Advanced Reaction Wheel Module, Large

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Revision as of 22:07, 9 November 2014 by GregroxMun (talk | contribs) (Added some (important?) details about the peculiarity of the ASAS module and the SAS/ASAS history.)
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Advanced Reaction Wheel Module, Large
Part image
Stability Augmentation System by
STEADLER Engineering Corps
Radial size Large
Cost (total) 2 100.00 Funds
Mass (total) 0.20 t
Drag 0.2
Max. Temp. 2000 K
Impact Tolerance 9 m/s
Research Tech tree large control.png Specialized Control
Unlock cost 11 600 Funds
Since version 0.17.0
Part configuration advancedSasModuleLarge
Pitch torque 30.0 kN·m
Yaw torque 30.0 kN·m
Roll torque 30.0 kN·m
Electricity required for torque
SAS level × None

The Advanced S.A.S Module, Large is a large diameter reaction wheel meant to stabilize and help keep a rocket on course. Since virtually every command pod in the game already provides SAS, the torque is what will interest most players. Extra torque means that the player's spaceship will rotate faster when ordered to, resulting in a more nimble feel to the craft. The Advanced S.A.S Module, Large is the size 2 reaction wheel. It is expensive, relatively heavy, and provides a very large amount of torque compared to the other reaction wheels.

This module was previously used for ASAS module functionality, hence it's name. It was never meant to produce any torque, it was only meant to function as a computer unit, a sort of autopilot to keep the ship on course. Since 0.21, it has been changed into a reaction wheel. There are several problems with this, however. The reaction wheel is still totally hollow, so there doesn't seem to be any way for the module to actually generate torque. The KSPX mod, from which several parts were implemented from 0.19 to 0.20, includes a solid "SAS module, large". Unfortunately, the mod's developer left Squad before the SAS redesign, so her mod could not be implemented.

Product description

After many years of research, STEADLER Corps rocket scientists discovered that Kerbal crewmembers just can't be trusted to keep a spacecraft under control. The Advanced S.A.S Module adresses that issue by correcting flight controls continuously. It is highly recommended that crewmembers are kept unaware of the presence of such a device, as experience shows that many Kerbals will see that as a 'challenge to their flying prowess'.

Before the SAS was redesigned, both Advanced SAS Module (now the [[Advanced Inline Stabilizer]) and the Advanced SAS Module, Large both functioned similarly, with the only difference being the PID values and dimensions. They still function similarly, however the description seems to indicate that the ASAS, Large works as an old ASAS module instead of a reaction wheel. This may confuse older players who are returning to the game.

did the same thing the description said the following:
A larger-scale version of the original STEADLER ASAS module.

STEADLER Engineering Corps


  • Torque increased from 20 to 30
  • Cost reduced from 2200 to 2100
  • Reduced mass from 0.5 to 0.2 tons.
  • Added torque
  • This part only adds SAS functionality now (no torque)
  • (Undocumented) Mass reduced from 0.8 to 0.5 tons.
  • Initial Release