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Briz M
Briz M -

Credit: Khrunichev. 11,437 bytes. 291 x 196 pixels.

Gross Mass: 22,170 kg. Empty Mass: 2,370 kg. Thrust (vac): 2,000 kgf. Isp: 326 sec. Burn time: 3,000 sec. Propellants: N2O4/UDMH Diameter: 2.5 m. Span: 4.1 m. Length: 2.6 m. Country: Russia. No Engines: 1. S5.98M Status: Development. Other designations: Briz M.

New upper stage for Proton, replacing Energia Corporation's Block DM, making Proton an all-Khrunichev launch vehicle. The Khrunichev-built Briz-M upper stage is a derivative of the flight-proven Briz -K stage (as used on the Rokot booster). The Briz-M consists of a central cylinder and a jettisonable external propellant tank. Propellant carried is dependent on the specific mission requirements and is varied to maximize performance for the mission. The Briz-M is capable of operating, on-orbit, for a minimum of 24-hours and is controlled by a closed loop, triple redundant guidance system that is commandable in flight.

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Last update 12 March 2001.
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