AFRL, NASA and Masten Test Liquid Methane Rocket Engine

The U.S. Air Force Research Laboratory (AFRL), NASA’s Space Technology Mission Directorate (STMD), and Masten Space Systems Inc. successfully tested a liquid methane rocket engine, the first of its kind tested at AFRL.

AFRL and Masten signed a Cooperative Research and Development Agreement (CRADA) in December 2018. The agreement enabled Masten to test the Broadsword 25K engine at AFRL’s rocket testing facility at Edwards Air Force Base in Test Area 1-125 and complete NASA’s Tipping Point contract requirement of a ten-second hot fire test.

The Broadsword 25K engine required a large supply of high-pressure gaseous nitrogen to pressure feed their engine. AFRL’s Aerospace Systems Directorate (AFRL/RQ) and their Rocket Propulsion Division at Edwards AFB has the capability at Test Area 1-125 to deliver a large supply of high-pressure gaseous nitrogen.

The hot fire campaign started in July 2019 with four hot fire tests before the final test of 10 seconds of combustion. These hot fire tests validated the tune ignition and start-up transients of the engine. The culmination of testing ended Dec. 10, 2019, when Masten completed their Broadsword 25K engine test of 10 seconds of steady-state combustion. The success of these hot fire tests validated Broadsword’s startup transient and steady-state performance with the new technology developed under the Tipping Point program.

“Working on the 25K Broadsword Tipping Point has been a wonderful project,” said Matthew Kuhns, chief engineer at Masten Space Systems and principle investigator on Tipping Point. “The successful hot fire testing paves the way for exciting new high performance rocket engine designs,” he added.

“The Rocket Propulsion Division is leveraging our existing research and development test capabilities by partnering with new and non-traditional defense contractors in order to accelerate speed of discovery,” said Julie Carlile, deputy chief, Rocket Propulsion Division. “Collaborating with Masten provided this opportunity utilizing our established propulsion testing infrastructure to assist the commercial space sector’s emerging small launch capabilities and lunar science missions,” she said.



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