Encyclopedia Astronautica
Thor DSV-2U


American orbital launch vehicle. Single stage vehicle.

LEO Payload: 500 kg (1,100 lb) to a 300 km orbit at 28.00 degrees. Failures: 1. First Fail Date: 1980-07-15. Last Fail Date: 1980-07-15.

Status: Retired 1980.
Gross mass: 49,500 kg (109,100 lb).
Payload: 500 kg (1,100 lb).
Height: 23.00 m (75.00 ft).
Diameter: 2.44 m (8.00 ft).
Thrust: 750.00 kN (168,600 lbf).
Apogee: 300 km (180 mi).
First Launch: 1976.09.11.
Last Launch: 1980.07.15.
Number: 5 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • DMSP Block 5D American earth weather satellite. 5 launches, 1976.09.11 (AMS 1) to 1980.07.15 (AMS 5). Defense Meteorological Satellite Program. 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
  • DMSP The first CORONA photos in August 1960 convinced authorities that knowledge of cloud cover over Russia was necessary and could be obtained only via satellite. Since the civilian TIROS program could not yet meet the requirement, the Director, National Reconnaissance Office authorized an 'interim' effort - the Defense Meteorological Satellite Program. The satellite series continued to be updated and served into the 21st Century. 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 SLC10W Delta launch complex. Originally a Thor 75 SMS launch pad. Upgraded to a launch emplacement in 1965. More...

Associated Stages
  • Star 37XE Solid rocket stage. 45.00 kN (10,116 lbf) thrust. Mass 900 kg (1,984 lb). More...
  • Thor DM-19 Lox/Kerosene propellant rocket stage. Loaded/empty mass 49,340/3,125 kg. Thrust 758.71 kN. Vacuum specific impulse 282 seconds. More...

Thor DSV-2U Chronology


1976 September 11 - . 08:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor DSV-2U. LV Configuration: Thor DSV-2U 172.
  • AMS 1 - . Payload: DMSP 5D S-1 / OPS 5721. Mass: 450 kg (990 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 5D. USAF Sat Cat: 9415 . COSPAR: 1976-091A. Apogee: 833 km (517 mi). Perigee: 804 km (499 mi). Inclination: 98.5000 deg. Period: 101.30 min. Summary: Defense Meteorological Satellite Program..

1977 June 5 - . 02:59 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor DSV-2U. LV Configuration: Thor DSV-2U 183.
  • AMS 2 - . Payload: DMSP 5D S-2/Star 37S S/N 15003 / OPS 5644. Mass: 450 kg (990 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 5D. USAF Sat Cat: 10033 . COSPAR: 1977-044A. Apogee: 849 km (527 mi). Perigee: 788 km (489 mi). Inclination: 99.0000 deg. Period: 101.30 min. Summary: Defense Meteorological Satellite Program..

1978 May 1 - . 03:05 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor DSV-2U. LV Configuration: Thor DSV-2U 143.
  • AMS 3 - . Payload: DMSP 5D S-3 / OPS 6182. Mass: 513 kg (1,130 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 5D. USAF Sat Cat: 10820 . COSPAR: 1978-042A. Apogee: 799 km (496 mi). Perigee: 786 km (488 mi). Inclination: 98.7000 deg. Period: 100.70 min. Summary: Defense Meteorological Satellite Program..

1979 June 6 - . 18:22 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor DSV-2U. LV Configuration: Thor DSV-2U 264.
  • AMS 4 - . Payload: DMSP 5D S-5 / OPS 5390. Mass: 513 kg (1,130 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 5D. USAF Sat Cat: 11389 . COSPAR: 1979-050A. Apogee: 826 km (513 mi). Perigee: 805 km (500 mi). Inclination: 98.6000 deg. Period: 101.20 min. Summary: Defense Meteorological Satellite Program..

1980 July 15 - . 02:22 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor DSV-2U. LV Configuration: Thor DSV-2U 304. FAILURE: Separation problem gutted wiring from spacecraft.. Failed Stage: 2.
  • AMS 5 - . Payload: DMSP 5D S-4. Mass: 513 kg (1,130 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 5D. Decay Date: 1980-07-14 . COSPAR: F800715A. Defense Meteorological Satellite Program. Although there was a press release immediately after the launch (by the spacecraft SPO) that said the 2nd stage motor exploded, in reality the problem was found to be due to poor design of the electrical connectors between the 2nd and third stages and a separation problem that ripped the wiring out of the spacecraft.

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