock cost 3 500 Funds
Since version 0.12
Part configuration liquidEngineLV-T45.cfg
Liquid fuel engine
Maximum thrust (1 atm) 167.97 kN
(vacuum) 215.00 kN
Isp (1 atm) 250 s
(vacuum) 320 s
Fuel consumption 13.70 Units of fuel/s

Thrust vectoring 3 °
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-T45 Liquid Fuel Engine is an engine which requires fuel from external liquid fuel tanks, and must be either connected beneath them or be on the receiving end of a fuel line.


The LV-T45 was the first liquid fuel engine with thrust vector control, that allows efficient control of the rocket when it is most needed - during ascent and orbit correction burns. Despite having the same specific impulse as the LV-T30 Liquid Fuel Engine, the more complex LV-T45 has slightly less thrust resulting in a longer burn time at the same fuel amount. Parallel ignition of several LV-T30 and LV-T45 engines at lift-off can lead to maximized thrust without losing control.

However, the LV-T45 has a mass of 1.5 tons and as said before, less thrust compared to the LV-T30, which masses 1.25 tons. This means a worse TWR.

Like LV-T30, the LV-T45 cannot be placed on radial decouplers and are typically reserved as a main engine after lift-off. The LV-T45 must be directly below a non-empty fuel tank to produce any thrust.


The LV-T45 engine was considered another breakthrough in the LV-T series, due to its Thrust Vectoring feature. The LV-T45 can deflect its thrust to aid in craft control. All these added mechanics however, make for a slightly smaller and less powerful engine in comparison with earlier LV-T models.

Jebediah Kerman's Junkyard and Spaceship Parts Co.

Pre-0.18 appearance

Created by: Mrbrownce


  • Retextured
  • Initial Release