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Orbital launch vehicle. Year: 1976. Family: Delta. Country: USA. Status: Out of production. Single stage vehicle consisting of 1 x Thor DM-18A Manufacturer: Douglas. Launches: 5. Failures: 1. Success Rate: 80.00%. First Launch Date: 1976-09-11. Last Launch Date: 1980-07-15. Launch data is: complete. LEO Payload: 500 kg (1,100 lb). to: 300 km Orbit. at: 28.00 degrees. Apogee: 1,000 km (600 mi). Associated Spacecraft: DMSP Block 5D. Liftoff Thrust: 750.000 kN (168,600 lbf). Total Mass: 49,500 kg (109,100 lb). Core Diameter: 2.44 m (8.00 ft). Total Length: 23.00 m (75.00 ft).
Thor DSV-2U Chronology 1976 September 11 - 08:00 GMT - Launch Site: Vandenberg. Launch Complex: SLC10. Launch Pad: SLC10W. Launch Vehicle: Thor DSV-2U. Model: Thor DSV-2U. LV Configuration: Thor DSV-2U 172. - AMS 1 Nation: USA. Program: DMSP. Payload: DMSP 5D S-1. Mass: 450 kg (990 lb). Class: Earth. Type: Weather. Spacecraft: DMSP Block 5D. Agency: USAF. Perigee: 804 km (499 mi). Apogee: 833 km (517 mi). Inclination: 98.50 deg. Period: 101.30 min. COSPAR: 1976-091A. USAF Sat Cat: 9415. Defense Meteorological Satellite Program. References: 1, 2, 5, 6.
1977 June 5 - 02:59 GMT - Launch Site: Vandenberg. Launch Complex: SLC10. Launch Pad: SLC10W. Launch Vehicle: Thor DSV-2U. Model: Thor DSV-2U. LV Configuration: Thor DSV-2U 183. - AMS 2 Nation: USA. Program: DMSP. Payload: DMSP 5D S-2/Star 37S S/N 15003. Mass: 450 kg (990 lb). Class: Earth. Type: Weather. Spacecraft: DMSP Block 5D. Agency: USAF. Perigee: 788 km (489 mi). Apogee: 849 km (527 mi). Inclination: 99.00 deg. Period: 101.30 min. COSPAR: 1977-044A. USAF Sat Cat: 10033. Defense Meteorological Satellite Program. References: 1, 2, 5, 6.
1978 May 1 - 03:05 GMT - Launch Site: Vandenberg. Launch Complex: SLC10. Launch Pad: SLC10W. Launch Vehicle: Thor DSV-2U. Model: Thor DSV-2U. LV Configuration: Thor DSV-2U 143. - AMS 3 Nation: USA. Program: DMSP. Payload: DMSP 5D S-3. Mass: 513 kg (1,130 lb). Class: Earth. Type: Weather. Spacecraft: DMSP Block 5D. Agency: USAF. Perigee: 786 km (488 mi). Apogee: 799 km (496 mi). Inclination: 98.70 deg. Period: 100.70 min. COSPAR: 1978-042A. USAF Sat Cat: 10820. Defense Meteorological Satellite Program. References: 1, 2, 5, 6.
1979 June 6 - 18:22 GMT - Launch Site: Vandenberg. Launch Complex: SLC10. Launch Pad: SLC10W. Launch Vehicle: Thor DSV-2U. Model: Thor DSV-2U. LV Configuration: Thor DSV-2U 264. - AMS 4 Nation: USA. Program: DMSP. Payload: DMSP 5D S-5. Mass: 513 kg (1,130 lb). Class: Earth. Type: Weather. Spacecraft: DMSP Block 5D. Agency: USAF. Perigee: 805 km (500 mi). Apogee: 826 km (513 mi). Inclination: 98.60 deg. Period: 101.20 min. COSPAR: 1979-050A. USAF Sat Cat: 11389. Defense Meteorological Satellite Program. References: 1, 2, 5, 6.
1980 July 15 - 02:22 GMT - Launch Site: Vandenberg. Launch Complex: SLC10. Launch Pad: SLC10W. Launch Vehicle: Thor DSV-2U. Model: Thor DSV-2U. LV Configuration: Thor DSV-2U 304. FAILURE: Separation problem gutted wiring from spacecraft. - AMS 5 Nation: USA. Program: DMSP. Payload: DMSP 5D S-4. Mass: 513 kg (1,130 lb). Class: Earth. Type: Weather. Spacecraft: DMSP Block 5D. Agency: U.S. Air Force. COSPAR: F800715A. Decay Date: 1980-07-14. 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.References: 5.
Bibliography and Further Reading - McDowell, Jonathan, Jonathan's Space Home Page, Harvard University, 1997-present. Jonathan McDowell's complete on-line listing of all objects orbited and over 20,000 rocket launches Accessed at: http://www.planet4589.org/jsr.html.
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