Ursa Major to supply upper-stage engine for Astra’s new rocket

WASHINGTON — Rocket propulsion startup Ursa Major announced April 24 that Astra Space selected the company’s Hadley liquid engine to power the upper stage of its new Rocket 4 launch vehicle.

Ursa Major is a Colorado-based manufacturer of liquid engines for small space launchers and hypersonic vehicles. The company said it is producing about 30 Hadley engines a year for the U.S. Air Force and several commercial customers, including small launcher startup Phantom Space and Stratolaunch.

“The Ursa Major-Astra partnership marks an important industry milestone in…

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News Source: spacenews.com


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