Spaceflight Simulator Wiki
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Heat Shields are parts that protect a rocket from the intense heat during re-entry. They come in sizes from 4-wide to 12-wide and have a heat tolerance of 6000 degrees Celsius or about 10,800 degrees Fahrenheit. The 4-wide one is free.

They also help prevent unwanted spacecraft rotation during re-entry. This is because the air flows around the rocket, rather than bunching up and pushing on one side of the rocket.

Trivia

  • There was a bug that if you place a Heat Shield on a Fairing/Fairing Cone, it will adapt to the fairing. Also, if you select the fairing (cone), they won't clip. This was fixed in a later update.
  • Actually, it could withstand 6180 degrees Celsius (11150 Fahrenheit), until it eventually breaks up.
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
Removed in older versions
Probe (Large)Fairing AdapterAdapter
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