PlanetSpace Comp. / ATK /  Boeing Comp. Athena-III
Overall
Vehicle
Operational from  
  to  
Orbital flights   0
Payload weight t SSO 4.30
Gross liftoff weight t ~468
Gross propellant weight t 406.58
Total length m ~52.0
Max. diameter (span) m  
Total liftoff thrust (s.l.) kN 9,274
Total impulse (vac) MN*s 1,103.0

Fairing

Total length m ~10.0
Diameter m ~3.60
Total weight t ~1.3
Stage 4

Name

  O.A.M.
  Length m 0.81
Diameter m 2.34
Liftoff weight t 0.714
Propellant weight t 0.354
Engines  

MR-107 (4)

Propellant   Hydrazine
Total thrust (vac) kN 0.89
Specific impulse (vac) N*s/kg 2206
Burn time s 890
Total impulse (vac) MN*s 0.78
Stage 3

Name

  Castor-30
  Length m 3.50
Diameter m 2.34
Liftoff weight t 14.061
Propellant weight t 12.837
Engines   Thiokol
Propellant  

solid HTPB

Total thrust (vac) kN 258.9
Specific impulse (vac) N*s/kg 2890
Burn time s 143
Total impulse (vac) MN*s 37.1

Stage 2

Name   Castor 120
  Length m ~11.0
Diameter m 2.36
Liftoff weight t 54.00
Propellant weight t 49.01
Engines   Thiokol
Propellant   solid HTPB
Total thrust (vac) kN 1,685.9
Specific impulse (vac) N*s/kg 2736
Burn time s 79.5
Total impulse (vac) MN*s 134.1

Stage 1

Name   RSRM-2.5
  Length m 26.34
Diameter m 3.71
Liftoff weight t 393.50
Propellant weight t 344.38
Engines   Thiokol
Propellant   solid PBAN
Total thrust (s.l.) kN 9,274.0 (max)
Specific impulse (s.l.) N*s/kg 2452
Burn time s 113.2
Total impulse (vac) MN*s 931.0