|Country of origin||Russia|
|Diameter||4.10 metres (13.5 ft)|
|Length||2.61 metres (8 ft 7 in)|
|Gross 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 liquid-propellant rocket 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||Proton-K/Briz-M||launch failure due to explosion of Proton second stage. Carried a Raduga communication satellite.|
|6 June 2000||Proton-K/Briz-M||First successful flight of the Briz-M and delivery of Gorizont #45L communication satellite.|
|7 April 2001||Proton-M/Briz-M||Maiden flight of Proton-M. Successful delivery of Ekran-M #18L communications satellite.|
|30 December 2002||Proton-M/Briz-M||successful launch of an Nimiq 2 satellite.|
|6 June 2003||Proton-K/Briz-M||successful launch of an Americom communication satellite.|
|10 December 2003||Proton-K/Briz-M||successful launch of three GLONASS positioning satellites.|
|15 March 2004||Proton-M/Briz-M||successful launch of Eutelsat W3A communications satellite.|
|17 June 2004||Proton-M/Briz-M||successful launch of Intelsat-10-02 communications satellite.|
|5 August 2004||Proton-M/Briz-M||successful delivery of Amazonas 1 satellite into an elliptical transfer orbit.|
|15 October 2004||Proton-M/Briz-M||successful launch of AMC-15 communications satellite for SES Americom.|
|3 February 2005||Proton-M/Briz-M||successful launch of AMC-12 communications satellite for SES Americom.|
|22 May 2005||Proton-M/Briz-M||successful launch of Direc TV-8 satellite.|
|8 September 2005||Proton-M/Briz-M||successful launch of Anik-F1R satellite.|
|29 December 2005||Proton-M/Briz-M||successful launch of AMC-23 communications satellite.|
|28 February 2006||Proton-M/Briz-M||launch failure leaves Briz-M and payload in unusable orbit. Carried an Arabsat-4A communication satellite. The booster eventually exploded on February 19, 2007, producing over 1000 trackable pieces of space debris.|
|4 August 2006||Proton-M/Briz-M||successful launch of Hot Bird 8 communications satellite into the geostationary orbit for the Eutelsat.|
|8 November 2006||Proton-M/Briz-M||successful launch of Arabsat-4B (Badr-4) communications satellite.|
|11 December 2006||Proton-M/Briz-M||successful launch of MEASAT-3 Malaysian communications satellite.|
|10 April 2007||Proton-M/Briz-M||successful launch of Anik F3 satellite for Telesat of Canada.|
|7 July 2007||Proton-M/Briz-M||successful launch of DirecTV-10|
|6 September 2007||Proton-M/Briz-M||Proton-M with JCSAT-11 satellite crashed after second stage failure of a gimbal mechanism.|
|18 November 2007||Proton-M/Briz-M||successful launch of Sirus 4 communications satellite.|
|9 December 2007||Proton-M/Briz-M||successful launch of Raduga-1M #1 satellite.|
|15 March 2008||Proton-M/Briz-M||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||Proton-M/Briz-M||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||Proton-M/Briz-M||successful launch of Nimiq-4|
|6 November 2008||Proton-M/Briz-M||successful launch of Astra 1M from Baikonur, Kazakhstan|
|10 December 2008||Proton-M/Briz-M||successful launch of Ciel-2 from Baikonur.|
|11 February 2009||Proton-M/Briz-M||successful launch of Express-AM44 and Express-MD1 from Baikonur|
|1 July 2009||Proton-M/Briz-M||successful launch of Sirius FM-5 from Baikonur|
|3 February 2011||Rokot/Briz-KM||Failed launch of Geo-IK-2 satellite from Plesetsk - failed Briz-KM restart.|
|17 August 2011||Proton-M/Briz-M||Failed launch of Ekspress-AM4 satellite from Baikonur - lost contact with Briz-M on fourth burn.|
|3 November 2011||Proton-M/Briz-M||successful launch of 3 Glonass satellites.|
|11 December 2011||Proton-M/Briz-M||successful launch of AMOS-5 (Spacecom) and Luch-5A.|
|14 February 2012||Proton-M/Briz-M||successful launch of SES-4 communication satellite|
|6 August 2012||Proton-M/Briz-M||Failed launch of Telkom-3 and Ekspress-MD2 communication satellites|
|8 December 2012||Proton-M/Briz-M||Partial success launch of Yamal-402 communication satellite placing close to designated orbit keeping possibility to correct it|
|26 March 2013||Proton-M/Briz-M||successful launch of Satmex 8 communications satellite to Geostationary transfer orbit|
|15 April 2013||Proton-M/Briz-M||successful launch of Anik G1 satellite|
|14 May 2013||Proton-M/Briz-M||successful launch of Eutelsat-3D satellite|
|3 June 2013||Proton-M/Briz-M||successful delivery of SES-6 communication satellite into super-synchronous transfer orbit|
|30 September 2013||Proton-M/Briz-M||successful delivery of Astra-2E communication satellite into Geosynchronous transfer orbit|
|25 October 2013||Proton-M/Briz-M||successful delivery of Sirius FM-6 satellite into Geostationary transfer orbit|
|12 November 2013||Proton-M/Briz-M||successful delivery of Raduga 1M #3 military communications satellite. However, all telemetry and data from the Briz-M was lost due to failed onboard data processing system Пирит (Pyrite)|
|8 December 2013||Proton-M/Briz-M||successful delivery of Inmarsat-5 F1 satellite into super-synchronous transfer orbit|
|26 December 2013||Proton-M/Briz-M||successful delivery of Ekspress AM-5 satellite|
|15 February 2014||Proton-M/Briz-M||successful orbital insertion of Turksat-4A telecommunications satellite into Geostationary transfer orbit|
|16 March 2014||Proton-M/Briz-M||successful delivery of Express AT1 and Express AT2 telecommunications satellites into Geostationary orbit|
|28 April 2014||Proton-M/Briz-M||successful delivery of Luch-5V & KazSat-3 communications satellites into Geosynchronous orbit|
|16 May 2014||Proton-M/Briz-M||Loss of Ekspress AM-4R satellite due to failed Proton-M third stage|
|28 September 2014||Proton-M/Briz-M||successful delivery of Olimp-K/Luch military communications satellite into Geostationary orbit|
|21 October 2014||Proton-M/Briz-M||Ekspress-AM6 satellite was delivered to a lower-than-planned orbit. Later, Roscosmos stated that Ekspress-AM6 would be able to reach its planned orbit and expected to be operational by July 1, 2015|
|15 December 2014||Proton-M/Briz-M||successful delivery of Yamal 401 satellite into Geostationary orbit|
|28 December 2014||Proton-M/Briz-M||successful delivery of Astra 2G satellite to Geostationary transfer orbit|
|1 February 2015||Proton-M/Briz-M||successful delivery of Inmarsat 5-F2 satellite into Supersynchronous transfer orbit|
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