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Titan 402B/IUS
Part of Titan Family
American orbital launch vehicle. Version of Titan 4B with IUS upper stage.

Status: Retired 2004. First Launch: 1997-02-23. Last Launch: 2004-02-14. Number: 5 . Thrust: 15,000.00 kN (3,372,000 lbf). Gross mass: 925,000 kg (2,039,000 lb). Height: 54.00 m (177.00 ft). Diameter: 3.05 m (10.00 ft). Apogee: 40,000 km (24,000 mi).


More at: Titan 402B/IUS.

Family: orbital launch vehicle. Country: USA. Spacecraft: DSP. Launch Sites: Cape Canaveral, Cape Canaveral LC40, Cape Canaveral LC41. Stages: Titan 4-1, Titan 4-2, SRM-1, SRM-2, USRM. Agency: Martin.

1997 February 23 - . 20:20 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan 402B/IUS.
  • USA 130 - . Payload: DSP-1 Block 18 F18. Mass: 2,380 kg (5,240 lb). Nation: USA. Agency: USAF. Manufacturer: TRW. Class: Surveillance. Type: Early warning satellite. Spacecraft: DSP. USAF Sat Cat: 24737 . COSPAR: 1997-008A. Apogee: 35,790 km (22,230 mi). Perigee: 35,780 km (22,230 mi). Inclination: 0.0000 deg. DSP-1 Block 14 ballistic missile launch detection satellite. Positioned in geosynchronous orbit at 70 deg E in 1999. Still in service as of March 2007..

1999 April 9 - . 17:01 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. LV Family: Titan. Launch Vehicle: Titan 402B/IUS. FAILURE: IUS first and second stages failed to separate.. Failed Stage: U.
  • USA 142 - . Payload: DSP-1 Block 18 F19. Mass: 2,380 kg (5,240 lb). Nation: USA. Agency: USAF. Manufacturer: TRW. Class: Surveillance. Type: Early warning satellite. Spacecraft: DSP. USAF Sat Cat: 25669 . COSPAR: 1999-017A. Apogee: 35,800 km (22,200 mi). Perigee: 720 km (440 mi). Inclination: 28.0000 deg.

    The Titan 4B placed the IUS upper stages and DSP-1 Block 14 ballistic missile launch detection satellite. payload into a 188 km x 718 km x 28.6 deg parking orbit. The first stage of the IUS burned at 18:14 GMT and put the second stage and payload into a geosynchronous transfer orbit. The IUS second stage fired at 23:34 GMT in order to place the spacecraft in geosynchronous orbit. However, at least one connector remained attached between the stages, and the second stage motor nozzle did not extend properly. When the stage fired, the vehicle tumbled wildly during the burn. Separation of the DSP was achieved. Although it could not perform its primary mission, it did provide a good test case in that the effects of radiation on its systems could be monitored as they underwent twice-daily passages of the Van Allen Radiation Belts. However after some weeks the hydrazine propellant aboard the satellite vented into space due to a broken fuel line. It was believed this had been induced by the wild ride aboard the IUS-2 stage.


2000 May 8 - . 16:01 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Titan 402B/IUS.
  • USA 149 - . Payload: DSP-1 Block 18 F20. Mass: 2,380 kg (5,240 lb). Nation: USA. Agency: USAF. Manufacturer: TRW. Class: Surveillance. Type: Early warning satellite. Spacecraft: DSP. USAF Sat Cat: 26356 . COSPAR: 2000-024A. Apogee: 35,790 km (22,230 mi). Perigee: 35,780 km (22,230 mi). Inclination: 0.0000 deg.

    DSP-1 Block 14 ballistic missile launch detection satellite. Delivered by the two-stage IUS-22 solid rocket into geostationary orbit. Fullfilled mission of DSP 19 launched in 1999 into the wrong orbit when its IUS stage failed. Still in service as of March 2007. As of 2005 Apr 2 located at 8.05E drifting at 0.166E degrees per day.


2001 August 6 - . 07:28 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. Launch Pad: SLC40. LV Family: Titan. Launch Vehicle: Titan 402B/IUS.
  • USA 159 - . Payload: DSP-1 Block 18 F21. Mass: 2,380 kg (5,240 lb). Nation: USA. Agency: USAF. Manufacturer: TRW. Class: Surveillance. Type: Early warning satellite. Spacecraft: DSP. USAF Sat Cat: 26880 . COSPAR: 2001-033A. Apogee: 35,780 km (22,230 mi). Perigee: 35,780 km (22,230 mi). Inclination: 2.9000 deg. Period: 1,435.76 min.

    Launch postponed from February, then delayed from July 27. USA 159 was a US Air Force Defense Support Program infrared missile early warning satellite was placed by the Titan core into a 328 x 663 km x 28.7 deg parking orbit. The Boeing IUS-16 upper stage then fired its first solid motor to enter geostationary transfer orbit. The second IUS solid motor fired at around 14:00 GMT placing DSP Flight 21 in near-geosynchronous orbit. Still in service as of March 2007.


2004 February 14 - . 18:50 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. Launch Pad: SLC40. LV Family: Titan. Launch Vehicle: Titan 402B/IUS.
  • USA 176 - . Payload: DSP-1 Block 18 F22. Mass: 2,380 kg (5,240 lb). Nation: USA. Agency: NSA. Manufacturer: TRW. Class: Surveillance. Type: Early warning satellite. Spacecraft: DSP. USAF Sat Cat: 28158 . COSPAR: 2004-004A. Apogee: 36,105 km (22,434 mi). Perigee: 35,852 km (22,277 mi). Inclination: 0.6800 deg. Period: 1,445.94 min.

    DSP-1 Block 14 ballistic missile launch detection satellite. Last flight of the IUS upper stage. Launch delayed from November 4, 2003, and January 17, 2003. Planned IMEX piggyback payload cancelled. Still in service as of March 2007, expected to remain operational until 2017-2022. As of 2004 Feb 15 located at 96.66W drifting at 2.464W degrees per day.



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