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Other Designations: Defense Meteorological Satellite Program. Class: Earth. Type: Weather. Nation: USA. Agency: U.S. Air Force. Defense Meteorological Satellite Program.
SpecificationTotal Mass: 131 kg.
DMSP Block 4A Chronology
19 January 1965
DMSP-Block-4A F1 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 150 kg. Perigee: 462 km. Apogee: 833 km. Inclination: 98.8 deg. Defense Meteorological Satellite Program.
18 March 1965
DMSP-Block-4A F2 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 130 kg. Perigee: 139 km. Apogee: 146 km. Inclination: 99.0 deg. Defense Meteorological Satellite Program.
20 May 1965
DMSP-Block-4A F3 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 130 kg. Perigee: 503 km. Apogee: 731 km. Inclination: 98.1 deg. Defense Meteorological Satellite Program.
10 September 1965
DMSP-Block-4A F4 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 130 kg. Perigee: 635 km. Apogee: 993 km. Inclination: 98.5 deg. Defense Meteorological Satellite Program.
08 January 1966
DMSP-Block-4A F5 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. FAILURE: Second stage failed. Mass: 130 kg. Defense Meteorological Satellite Program.
31 March 1966
DMSP-Block-4A F6 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 130 kg. Perigee: 604 km. Apogee: 855 km. Inclination: 98.3 deg. Defense Meteorological Satellite Program.
16 September 1966
DMSP-Block-4A F7 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 125 kg. Perigee: 674 km. Apogee: 857 km. Inclination: 98.3 deg. Defense Meteorological Satellite Program.
08 February 1967
DMSP-Block-4A F8 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 130 kg. Perigee: 771 km. Apogee: 846 km. Inclination: 99.1 deg. Defense Meteorological Satellite Program; lower than planned orbit, but still operational.
23 August 1967
DMSP-Block-4A F9 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 130 kg. Perigee: 818 km. Apogee: 873 km. Inclination: 98.9 deg. Defense Meteorological Satellite Program.
11 October 1967
DMSP-Block-4A F10 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 130 kg. Perigee: 638 km. Apogee: 796 km. Inclination: 99.2 deg. Defense Meteorological Satellite Program.
23 May 1968
DMSP-Block-4A F11 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 130 kg. Perigee: 806 km. Apogee: 883 km. Inclination: 98.9 deg. Defense Meteorological Satellite Program.
23 October 1968
DMSP-Block-4A F12 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 130 kg. Perigee: 783 km. Apogee: 828 km. Inclination: 98.7 deg. Defense Meteorological Satellite Program.
23 July 1969
DMSP-Block-4A F13 Program: DMSP. Launch Site: Vandenberg . Launch Vehicle: Thor Burner. Mass: 130 kg. Perigee: 768 km. Apogee: 835 km. Inclination: 98.8 deg. Defense Meteorological Satellite Program.
Bibliography:- 126 - Bramscher, Robert G, Spaceflight, "A Survey of Launch Vehicle Failures", 1980, Volume 22, page 351.
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Last update 12 March 2001.
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