Propulsion Scout


X-259 (Antares-IIA)


Star 31 (Antares III)
X-248 (Altair IA)


FW-4S (Altair III)


Star 20 (Altair IIIA)

 

Versions/Stage 1

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

X-1

Algol  IC

 436.6 1883 511.6 2206 9.685 41.8 0.2319 21.4

X-2, -2M, -2B

Algol  ID

 445.1 1921 520.4 2246 9.685 41.8 0.2319 21.8

X-3, X-3M

Algol  IIA

 458.2 2016 556.0 2447 9.685 42.6 0.2273 23.7

X-4

Algol  IIB

 464.7 2045 564.2 2482 9.685 42.6 0.2273 24.0

A, B

Algol  IIC

 471.9 2076 576.9 2539 9.685 42.6 0.2273 24.6

A-1, B-1, D-1

Algol  III

 484.0 2130 622.8 2740 12.796 56.3 0.2273 35.1

E-1, F-1, G-1

Algol  IIIA

 519.7 2286 668.7 2942 12.796 56.3 0.2273 37.6

 

Versions/ Stage 2

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

X

Castor IA

 157.7 1280 240.2 1950 3.327 27 0.1232 6.49

A to G-1

Castor IIA

 217.6 2158 267.4 2674 3.728 37 0.1008 9.97

 

Versions/Stage 3

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

X-1

Antares  IA

X-254

     66.7 2734 0.931 38.2 0.0244 2.54

X-2 to D-1

Antares  IIA

X-259

     93.1 2768 1.168 34.8 0.0336 3.23

E-1, F-1

Antares  IIB

ABL

     100.5 2770 1.168 32.2 0.0363 3.24

G-1

Antares  III

Star 31

     82.29 2906 1.286 45.4 0.0283 3.74

 

Versions/Stage 4

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

X-2M, -3M

MG-18

 

     ? 2383 0.248 ? ? 0.59

X-1, -2, -3

Altair  IA

X-248

     12.28 2496 0.207 42.0 0.0049 0.52

X-2B, -4, A, A-1

Altair  IIA

X-258

     22.24 2608 0.235 27.5 0.0085 0.61

B, B-1

Altair  III

FW-4S

     24.24 2746 0.276 31.5 0.0088 0.76

D-1 to G-1

Altair  IIIA

Star 20

     24.47 2829 0.273 31.6 0.0086 0.77

 

Versions/Stage 5

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 ton s t/s MN*s

E-1

Alcyone 1A

     27.46 2677 0.087 8.4 0.0103 0.23