Bipropellant Thruster
Glavkosmos
A bipropellant thruster designed for the Briz-M booster, providing attitude control for spacecraft using UDMH/NTO propellants.
Key figurescomparable across the catalogue
- Mass
- 3 kg
- Thrust
- 392 N
- Specific impulse
- 304.79 s
Normalised to common units so this product can be compared with others in its category. The supplier's own wording is below.
As published by the supplier
- Purpose
- Briz-M booster
- Year of release
- 2005
- Flight qualification of the product
- Letter "O", flight use
- Brief history of flight qualification
- By the beginning of 2019 the11D458M thrusters numbering 260 have provided successful service of the Briz-M booster.
- Possibility to adapt the product to customer requirements
- Yes
- Propellants, fuel/oxidizer
- UDMH/NTO
- Nominal thrust
- 392 N
- Nominal specific impulse, steady state
- 2,989 m/s
- Nominal inlet pressure
- 1.47 MPa
- Inlet operating pressure
- 1.27…1.97 MPa
- Total firing time, up to
- 1,000 s
- Cycle life, number of starts-up, up to
- 10,000
- Nozzle expansion ratio
- 100
- Operating voltage
- 27 V
- Mass, not over
- 3 kg
About
The Bipropellant Thruster, released in 2005, is designed for the Briz-M booster to provide attitude control for spacecraft by forming multiple impulses in response to control system triggering commands. It utilizes UDMH/NTO as propellants and has a nominal thrust of 392 N with a nominal specific impulse of 2,989 m/s. The thruster operates with an inlet pressure range of 1.27 to 1.97 MPa and has a total firing time of up to 1,000 seconds, with a cycle life of up to 10,000 starts. Key design features include a high specific impulse, a high-temperature Niobium alloy nozzle with disilicide oxidation-resistant coating, and flow stabilizers that ensure constant fuel/oxidizer flow rates despite changes in inlet pressure. The product has extensive flight heritage, with 260 11D458M thrusters successfully serving the Briz-M booster by early 2019. The manufacturer also offers the possibility to adapt the product to customer requirements.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.