Stage

Engines

Thrust s.l.

Isp s.l.

Thrust vac

Isp vac

Propellant

Burn time

Flow rate

Total Imp

-

-

kN

N*s/kg

kN

N*s/kg

tons

s

t/s

MN*s

1

RD-214U

635.5

2254

730.6

2591

36.365

129

0.2820

94.2

2

RD-119

105.5

3453

7.755

254

0.0305

26.8