Encyclopedia Astronautica
Titan 23B


American orbital launch vehicle. Basic Titan 3A core, originally developed for Titan 3C, with Agena D upper stage replacing Transtage. New radio guidance system, 1.5 m diameter fairing atop Agena. Payload remained attached to the Agena.

Gross mass: 165,000 kg (363,000 lb).
Height: 45.00 m (147.00 ft).
Diameter: 3.05 m (10.00 ft).
Thrust: 2,300.00 kN (517,000 lbf).
Apogee: 1,000 km (600 mi).
First Launch: 1971.01.21.
Last Launch: 1971.04.22.
Number: 2 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • KH-8 American military surveillance satellite. 61 launches, 1966.07.29 (OPS 3014) to 1984.04.17 (OPS 8424). Longest-lived and last US film-return reconnaissance satellite. Ground resolution 0.5 m. Film returned in two capsules. Typical life 50 days. More...

See also
  • Titan The Titan launch vehicle family was developed by the United States Air Force to meet its medium lift requirements in the 1960's. The designs finally put into production were derived from the Titan II ICBM. Titan outlived the competing NASA Saturn I launch vehicle and the Space Shuttle for military launches. It was finally replaced by the USAF's EELV boosters, the Atlas V and Delta IV. Although conceived as a low-cost, quick-reaction system, Titan was not successful as a commercial launch vehicle. Air Force requirements growth over the years drove its costs up - the Ariane using similar technology provided lower-cost access to space. More...

Associated Manufacturers and Agencies
  • Martin American manufacturer of rockets, spacecraft, and rocket engines. Martin Marietta Astronautics Group (1956), Denver, CO, USA. More...

Associated Launch Sites
  • Vandenberg Vandenberg Air Force Base is located on the Central Coast of California about 240 km northwest of Los Angeles. It is used for launches of unmanned government and commercial satellites into polar orbit and intercontinental ballistic missile test launches toward the Kwajalein Atoll. More...
  • Vandenberg SLC4W Titan, Atlas launch complex. First designated PALC2-3 and used to launch Atlas Agena D with KH-7 spysats. Rebuilt in 1966 to handle Titan 3B with various military payloads. From 1988 used to launch refurbished surplus Titan 2 ICBM's in space launch role. More...

Associated Stages
  • Agena D Nitric acid/UDMH propellant rocket stage. Loaded/empty mass 6,821/673 kg. Thrust 71.17 kN. Vacuum specific impulse 300 seconds. One of the real workhorses of US space exploration, Agena was a restartable upper stage which was also employed as a spacecraft, the whole vehicle going into orbit. A mainstay of the US Air Force reconnaisance satellite program, it also boosted early NASA probes to the moon and planets. Agena played a key role in manned space flight as the target vehicle for rendezvous and docking manoeuvres in NASA's Gemini project. It More...
  • Titan 3A-2 N2O4/Aerozine-50 propellant rocket stage. Loaded/empty mass 29,188/2,653 kg. Thrust 453.71 kN. Vacuum specific impulse 316 seconds. More...
  • Titan 3A-1 N2O4/Aerozine-50 propellant rocket stage. Loaded/empty mass 116,573/5,443 kg. Thrust 2,339.76 kN. Vacuum specific impulse 302 seconds. More...

Titan 23B Chronology


1971 January 21 - . 18:28 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC4W. LV Family: Titan. Launch Vehicle: Titan 23B. LV Configuration: Titan 23B 23B-8 (3B-30).
  • OPS 7776 - . Payload: KH-8 no. 30 / Agena D. Mass: 3,000 kg (6,600 lb). Nation: USA. Agency: NRO; USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-8. Decay Date: 1971-02-09 . USAF Sat Cat: 4874 . COSPAR: 1971-005A. Apogee: 418 km (259 mi). Perigee: 139 km (86 mi). Inclination: 110.9000 deg. Period: 90.10 min. Summary: KH-8 type satellite. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

1971 April 22 - . 15:30 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC4W. LV Family: Titan. Launch Vehicle: Titan 23B. LV Configuration: Titan 23B 23B-9 (3B-31).
  • OPS 7899 - . Payload: KH-8 no. 31 / Agena D. Mass: 3,000 kg (6,600 lb). Nation: USA. Agency: NRO; USAF. Class: Surveillance. Type: Military surveillance satellite. Spacecraft: KH-8. Decay Date: 1971-05-13 . USAF Sat Cat: 5171 . COSPAR: 1971-033A. Apogee: 403 km (250 mi). Perigee: 132 km (82 mi). Inclination: 110.6000 deg. Period: 89.80 min. Summary: KH-8 type satellite. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

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