Briz (rocket stage)
| Models of Briz-M (left) and Briz-KM (right) at the 2013 Paris Air Show | |
| Manufacturer | Khrunichev | 
|---|---|
| Country of origin | Russia | 
| General characteristics | |
| Diameter | 2.5 m (8 ft 2 in) | 
| Length | 2.6 m (8 ft 6 in) | 
| Gross mass | 6,475 kg (14,275 lb) | 
| Propellant mass | 5,055 kg (11,144 lb) | 
| Engine details | |
| Powered by | 1 × S5.98M | 
| Maximum thrust | 19.6 kN (4,400 lbf) | 
| Specific impulse | 326 s (3.20 km/s) | 
| Burn time | 3,000 seconds | 
| Propellant | N2O4 / UDMH | 
| Manufacturer | Khrunichev | 
|---|---|
| Country of origin | Russia | 
| General characteristics | |
| Diameter | 4.1 m (13 ft) | 
| Length | 2.61 m (8 ft 7 in) | 
| Gross mass | 22,500 kg (49,600 lb) | 
| Propellant mass | 20,000 kg (44,000 lb) | 
| Engine details | |
| Powered by | 1 × S5.98M | 
| Maximum thrust | 19.6 kN (4,400 lbf) | 
| Specific impulse | 326 s (3.20 km/s) | 
| Propellant | N2O4 / UDMH | 
The Briz-K, Briz-KM and Briz-M (Russian: Бриз-К, КM and M meaning Breeze-K, KM and M) are Russian liquid-propellant rocket orbit insertion upper stages manufactured by Khrunichev State Research and Production Space Center and used on the Proton-M and Angara A5. The upper stages were also used on Rokot, one of Russia's smaller launchers, before its retirement in 2019.