|Country of origin||Russia|
|Diameter||4.10 metres (13.5 ft)|
|Length||2.61 metres (8 ft 7 in)|
|Mass||22,170 kilograms (48,880 lb)|
|Propellant mass||19,800 kilograms (43,700 lb)|
|Thrust||19.6 kN (4,400 lbf)|
|Specific impulse||326 s|
The Briz-M (Russian: Бриз-М meaning Breeze-M) and Briz-KM are Russian orbit insertion upper stages manufactured by Khrunichev State Research and Production Space Center and used on the Proton-M rocket or Rokot, one of Russia's smaller launchers.
The Briz-M upper stage is designed for injecting large payloads into a low, medium-height or high Geosynchronous orbit. The main engine can be restarted 8 times in flight and allows precision placement of the spacecraft into orbit. Orbital lifetime of the Briz-M is limited by available onboard battery power and is currently 24 hours. The total time of the standard Proton/Briz-M mission profile from lift-off to spacecraft separation is approximately 9.3 hours. A Proton launch vehicle with a Briz-M upper stage can also inject payloads to Earth escape trajectories.
One of system's design goals has been to keep overall dimensions as small as possible. Briz-M takes much less space on board the launch vehicle compared to its predecessor, the Block D upper stage, leaving freed volume for the cargo. A Proton with a Briz-M can place a 4,385 kg satellite, such as an A2100AX, into a target orbit with an apogee of 35,786 km, a perigee of 7,030 km, and an inclination of 17.3°. Maximum lift capability of the Briz-M stage is 5,645 kg to geosynchronous transfer orbit with a 1,500 m/s residual velocity to GSO. A tandem launch of multiple spacecraft is also supported, with the ability to inject the spacecraft into different orbits.
Briz-M is a twin upper stage consisting of a core module (using Briz-KM as the baseline) and a jettisonable add-on doughnut tank surrounding the core. It is powered by a pump-fed gimballed main engine, the 14D30.
|5 July 1999||launch failure due to explosion of Proton second stage. Carried a Raduga communication satellite.|
|6 June 2000||successful launch of a Gorizont communication satellite.|
|6 June 2003||successful launch of an Americom communication satellite.|
|10 December 2003||successful launch of three GLONASS positioning satellites.|
|28 February 2006||launch failure leaves Briz-M and payload in unusable orbit. Carried an Arabsat-4M communication satellite. The booster eventually exploded on February 19, 2007, producing over 1000 trackable pieces of space debris.|
|7 July 2007||successful launch of DirecTV-10|
|14 March 2008||failed during second burn, leaving AMC-14 in useless orbit. The failure was caused by a ruptured exhaust gas conduit, which led to a shutdown of the turbo pump feeding the Briz-M engine.|
|19 August 2008||successful launch of the Inmarsat 4 F3 satellite. A modification was made to the Briz-M engine to include a new conduit in response to the March 14 failure. This modification will be used in all future launches.|
|20 September 2008||successful launch of Nimiq-4|
|5 November 2008||successful launch of Astra 1M from Baikonur, Kazakhstan|
|10 December 2008||successful launch of Ciel-2 from Baikonur.|
|11 February 2009||successful launch of Express-AM44 and Express-MD1 from Baikonur|
|1 July 2009||successful launch of Sirius FM-5 from Baikonur|
|3 February 2011||Failed launch of Geo-IK-2 satellite from Plesetsk - failed Briz-KM restart.|
|17 August 2011||Failed launch of Ekspress-AM4 satellite from Baikonur - lost contact with Briz-M on fourth burn.|
|3 November 2011||successful launch of 3 Glonass satellites.|
|11 December 2011||successful launch of AMOS-5 (Spacecom) and Luch-5A.|
|14 February 2012||successful launch of SES-4 communication satellite|
|6 August 2012||Failed launch of Telkom-3 and Ekspress-MD2 communication satellites|
|8 December 2012||Partial success launch of Yamal-402 communication satellite placing close to designated orbit keeping possibility to correct it|
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