Astra confirms it is buying Ursa Major rocket engines for its Rocket-4 upper stage
Astra yesterday confirmed that it will be buying Ursa Major’s Hadley rocket engine for the upper stage of its Rocket-4, now tentatively scheduled for a first test launch later this year.
Astra has been tight-lipped about the new upper stage engine that would power its new Rocket 4, with CEO Chris Kemp only telling investors last year that the rocket’s substantially increased payload capacity was thanks in part to engine upgrades. Outsourcing the engine helps clarify how Astra was able to so quickly pivot its plans for Rocket 4, including doubling the launch vehicle’s payload capacity from 300 kilograms to 600 kilograms.
Ursa Major has already sold engines to several rocket companies and the government, including Phantom, Vector, Stratolaunch, and the Air Force. It is also building two different larger engines, Ripley and Arroway, with the latter aimed at replacing the engines Russia provided to ULA and Northrop Grumman.
Astra yesterday confirmed that it will be buying Ursa Major’s Hadley rocket engine for the upper stage of its Rocket-4, now tentatively scheduled for a first test launch later this year.
Astra has been tight-lipped about the new upper stage engine that would power its new Rocket 4, with CEO Chris Kemp only telling investors last year that the rocket’s substantially increased payload capacity was thanks in part to engine upgrades. Outsourcing the engine helps clarify how Astra was able to so quickly pivot its plans for Rocket 4, including doubling the launch vehicle’s payload capacity from 300 kilograms to 600 kilograms.
Ursa Major has already sold engines to several rocket companies and the government, including Phantom, Vector, Stratolaunch, and the Air Force. It is also building two different larger engines, Ripley and Arroway, with the latter aimed at replacing the engines Russia provided to ULA and Northrop Grumman.