One of his more interesting builds is his series on building rocket engines out of PVC pipe written in conjunction with [Chuck Knight]. For the propellent grains, the PVC rocket didn’t use the ...

Ursa Major said it developed a new solid rocket motor from scratch in four months, and has now flown it twice in partnership with Raytheon. (Ursa Major) Raytheon and growing propulsion firm Ursa ...

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For this early prototype, power is solely from hobby rocket motors, providing thrust for 1.6 seconds, meaning flight times are necessarily short. The craft is launched from an aluminium profile ...

Join our newsletter to get the latest military space news every Tuesday by veteran defense journalist Sandra Erwin. WASHINGTON — Rocket propulsion startup Ursa Major announced Dec. 18 that one ...

(Rudy Ruitenberg/staff) PARIS — Pan-European missile maker MBDA bought the remaining 50% of rocket-engine supplier Roxel from co-owner Safran, in a move the company expects will help it ramp up ...