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The Kolibri Engine (called Grasshopper L.F. Engine until 1.5) is a small engine. The engine is the third smallest (2×3 units) and third lightest engine behind the RCS Thrusters and Ion Engine. The Kolibri is normally used on smaller rockets for landing on and ejecting from bodies with low gravity.

The flame produced by the Kolibri engine

The sound produced by the Kolibri engine

It produces a translucent purple flame with a shock diamond. The engine burns 5t of fuel in about 1.5 minutes. It has 89% the efficiency of a Hawk Engine, 80% the efficiency of a Valiant Engine and 159% the efficiency of RCS Thrusters. On Earth, it can lift 14.5 tons of weight.

Trivia

  • Its original name was likely a reference to SpaceX's test rocket Grasshopper.
  • Its current name means "hummingbird" in several European languages like Hungarian. Both grasshoppers and hummingbirds are small animals, alluding to its low size and thrust, so it is sometimes called as Grasshopper Engines.
  • This engine likely burns methalox (liquid methane and liquid oxygen), because methalox powered engines give off a purple flame.
  • If you put two of these engines on a 30t Fuel Tank, it will lift off without support.

History

Until it was renamed in 1.5, the Kolibri Engine was called the Grasshopper L.F. Engine, and emitted a blue-yellow flame.

Gallery

Pre-1.5 Kolibri Engine in action in space. The blue-yellow flame can be observed.

Close up of the current version

Parts
Basics ParachuteCapsuleHeat ShieldSeparatorFuel TanksHawk EngineValiant EngineKolibri EnginePeregrine EngineRCS ThrustersSide SeparatorSolid Rocket BoostersAerodynamic Nose ConeLanding Leg
6 Wide 6 Wide Aerodynamic Nose ConeFuel TanksSeparatorHeat ShieldEngine Base
8 Wide 8 Wide Aerodynamic Nose ConeFuel TanksSeparatorHeat ShieldEngine Base
10 Wide Fuel TanksSeparatorHeat ShieldEngine Base
12 Wide Fuel TanksSeparatorHeat ShieldEngine Base
Engines Titan EngineFrontier EngineHawk EnginePeregrine EngineValiant EngineKolibri EngineRCS ThrustersIon Engine
Aerodynamic Parts ParachuteSide ParachuteAerodynamic Nose ConeAerodynamic Fuselage
Fairings Fairing
Structural Structural Part
Other Docking PortLanding LegsIon EngineProbeRCS ThrustersWheelsSolar PanelFuel Pipe
Currently removed in Version 1.5
BatteryRTG
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