RD-181
Glavkosmos
The RD-181 is a liquid rocket engine with afterburning of oxidizing gas, designed for the first stage of the Antares launch vehicle, using oxygen and kerosene as propellants.
Key figurescomparable across the catalogue
- Mass
- 2,200 kg
- Largest dimension
- 3,680 mm
- Thrust
- 196 N
- Specific impulse
- 311 s
- Design life
- 11 years
- Lead time
- 14 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 advanced Antares launch vehicle.
- Year of release
- 2015
- Design life
- 11 years
- Lead time
- 14 months
- Flight qualification of the product
- Yes
- Brief history of flight qualification
- 6 launches (02.11.2019).
- Possibility to adapt the product to customer requirements
- Yes
- Thrust, earth / void
- 196/212 tf
- Specific impulse, earth / void
- 311 / 339 s
- Pressure in the combustion chamber
- 262.6 kgf / cm2
- Weight, dry / dipped
- 2200/2330 kg
- Dimensions height / diameter
- 3680 / 2100 mm
- Development period
- 2014-2015
- Thrust vector control (2 channels) due to camera swing in two planes
- 8 o
- Thrust range
- 105-30 %
About
The RD-181 is a liquid rocket engine with afterburning of oxidizing gas, specifically designed for the first stage of the advanced Antares launch vehicle. It utilizes oxygen and kerosene as propellants. The engine was released in 2015 and has a guaranteed service life of 11 years. It boasts a wide thrust regulation range from 105% down to 30%. The engine features thrust vector control through camera swing in two planes, with an 8-degree range. It has undergone flight qualification, with 6 launches recorded as of November 2, 2019. The manufacturer offers the possibility to adapt the product to customer requirements. The estimated production and delivery time is 14 months.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.