RL10 hotfire test
A 3D-printed thrust chamber for the RL10 engine undergoes a hotfire test. Aerojet Rocketdyne plans to use technologies like additive manufacturing in the development of the RL10C-X engine, which is now supported by a revised agreement with the Air Force.

Aerojet Rocketdyne and the U.S. Air Force have revised an existing agreement supporting development of a new large rocket engine to include work on an updated version of an upper stage engine.

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Jeff Foust has more than a decade of experience writing about space policy, entrepreneurial ventures and regulatory affairs. In 2001, he established spacetoday.net to aggregate and summarize the day's space-related news stories. In 2003, he started The...