Vernor Engine

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Vernor Engine
Part image
by
Reaction Systems Ltd

Radial size Radial mounted
Cost (total) 150.00 Funds
Mass (total) 0.08 t [N 1]
Drag 0.01 [N 1]
Max. Temp. 2000 K
Volume  ?
Impact Tolerance 15 m/s
Research Tech tree large control.png Specialized Control
Unlock cost 1 800 Funds
Since version 0.24
Part configuration vernorEngine.cfg
Maximum thrust (1 atm) 6.46 kN
(vacuum) 12.00 kN
Isp (1 atm) 140 s
(vacuum) 260 s
Fuel consumption 0.94 Units of fuel/s


Thrust vectoring No
Thrust vectors 1 (zenith)

  1. 1.0 1.1 The mass and drag are from the part config, but the game handles it as physicsless.

The Vernor Engine (officially known as the VR-N1ER Veer-Governor in the product description) is a RCS thruster used for craft rotation and translation. Unlike other RCS thrusters, it is fueled by liquid fuel and oxidizer.

Although it uses rocket fuel, it is not a reaction engine.

Product description

The VR-N1ER Veer-Governor, or "Vernor" Engine is an attitude control thruster. These motors are linked to RCS controls, but are powered by a Fuel+Oxidizer mix, making them significantly more powerful than MonoPropellant-powered RCS thrusters. They are fairly more bulky in comparison though, and feature only one nozzle facing outwards, although most agree that is an acceptable trade-off for the additional punch they pack.

Reaction Systems Ltd

Usage

Compared to the other two RCS engines previously available, this new engine has a higher specific impulse in atmosphere which makes them suitable to steer heavy craft while ascending. The thrust is also 12 times higher than one RCS port which allows only a few thrusters to stabilize the craft. Because it uses liquid fuel and oxidizer the same fuel flow logic applies. Thus the part needs to be connected to a tank either directly or by a fuel transferring part.

Although it uses a different fuel, the Vernor Engine acts identically to monopropellant-based RCS ports, like the Place-Anywhere 7 Linear RCS Port.

Despite the listed mass, the part has the "PhysicsSignificance = 1" flag, making it a physicsless part; its mass and drag are added to the part it is mounted on.

Trivia

  • The name seems to be a play on Vernier thruster which are used in real life like this part to control the craft.

Changes

1.7
  • New model and texture
  • entryCost decreased from 4200 to 1800
  • Cost decreased cost from 1400 to 150
  • Tolerance decreased cost from 50 to 15
0.24
  • Initial release

References