RD870 engine block (EB) with turbopump propellant feed system is made according to generator gas afterburning scheme. The EB is developed on the basis of Zenit LV proven technologies. RD872 engine can be developed on its basis for LV second stage with thrust ~90 tf.

 

 

 

 

 

 

 

 

 

BASIC SPECIFICATIONS

Engine mass, kg

1353

Propellant components:                                       

О2+ kerosene

Ground thrust, tf 79,3

Vacuum thrust, tf

89,4

Ground specific impulse, s 301,5

Vacuum specific impulse, s

340,0

Propellant mixture ratio

2,684

Number of firings

1

TRL

6

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