The Space Launch
System hydraulic power and control system is based upon heritage systems from
the Space Shuttle. The auxiliary power unit (APU) from Space Shuttle has been
modified to use cold fuel to spin a turbine. In turn, the system drives a
hydraulic pump and with controls, provides the hydraulic fluid to the thrust
vector control actuators for the Core Stage. Space Systems provides the APU and
hydraulic components to Boeing for the SLS Core Stage.
A similar system
is used for the baseline solid rocket booster, but is driven with hydrazine
through a catalyst bed to provide the turbine power. This system is provided to
The Turbine Pump
Assembly (TPA) on each United Launch Alliance (ULA) Delta IV Common Booster
Core (CBC) uses cold fuel turbine system to drive a hydraulic pump. In a
similar fashion, the hydraulic fluid is then provided. We provide a TPA for each Delta IV CBC.
continues to also investigate future means of electric power supply for more
electric thrust vector control systems