Encyclopedia Astronautica
Delta 2310


American orbital launch vehicle. Three stage vehicle consisting of 3 x Castor 2 + 1 x ELT Thor/RS-27 + 1 x Delta P /TR-201

Status: Retired 1981.
Gross mass: 131,000 kg (288,000 lb).
Height: 35.00 m (114.00 ft).
Diameter: 2.44 m (8.00 ft).
Thrust: 1,737.00 kN (390,493 lbf).
Apogee: 1,500 km (900 mi).
First Launch: 1974.11.15.
Last Launch: 1981.10.06.
Number: 3 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • Oscar International series of amateur radio communications satellites. Operational, first launch 1961.12.12. Launched in a variety of configurations and by many nations. More...
  • ITOS American earth weather satellite. 8 launches, 1970.01.23 (ITOS 1) to 1976.07.29 (NOAA 5). ITOS was the follow-on to the TIROS series of polar-orbiting US weather satellites, and marked the beginning of the use of the NOAA designator. More...
  • Intasat Spanish communications technology satellite. One launch, 1974.11.15. Spanish communications satellite. More...
  • SME American solar satellite. One launch, 1981.10.06. The Solar Mesosphere Explorer satellite was developed to investigate the processes that create and destroy ozone in the Earth's upper atmosphere. More...
  • MicroSat SSTL British technology satellite. 3 launches, 1981.10.06 (CERISE) to 1990.01.22 (Oscar 14). Original version of the Surrey Microsat bus. More...

See also
  • Delta The Delta launch vehicle was America's longest-lived, most reliable, and lowest-cost space launch vehicle. Development began in 1955 and it continued in service in the 21st Century despite numerous candidate replacements. More...

Associated Manufacturers and Agencies
  • Douglas American manufacturer of rockets, spacecraft, and rocket engines. Boeing Huntington Beach, Huntington Beach, CA, USA. More...

Associated Programs
  • Oscar Amateur radio satellite network. For over a third of a century a series of OSCAR satellites have been launched in a variety of configurations and by many nations. More...
  • Tiros TIROS spacecraft were the beginning of a long series of polar-orbiting meteorological satellites. TIROS was followed by the TOS (TIROS Operational System) series, and then the ITOS (Improved TIROS) series, and later the NOAA series. TIROS spacecraft were developed by GSFC and managed by ESSA (Environmental Science Services Administration). The objective was to establish a global weather satellite system. 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 SLC2W Delta launch complex. Originally a Thor 75 SMS launch pad. Upgraded to a space launch complex in 1966. More...

Associated Stages
  • Castor 2 Solid propellant rocket stage. Loaded/empty mass 4,424/695 kg. Thrust 258.92 kN. Vacuum specific impulse 262 seconds. More...
  • Delta Thor ELT Lox/Kerosene propellant rocket stage. Loaded/empty mass 84,067/4,059 kg. Thrust 1,030.21 kN. Vacuum specific impulse 296 seconds. More...
  • Delta P N2O4/Aerozine-50 propellant rocket stage. Loaded/empty mass 5,434/820 kg. Thrust 41.92 kN. Vacuum specific impulse 301 seconds. More...

Delta 2310 Chronology


1974 November 15 - . 17:11 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 2310. LV Configuration: Delta 2310 592/D104.
  • NOAA 4 - . Payload: ITOS G. Mass: 340 kg (740 lb). Nation: USA. Agency: NOAA. Program: Tiros. Class: Earth. Type: Weather satellite. Spacecraft: ITOS. USAF Sat Cat: 7529 . COSPAR: 1974-089A. Apogee: 1,459 km (906 mi). Perigee: 1,445 km (897 mi). Inclination: 101.8000 deg. Period: 114.90 min. Summary: Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C)..
  • Intasat 1 - . Payload: Intasat. Mass: 20 kg (44 lb). Nation: Spain. Agency: INTA. Class: Technology. Type: Communications technology satellite. Spacecraft: Intasat. USAF Sat Cat: 7531 . COSPAR: 1974-089C. Apogee: 1,459 km (906 mi). Perigee: 1,442 km (896 mi). Inclination: 101.8000 deg. Period: 114.90 min.
  • Oscar 7 - . Payload: Amsat-Oscar-7. Mass: 29 kg (63 lb). Nation: USA. Agency: AmSat. Program: Oscar. Class: Communications. Type: Amateur radio communications satellite. Spacecraft: Oscar. USAF Sat Cat: 7530 . COSPAR: 1974-089B. Apogee: 1,459 km (906 mi). Perigee: 1,440 km (890 mi). Inclination: 101.8000 deg. Period: 114.90 min. AMSAT-OSCAR 7 was launched piggyback with ITOS-G (NOAA 4) and the Spanish INTASAT. The second phase 2 satellite (Phase II-B). Weight 28.6 kg. Octahedrally shaped 360 mm high and 424 mm in diameter. Circularly polarized canted turnstile VHF/UHF antenna system and HF dipole. Firsts: Satellite-to-satellite relay communication via AO-6; Early demonstrations of low-budget medical data relay and doppler location of ground transmitters for search-and-rescue operations were done using this satellite. AO-7 was fully operational for 6.5 years until a battery failed in mid 1981. However the satellite was still functional in day-side passes when its ever-degrading solar cells could function, and was still responding to amateurs as of August 2006. Additional Details: here....

1976 July 29 - . 17:07 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 2310. LV Configuration: Delta 2310 605/D126.
  • NOAA 5 - . Payload: ITOS H. Mass: 340 kg (740 lb). Nation: USA. Agency: NOAA. Program: Tiros. Class: Earth. Type: Weather satellite. Spacecraft: ITOS. USAF Sat Cat: 9057 . COSPAR: 1976-077A. Apogee: 1,523 km (946 mi). Perigee: 1,507 km (936 mi). Inclination: 102.3000 deg. Period: 116.30 min. Summary: Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C)..

1981 October 6 - . 11:27 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta 2310. LV Configuration: Delta 2310 639/D157.
  • SME - . Payload: Solar Mesosphere Explorer. Mass: 437 kg (963 lb). Nation: USA. Class: Astronomy. Type: X-ray astronomy satellite. Spacecraft: SME. Decay Date: 1991-03-05 . USAF Sat Cat: 12887 . COSPAR: 1981-100A. Apogee: 337 km (209 mi). Perigee: 335 km (208 mi). Inclination: 97.6000 deg. Period: 91.30 min. Summary: Solar Mesosphere Explorer. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C)..
  • Oscar 9 - . Payload: UoSAT 1. Mass: 52 kg (114 lb). Nation: UK. Agency: Surrey. Manufacturer: Surrey. Program: Oscar. Class: Communications. Type: Amateur radio communications satellite. Spacecraft: Microsat SSTL. Decay Date: 1989-10-13 . USAF Sat Cat: 12888 . COSPAR: 1981-100B. Apogee: 374 km (232 mi). Perigee: 372 km (231 mi). Inclination: 97.6000 deg. Period: 92.00 min. University of Surrey research microsatellite. Radio science; also carried amateur radio package. Communication and geophysics research satellite. Launch time 1127 GMT. Also registered by the United States in ST/SG/SER.E/59, with category D and orbital parameters 95.3 min, 531 x 533 km x 97.5 deg. UoSAT-OSCAR 9 was launched piggyback with Solar Mesosphere Explorer satellite. Weight 52 kg. Box shaped 740 x 420 x 420 mm. Deployable gravity gradient boom. Firsts: First on-board computer (IHU - Integrated Housekeeping Unit) for battery and attitude management, remote control, and experiments. Built by the University of Surrey in the United Kingdom, UO-9 was UoSAT's first experimental satellite. It was a scientific and educational low-Earth orbit satellite containing many experiments and beacons but no amateur transponders. UO-9 was fully operational until it re-entered October 13, 1989 from a decaying orbit after nine years of service.

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