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Titan IV was an extended length Titan III with solid rocket boosters on its sides. The Titan IV could be launched with a Centaur upper stage, the USAF Inertial Upper Stage (IUS), or no upper stage at all. This rocket was used almost exclusively to launch US military or Central Intelligence Agency payloads. However, it was also used for a purely scientific purpose to launch the NASA–ESA Cassini / Huygens space probe to Saturn in 1997. The primary intelligence agency that needed the Titan IV's launch capabilities was the National Reconnaissance Office (NRO).
Missions
39
Success Rate
89.7%
Successes
35
Failures
4
Success Streak
12
Partial Failures
0
Active in 2005
Rocket
Height: 54m
Payload to Orbit
LEO: 21,680 kg
Liftoff Thrust
15,000 Kilonewtons
Fairing
Diameter: 5.1m
Stages
2
Strap-ons
2
Active 1990 to 1996
Rocket
Height: 54m
Payload to Orbit
LEO: 17,700 kg
Liftoff Thrust
14,200 Kilonewtons
Fairing
Diameter: 5.1m
Stages
2
Strap-ons
2
Active 1999 to 2005
Rocket
Height: 54m
Payload to Orbit
LEO: 21,680 kg
Liftoff Thrust
15,000 Kilonewtons
Fairing
Diameter: 5.1m
Stages
2
Strap-ons
2
Active 1992 to 1996
Rocket
Height: 54m
Payload to Orbit
LEO: 17,700 kg
Liftoff Thrust
14,200 Kilonewtons
Fairing
Diameter: 5.1m
Stages
2
Strap-ons
2
Active in 2000
Rocket
Height: 54m
Payload to Orbit
LEO: 21,680 kg
Liftoff Thrust
15,000 Kilonewtons
Fairing
Diameter: 5.1m
Stages
2
Strap-ons
2
Active 1991 to 1997
Rocket
Height: 54m
Payload to Orbit
LEO: 17,700 kg
Liftoff Thrust
14,200 Kilonewtons
Fairing
Diameter: 5.1m
Stages
2
Strap-ons
2
Active 1997 to 2004
Rocket
Height: 54m
Liftoff Thrust
15,000 Kilonewtons
Fairing
Diameter: 5.1m
Stages
4
Strap-ons
2
Active 1989 to 1994
Rocket
Height: 54m
Payload to Orbit
GTO: 4,944 kg
Liftoff Thrust
14,200 Kilonewtons
Fairing
Diameter: 5.1m
Stages
4
Strap-ons
2
Active 1997 to 2003
Rocket
Height: 62m
Liftoff Thrust
15,000 Kilonewtons
Fairing
Diameter: 5.1m
Stages
3
Strap-ons
2
Active 1994 to 1998
Rocket
Height: 63m
Liftoff Thrust
14,200 Kilonewtons
Fairing
Diameter: 5.1m
Stages
3
Strap-ons
2