Encyclopedia Astronautica
Thor Burner 2


American orbital launch vehicle. Two stage vehicle consisting of 1 x Thor DM-18A + 1 x Star 37B

Status: Retired 1971.
Gross mass: 50,000 kg (110,000 lb).
Height: 22.40 m (73.40 ft).
Diameter: 2.44 m (8.00 ft).
Thrust: 750.00 kN (168,600 lbf).
Apogee: 1,000 km (600 mi).
First Launch: 1966.09.16.
Last Launch: 1971.06.08.
Number: 12 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • SECOR American earth geodetic satellite. 13 launches, 1962.01.24 (Secor) to 1969.04.14 (SECOR 13). More...
  • Calsphere American military target satellite. 11 launches, 1964.10.06 (Calsphere 1) to 1971.02.17 (Calsphere 5). Radar calibration objects (but also cover for other classified subsatellites). More...
  • DMSP Block 4A American earth weather satellite. 13 launches, 1965.01.19 (DMSP-Block-4A F1) to 1969.07.23 (DMSP-Block-4A F13). Defense Meteorological Satellite Program. More...
  • Aurora American earth magnetosphere satellite. One launch, 1967.06.29. Investigated aurora borealis. More...
  • DMSP Block 5A American earth weather satellite. 3 launches, 1970.02.11 (DMSP-Block-5A F1) to 1971.02.17 (DMSP Block 5A F3). Defense Meteorological Satellite Program. More...
  • SESP American military technology satellite. 3 launches, 1971.06.08 (SESP 70-1) to 1976.07.08 (SESP 74-2). Space craft engaged in investigation of spaceflight techniques and technology. 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
  • Burner 2 Solid propellant rocket stage. Loaded/empty mass 774/116 kg. Thrust 43.55 kN. Vacuum specific impulse 285 seconds. Burner II was a launch vehicle upper stage developed by Boeing for the Air Force Space Systems Division. It was the first solid-fuel upper stage with full control and guidance capability developed for general space applications. 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 Burner 2 Chronology


1966 September 16 - . 04:36 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 167.
  • DMSP-Block-4A F7 - . Payload: DAPP 1416 (FTV-3) / OPS 6026. Mass: 125 kg (275 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 4A. USAF Sat Cat: 2418 . COSPAR: 1966-082A. Apogee: 857 km (532 mi). Perigee: 674 km (418 mi). Inclination: 98.3000 deg. Period: 100.20 min. Summary: Defense Meteorological Satellite Program..

1967 February 8 - . 08:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 169.
  • DMSP-Block-4A F8 - . Payload: DAPP 2418 (FTV-2) / OPS 6073. Mass: 130 kg (280 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 4A. USAF Sat Cat: 2669 . COSPAR: 1967-010A. Apogee: 846 km (525 mi). Perigee: 771 km (479 mi). Inclination: 99.1000 deg. Period: 101.10 min. Summary: Defense Meteorological Satellite Program; lower than planned orbit, but still operational..

1967 June 29 - . 21:01 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 171.
  • SECOR 9 - . Payload: EGRS 9. Mass: 20 kg (44 lb). Nation: USA. Agency: USA ACE. Class: Earth. Type: Geodetic satellite. Spacecraft: SECOR. USAF Sat Cat: 2861 . COSPAR: 1967-065A. Apogee: 3,940 km (2,440 mi). Perigee: 3,803 km (2,363 mi). Inclination: 90.2000 deg. Period: 172.10 min. Summary: Location survey. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .
  • Aurora 1 - . Payload: Aurora (P 67-1). Mass: 21 kg (46 lb). Nation: USA. Agency: USN. Class: Earth. Type: Magnetosphere satellite. Spacecraft: Aurora. USAF Sat Cat: 2876 . COSPAR: 1967-065B. Apogee: 3,937 km (2,446 mi). Perigee: 3,808 km (2,366 mi). Inclination: 90.2000 deg. Period: 172.10 min. Summary: Investigated aurora borealis. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

1967 August 23 - . 04:41 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 266.
  • DMSP-Block-4A F9 - . Payload: DAPP 3419 (FTV-4) / OPS 7202. Mass: 130 kg (280 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 4A. USAF Sat Cat: 2920 . COSPAR: 1967-080A. Apogee: 873 km (542 mi). Perigee: 818 km (508 mi). Inclination: 98.9000 deg. Period: 101.90 min. Summary: Defense Meteorological Satellite Program..

1967 October 11 - . 07:57 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 268.
  • DMSP-Block-4A F10 - . Payload: DAPP 4417 (FTV-5) / OPS 1264. Mass: 130 kg (280 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 4A. USAF Sat Cat: 2980 . COSPAR: 1967-096A. Apogee: 796 km (494 mi). Perigee: 638 km (396 mi). Inclination: 99.2000 deg. Period: 99.10 min. Summary: Defense Meteorological Satellite Program..

1968 May 23 - . 04:38 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 277.
  • DMSP-Block-4A F11 - . Payload: DAPP 4B F-1 (FTV-8) / OPS 7869. Mass: 130 kg (280 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 4A. USAF Sat Cat: 3266 . COSPAR: 1968-042A. Apogee: 883 km (548 mi). Perigee: 806 km (500 mi). Inclination: 98.9000 deg. Period: 101.80 min. Summary: Defense Meteorological Satellite Program..

1968 October 23 - . 04:34 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 173.
  • DMSP-Block-4A F12 - . Payload: DAPP 6422 (FTV-7) / OPS 4078. Mass: 130 kg (280 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 4A. USAF Sat Cat: 3510 . COSPAR: 1968-092A. Apogee: 828 km (514 mi). Perigee: 783 km (486 mi). Inclination: 98.7000 deg. Period: 101.00 min. Summary: Defense Meteorological Satellite Program..

1969 July 23 - . 04:39 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 279.
  • DMSP-Block-4A F13 - . Payload: DAPP 7421 (FTV-6) / OPS 1127. Mass: 130 kg (280 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 4A. USAF Sat Cat: 4047 . COSPAR: 1969-062A. Apogee: 835 km (518 mi). Perigee: 768 km (477 mi). Inclination: 98.8000 deg. Period: 100.90 min. Summary: Defense Meteorological Satellite Program..

1970 February 11 - . 08:40 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 287.
  • DMSP-Block-5A F1 - . Payload: DAPP 1524 / OPS 0054. Mass: 195 kg (429 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 5A. USAF Sat Cat: 4331 . COSPAR: 1970-012A. Apogee: 840 km (520 mi). Perigee: 749 km (465 mi). Inclination: 98.8000 deg. Period: 100.80 min. Summary: Defense Meteorological Satellite Program..

1970 September 3 - . 08:39 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 288.
  • DMSP-Block-5A F2 - . Payload: DAPP 2525 / OPS 0203. Mass: 195 kg (429 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 5A. USAF Sat Cat: 4512 . COSPAR: 1970-070A. Apogee: 837 km (520 mi). Perigee: 739 km (459 mi). Inclination: 99.0000 deg. Period: 100.60 min. Summary: Defense Meteorological Satellite Program..

1971 February 17 - . 03:52 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 249.
  • DMSP-Block-5A F3 - . Payload: DAPP 3526 / OPS 5268. Mass: 195 kg (429 lb). Nation: USA. Agency: USAF. Program: DMSP. Class: Earth. Type: Weather satellite. Spacecraft: DMSP Block 5A. USAF Sat Cat: 4953 . COSPAR: 1971-012A. Apogee: 799 km (496 mi). Perigee: 741 km (460 mi). Inclination: 98.7000 deg. Period: 100.20 min. Summary: Defense Meteorological Satellite Program..
  • Calsphere 3A - . Payload: NRL PL170A / OPS 5268. Mass: 1.00 kg (2.20 lb). Nation: USA. Agency: NRL. Class: Military. Type: Radar calibration target. Spacecraft: Calsphere. Decay Date: 1989-10-17 . USAF Sat Cat: 4957 . COSPAR: 1971-012C. Apogee: 531 km (329 mi). Perigee: 509 km (316 mi). Inclination: 98.4000 deg. Period: 95.00 min. Summary: Radar calibarion sphere. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .
  • Calsphere 4 - . Payload: NRL PL170B / OPS 5268. Mass: 1.00 kg (2.20 lb). Nation: USA. Agency: NRL. Class: Military. Type: Radar calibration target. Spacecraft: Calsphere. Decay Date: 1989-09-20 . USAF Sat Cat: 4958 . COSPAR: 1971-012D. Apogee: 502 km (311 mi). Perigee: 486 km (301 mi). Inclination: 98.4000 deg. Period: 94.50 min. Summary: Radar calibarion sphere. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .
  • Calsphere 5 - . Payload: NRL PL170C / OPS 5268. Mass: 1.00 kg (2.20 lb). Nation: USA. Agency: NRL. Class: Military. Type: Radar calibration target. Spacecraft: Calsphere. Decay Date: 1990-01-07 . USAF Sat Cat: 4963 . COSPAR: 1971-012E. Apogee: 360 km (220 mi). Perigee: 340 km (210 mi). Inclination: 98.2000 deg. Period: 91.50 min. Summary: Radar calibarion sphere. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

1971 June 8 - . 14:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC10W. LV Family: Delta. Launch Vehicle: Thor Burner 2. LV Configuration: Thor Burner 2 210.
  • SESP 70-1 - . Payload: P70-1 / Burner II No. 12 / OPS 3850. Mass: 260 kg (570 lb). Nation: USA. Agency: USAF STP. Class: Technology. Type: Military technology satellite. Spacecraft: SESP. Decay Date: 1982-01-31 . USAF Sat Cat: 5285 . COSPAR: 1971-054A. Apogee: 580 km (360 mi). Perigee: 544 km (338 mi). Inclination: 90.2000 deg. Period: 95.80 min. Summary: Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

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