Lockheed Martin Astronautics / USAF

Titan IVA (34D7) Titan IVA (IUS) Titan IVA (Centaur)

Overall
Vehicle

Operational from 08.06.1990 14.06.1989 07.02.1994

 

to 23.10.1997 22.12.1994 12.08.1998
Orbital flights   10 3 9
Payload weight t LEO 17.70 GEO 2.38 GEO 4.54
Gross liftoff weight t      
Gross propellant weight t 723.91 735.80 744.78
Total length m 51.36 53.21 59.30
Max. diameter (span) m      
Total liftoff thrust (s.l.) kN 14,951 14,951 14,951
Total impulse (vac) MN*s 1,983.0 2,019.4 2,073.9

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 2979
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-3-3A (2)
Propellant   solid HTPB LH2/LOX
Total thrust (vac) kN 183.7 146.8
Specific impulse (vac) N*s/kg 2898 4358
Burn time s 154 619.5
Total impulse (vac) MN*s 28.3 90.9
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 467.1 467.1 467.1
Specific impulse (vac) N*s/kg 3094 3094 3094
Burn time s 230 230 230
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 2,034.6 2,034.6
Specific impulse (s.l.) N*s/kg 2473 2473 2473
Burn time s 185.5 185.5 185.5
Total impulse (vac) MN*s 454.7 454.7 454.7

Booster

Name   2 SRM 2 SRM 2 SRM
  Length m 34.14 34.14 34.14
Diameter m 3.11 3.11 3.11
Liftoff weight t 623.25 623.25 623.25
Propellant weight t 536.60 536.60 536.60
Engines   UTC UA-1207 UTC UA-1207 UTC UA-1207
Propellant   HTPB HTPB HTPB
Total thrust (s.l.) kN 12,916.4 (max) 12,916.4 (max) 12,916.4 (max)
Specific impulse (s.l.) N*s/kg 2403 2403 2403
Burn time s 128.9 128.9 128.9
Total impulse (vac) MN*s 1,420.8 1,420.8 1,420.8