RD-171 M
Glavkosmos
The RD-171 M is a powerful liquid rocket engine designed for the first stage of the Zenit launch vehicle, utilizing oxygen and kerosene propellants with an afterburning oxidizing gas cycle.
Key figurescomparable across the catalogue
- Mass
- 9,300 kg
- Largest dimension
- 4,150 mm
- Thrust
- 740 N
- Specific impulse
- 309 s
- Design life
- 8 years
- Lead time
- 22 months
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
- Engines for the first stage of the Zenit launch vehicle.
- Year of release
- 2004
- Design life
- 8 renewable years
- Lead time
- 22 months
- Flight qualification of the product
- Yes
- Brief history of flight qualification
- 30 launches since 2006 g. (01.09.2019).
- Possibility to adapt the product to customer requirements
- Yes
- Thrust, earth / void
- 740 / 806 tf
- Specific impulse, earth / void
- 309 / 337 s
- Pressure in the combustion chamber
- 250 kgf / cm2
- Weight, dry / dipped
- 9300 / 10300 kg
- Dimensions height / diameter
- 4150 / 3565 mm
- Development period
- 1992-1996 2003-2004
- Thrust vector control by swinging cameras in the same plane
- 6 o
- Thrust range
- 105-49 %
About
The RD-171 M is a liquid rocket engine with afterburning of oxidizing gas, designed specifically for the first stage of the Zenit launch vehicle. It uses oxygen and kerosene as propellants and is noted as the most powerful liquid rocket engine in the world. The engine was developed between 1992-1996 and 2003-2004, with its year of release in 2004. It has a guaranteed service life of 8 years, which is renewable. The engine features thrust vector control by swinging cameras in the same plane, with a range of 6 degrees, and a thrust range from 105% down to 49%. It has undergone extensive testing, with over 1000 fire tests accumulating more than 110,000 seconds of total operating time, demonstrating its performance across a wide range of thrust modes. The product has flight qualification, with a history of 30 launches since 2006 (as of September 1, 2019). The manufacturer states the possibility to adapt the product to customer requirements. Estimated production/delivery time is 22 months.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.