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Thor MG-18
Part of Thor Family
American orbital launch vehicle. Two stage vehicle consisting of 1 x Thor DM-18A + 1 x MG-18

Status: Retired 1965. First Launch: 1965-01-19. Last Launch: 1965-03-18. Number: 2 . Thrust: 668.00 kN (150,172 lbf). Gross mass: 50,000 kg (110,000 lb). Height: 23.00 m (75.00 ft). Diameter: 2.44 m (8.00 ft). Apogee: 1,000 km (600 mi).


More at: Thor MG-18.

Family: orbital launch vehicle. Country: USA. Spacecraft: DMSP Block 4A. Projects: DMSP. Launch Sites: Vandenberg, Vandenberg SLC10W. Stages: Thor DM-19, MG-18. Agency: Douglas.

1965 January 19 - . 05:03 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Thor. Launch Vehicle: Thor MG-18.
  • DMSP-Block-4A F1 - . Payload: DAPP 10 / OPS 7040. Mass: 150 kg (330 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft Bus: DMSP Block 4/5 satellites. Spacecraft: DMSP Block 4A. Decay Date: 1979-07-13 . USAF Sat Cat: 973 . COSPAR: 1965-003A. Apogee: 833 km (517 mi). Perigee: 462 km (287 mi). Inclination: 98.8000 deg. Period: 97.60 min.

    The first Air Force Thor/Altair (Burner I) space booster was launched from Vandenberg AFB. The Altair upper stage was the fourth stage of the Scout rocket. Defense Meteorological Satellite Program. Launch date was January 18, 1965. The launch was successful and correct orbit was achieved. However, the heat shield on the second stage did not deploy correctly and the mission objectives were not fully realized. This first Burner I bird is distinguishable in photos by its black second stage.


1965 March 18 - . 04:43 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Thor. Launch Vehicle: Thor MG-18.
  • DMSP-Block-4A F2 - . Payload: DAPP 11 / OPS 7353. Mass: 130 kg (280 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft Bus: DMSP Block 4/5 satellites. Spacecraft: DMSP Block 4A. Decay Date: 1989-12-31 . USAF Sat Cat: 1273 . COSPAR: 1965-021A. Apogee: 146 km (90 mi). Perigee: 139 km (86 mi). Inclination: 99.0000 deg. Period: 87.30 min. Defense Meteorological Satellite Program. A fully successful launch with all objectives met. The night launch time of 2100 hrs Vandenberg time with a 5 minute launch window was the same for both the first and second Burner I launches..


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