Propulsion Atlas V



Pratt&Whitney/Energomash RD-180



RL-10A-4-2



RL-10C-1

 Atlas V 400, 500

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
SRB

AJ-60A

max 1,508.0 2447  max 1,688.3 2739 42.63 93.8 max 0.6164 116.8
ave 1,112.1 ave 1,245.2 ave 0.4545
CCB

RD-180

100%

3,826.9 3059 4,152.0 3318 284.089 227 1.2512 942.8
D-5 (SEC)

RL-10A-4-2

    97.9 4378 20.830 932 0.0224 91.2

RL-10A-4-2N

    99.2 4418 20.830 928 0.0224 90.0
D-5 (SEC)

RL-10C-1

    101.8 4410 20.830 902 0.0231 91.8

Atlas V HLV

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
CCB (add.)

RD-180

100%

3,826.9 3059 4,152.0 3318 284.089 227 1.2512 942.8
CCB

RD-180

100%

3,826.9 3059 4,152.0 3318 284.089 227 1.2512 942.8
D-5 (SEC)

RL-10A-4-2

    97.9 4378 20.830 932 0.0237 91.2