Propulsion FB-1

Photos: S. Grahn, Sweden
   
FB-1 designed YF-21 engine with a different combustor



FB-1 designed YF-22 engine

FB-1

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

YF-21

2,784.6 2539 3,001.0 2736 139 126.7 1.0968 380.3
2

YF-22

    719.8 2834 34 133.8 0.2540 96.4

without verniers