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Reliable Ignition of LOX Methane Propellants in Thermal Vacuum Environment

Completed TRL 5 (started at 4, targeting 5)

Description

Lunar and Mars missions require Earth-delivered or ISRU-generated cryogenic propellants. Fast-pulse reaction control systems (RCS), haven’t proven reliable ignition. This work will buy down risk by characterizing HLS- & CLPS-class cryogenic RCS ignition systems

Benefits

Cryogenic propellant systems are considered essential for NASA future human exploration missions1,2, particularly beyond lunar landings (in-situ resource utilization (ISRU), high specific impulse, reduced heating requirements once in space). No cryogenic reaction control system (RCS) has ever flown in space. In previous thermal-vacuum (<-275°F) testing at NASA GRC Plum Brook, the team uncovered anomalous LO2/LCH4 engine ignition phenomena where flame kernels quenched at these ultra-cold hardware temperatures, leading to many pluses where the engines would not light. This work is vital because when the RCEs fire is commanded, and misfires or no-lights this could result in catastrophic vehicle failure. No known complementary projects or efforts are currently underway.

Details

Technology areaPropulsion Systems > Chemical Space Propulsion > Cryogenic Propulsion
ProgramCenter Innovation Fund: JSC CIF (JSC CIF)
Lead organizationJohnson Space Center, Houston, TX
Start date2021-10-01
End date2022-09-30

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