Universal Rocket Module

Universal Rocket Module (URM) is the modular liquid fuelled first stage of the Angara expendable launch system. Depending on configuration, the first stage can consist of 1, 3, 5 or 7 URMs. The URM is a unitary structure 3 meters in diameter and 25 meters in length that includes an oxidizer tank, a fuel tank (both tanks being coupled by a spacer) and a propulsion bay. Each URM uses Russian-made RD-191 engine burning RP-1 fuel with liquid oxygen producing a thrust of 1.92 MN.

The Naro-1 launch vehicle is based on the Universal Rocket Module with the de-rated RD-151 engine, combined with a solid-fueled second stage built by South Korea.

The proposed recoverable Baikal flyback first stage is also based on the Universal Rocket Module, adding a scissor wing and a jet engine for the flyback phase of flight.

See also

• Angara rocket
• Liquid rocket booster
• Common Core Booster similar design used in Atlas V rocket

External links

• Angara page by Khrunichev Space Center (Russian)
• Angara page on RussianSpaceWeb