Lockheed Martin Astronautics / USAF

 Titan IVB Titan IVB (IUS) Titan IVB (Centaur)

Overall
Vehicle

 Operational from 22.05.1999 23.02.1997 15.10.1997
  to 19.10.2005 14.02.2004 08.09.2003
Orbital flights   5 5 7
Payload weight t LEO 21.68 GEO 3.60 GEO 5.77
Gross liftoff weight t      
Gross propellant weight t 818.20 830.69 839.06
Total length m 51.36 56.25 59.30
Max. diameter (span) m      
Total liftoff thrust (s.l.) kN 15,566 15,566 15,566
Total impulse (vac) MN*s 2,301.3 2,337.7 2,392.6

Fairing

 Total length m 15.18/17.03 17.03/20.07 20.07/23.12/26.17
Diameter m 5.08 5.08 5.08
Total weight t 3.6/5.0 5.0/5.5 5.5/5.9/6.3
Stage 4

Name

     IUS-2  
  Length m   1.68 (1.90)  
Diameter m 2.89 (1.60)
Liftoff weight t 3.865
Propellant weight t 2.735
Engines   ORBUS-6E
Propellant  

solid ANB
Total thrust (vac) kN 79.2
Specific impulse (vac) N*s/kg 2976
Burn time s 103
Total impulse (vac) MN*s 8.1
Stage 3

Name

     IUS-1 Centaur-T
  Length m   3.50 (3.15) 8.98
Diameter m 2.34 4.32
Liftoff weight t 11.00 23.880
Propellant weight t 9.759 20.865
Engines (Chambers)   ORBUS-21 LR-10A-4-1 (2)
Propellant   solid HTPB LH2/LOX
Total thrust (vac) kN 183.7 195.7
Specific impulse (vac) N*s/kg 2898 4378
Burn time s 154 466.7
Total impulse (vac) MN*s 28.3 91.3
Stage 2

Name

        
  Length +adapter m 8.93 8.93 8.93
Diameter m 3.05 3.05 3.05
Liftoff weight t 39.54 39.54 39.54
Propellant weight t 34.74 34.74 34.74
Engines   LR-91-AJ-11A LR-91-AJ-11A LR-91-AJ-11A
Propellant   Aerozine50/N2O4 Aerozine50/N2O4 Aerozine50/N2O4
Total thrust (vac) kN 472.2 472.2 472.2
Specific impulse (vac) N*s/kg 3094 3094 3094
Burn time s 227.5 227.5 227.5
Total impulse (vac) MN*s 107.5 107.5 107.5

Stage 1

 Name        
  Length +interstage m 26.37 26.37 26.37
Diameter m 3.05 3.05 3.05
Liftoff weight t 161.21 161.21 161.21
Propellant weight t 152.57 152.57 152.57
Engines 2 LR-87-AJ-11A LR-87-AJ-11A LR-87-AJ-11A
Propellant   Aerozine50/N2O4 Aerozine50/N2O4 Aerozine50/N2O4
Total thrust (s.l.) kN 2,034.6 2,039.5 2,039.5
Specific impulse (s.l.) N*s/kg 2473 2473 2473
Burn time s 185.5 185 185
Total impulse (vac) MN*s 454.7 454.7 454.7

Booster

 Name   2 SRMU 2 SRMU 2 SRMU
  Length m 34.26 34.26 34.26
Diameter m 3.20 3.20 3.20
Liftoff weight t 698.54 698.54 698.54
Propellant weight t 630.89 630.89 630.89
Engines   ATK ATK ATK
Propellant   HTPB HTPB HTPB
Total thrust (s.l.) kN 13,532 (max) 13,532 (max) 13,532 (max)
Specific impulse (s.l.) N*s/kg 2465 2465 2465
Burn time s 135.7 135.7 135.7
Total impulse (vac) MN*s 1,739.1 1,739.1 1,739.1