Encyclopedia Astronautica
OV5


American earth magnetosphere satellite. 8 launches, 1967.04.28 (OV5-03) to 1969.05.23 (OV5-09). OV5 was a version of the USAF Environmental Research Satellites dedicated to radiation research and VLF plasma wave detection.

The octagonal Environmental Research Satellites were designed for piggyback launching from large primary mission vehicles. Ranging in mass from 0.7 to 45 kg, and carrying from 1 to 14 experiments, the ERS spacecraft provided an inexpensive, flexible vehicle capable of making scientific and engineering measurements in space.

A major role of the ERS satellites was to act as a test bed to determine the reliability of improved components and subsystems destined for use in later generations of spacecraft. A unique feature of the system was its capability to function without a battery. The key to this advantage was the design which permitted solar cells, fastened to all exterior surfaces of the vehicle, to maintain constant exposure of about 15 percent of the sun. The ERS was a small satellite, measuring in one version only 22 cm on a side and weighing 680 g; the larger version weighed 45 kg and was a 51 cm diameter cylinder. The 8-sided version was designated the OV-5 and became a part of a program conducted by the Air Force Office of Aerospace Research. Prime Contractor was TRW Systems Group of TRW Inc.

First Launch: 1967.04.28.
Last Launch: 1969.05.23.
Number: 8 .

More... - Chronology...


Associated Countries
See also
  • Atlas The Atlas rocket, originally developed as America's first ICBM, was the basis for most early American space exploration and was that country's most successful medium-lift commercial launch vehicle. It launched America's first astronaut into orbit; the first generations of spy satellites; the first lunar orbiters and landers; the first probes to Venus, Mars, Mercury, Jupiter, and Saturn; and was America's most successful commercial launcher of communications satellites. Its innovative stage-and-a-half and 'balloon tank' design provided the best dry-mass fraction of any launch vehicle ever built. It was retired in 2004 after 576 launches in a 47-year career. More...
  • Titan The Titan launch vehicle family was developed by the United States Air Force to meet its medium lift requirements in the 1960's. The designs finally put into production were derived from the Titan II ICBM. Titan outlived the competing NASA Saturn I launch vehicle and the Space Shuttle for military launches. It was finally replaced by the USAF's EELV boosters, the Atlas V and Delta IV. Although conceived as a low-cost, quick-reaction system, Titan was not successful as a commercial launch vehicle. Air Force requirements growth over the years drove its costs up - the Ariane using similar technology provided lower-cost access to space. More...

Associated Launch Vehicles
  • Atlas The Atlas rocket, originally developed as America's first ICBM, was the basis for most early American space exploration and was that country's most successful medium-lift commercial launch vehicle. It launched America's first astronaut into orbit; the first generations of spy satellites; the first lunar orbiters and landers; the first probes to Venus, Mars, Mercury, Jupiter, and Saturn; and was America's most successful commercial launcher of communications satellites. Its innovative stage-and-a-half and 'balloon tank' design provided the best dry-mass fraction of any launch vehicle ever built. It was retired in 2004 after 576 launches in a 47-year career. More...
  • Titan American orbital launch vehicle. The Titan launch vehicle family was developed by the United States Air Force to meet its medium lift requirements in the 1960's. The designs finally put into production were derived from the Titan II ICBM. Titan outlived the competing NASA Saturn I launch vehicle and the Space Shuttle for military launches. It was finally replaced by the USAF's EELV boosters, the Atlas V and Delta IV. Although conceived as a low-cost, quick-reaction system, Titan was not successful as a commercial launch vehicle. Air Force requirements growth over the years drove its costs up - the Ariane using similar technology provided lower-cost access to space. More...
  • Atlas F American intercontinental ballistic missile. Final operational version of Atlas ICBM. Differed in guidance systems. Deployed as missiles from 1961 to 1966. After retirement, the ICBM's were refurbished and used for over thirty years as space launch vehicles. More...
  • Titan 3C American orbital launch vehicle. Titan 3A with five segment solid motors. Man-rated design originally developed for Dynasoar spaceplane. More...

Associated Manufacturers and Agencies
  • USAF American agency overseeing development of rockets and spacecraft. United States Air Force, USA. More...
  • TRW American manufacturer of rockets, spacecraft, and rocket engines. TRW Corporation, Redondo Beach, CA, USA. More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
  • JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: here.
  • McDowell, Jonathan, Launch Log, October 1998. Web Address when accessed: here.
  • Aerospace Yearbook, 1966,

Associated Launch Sites
  • Cape Canaveral America's largest launch center, used for all manned launches. Today only six of the 40 launch complexes built here remain in use. Located at or near Cape Canaveral are the Kennedy Space Center on Merritt Island, used by NASA for Saturn V and Space Shuttle launches; Patrick AFB on Cape Canaveral itself, operated the US Department of Defense and handling most other launches; the commercial Spaceport Florida; the air-launched launch vehicle and missile Drop Zone off Mayport, Florida, located at 29.00 N 79.00 W, and an offshore submarine-launched ballistic missile launch area. All of these take advantage of the extensive down-range tracking facilities that once extended from the Cape, through the Caribbean, South Atlantic, and to South Africa and the Indian Ocean. More...
  • 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 SLC3E Atlas V, Atlas launch complex. Atlas test facility, originally designated PALC1-2, then LC1-2, and finally upgraded to a Space Launch Facility in 1966. More...
  • Cape Canaveral LC41 Titan, Atlas V launch complex. Complexes 40 and 41 were constructed as part of the Integrate-Transfer-Launch (ITL) Titan launch facility at the north end of Cape Canaveral in the early 1960s. Over the next three decades, the complexes supported a wide variety of military space missions involving Titan IIIC, Titan 34D and Titan IV. Complex 41 was deactivated at the end of 1977, then upgraded for the Titan IV program in the 1986-88 period. In October 1999, Complex 41 was demolished with high explosives in order for a new pad for launch of the Atlas 5 rocket to be erected. By then it had been the starting point for 27 Titan flights. More...

OV5 Chronology


1967 April 28 - . 10:01 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. LV Family: Titan. Launch Vehicle: Titan 3C. LV Configuration: Titan IIIC 3C-10.
  • OV5-03 - . Payload: ERS 20. Mass: 9.00 kg (19.80 lb). Nation: USA. Agency: USAF. Class: Earth. Type: Magnetosphere satellite. Spacecraft: OV5. USAF Sat Cat: 2768 . COSPAR: 1967-040D. Apogee: 111,229 km (69,114 mi). Perigee: 8,604 km (5,346 mi). Inclination: 32.8000 deg. Period: 2,829.60 min. Summary: Radiation research; deployed ERS 20. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .
  • OV5-01 - . Payload: ERS 27. Mass: 9.00 kg (19.80 lb). Nation: USA. Agency: USAF. Class: Earth. Type: Magnetosphere satellite. Spacecraft: OV5. USAF Sat Cat: 2769 . COSPAR: 1967-040E. Apogee: 110,746 km (68,814 mi). Perigee: 8,979 km (5,579 mi). Inclination: 32.8000 deg. Period: 2,827.80 min. Summary: Materials research; deployed ERS 27. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

1968 August 16 - . 20:57 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC3E. LV Family: Atlas. Launch Vehicle: Atlas Burner 2. LV Configuration: Atlas Burner 2 7004 / Burner-2 (No Agena). FAILURE: Failure.
  • OV5-8 - . Payload: OV5-8. Nation: USA. Agency: USAF AFSC. Spacecraft: OV5. COSPAR: F680816H.

1968 September 26 - . 07:37 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. LV Family: Titan. Launch Vehicle: Titan 3C. LV Configuration: Titan IIIC 3C-5.
  • OV5-04 - . Payload: ERS 21. Mass: 13 kg (28 lb). Nation: USA. Agency: USAF. Class: Earth. Type: Magnetosphere satellite. Spacecraft: OV5. Completed Operations Date: 1968-09-01 . USAF Sat Cat: 3430 . COSPAR: 1968-081C. Apogee: 35,786 km (22,236 mi). Perigee: 35,775 km (22,229 mi). Inclination: 3.0000 deg. Period: 1,435.80 min. Summary: Examined heat transfer in liquids in zero-g. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). Last known longitude (19 July 1995) 138.85 deg E drifting at 0.103 deg W per day..
  • OV5-02 - . Payload: ERS 28. Mass: 10 kg (22 lb). Nation: USA. Agency: USAF. Class: Earth. Type: Magnetosphere satellite. Spacecraft: OV5. Decay Date: 1971-02-15 . USAF Sat Cat: 3429 . COSPAR: 1968-081B. Apogee: 35,786 km (22,236 mi). Perigee: 184 km (114 mi). Inclination: 26.4000 deg. Period: 630.80 min. Summary: Particle radiation data. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

1969 May 23 - . 07:57 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. LV Family: Titan. Launch Vehicle: Titan 3C. LV Configuration: Titan IIIC 3C-15.
  • OV5-05 - . Payload: ERS 29. Mass: 259 kg (570 lb). Nation: USA. Agency: USAF. Class: Earth. Type: Magnetosphere satellite. Spacecraft: OV5. USAF Sat Cat: 3950 . COSPAR: 1969-046A. Apogee: 69,130 km (42,950 mi). Perigee: 59,630 km (37,050 mi). Inclination: 33.0000 deg. Period: 3,121.90 min. Summary: Space craft engaged in investigation of spaceflight techniques and technology (US Cat A)..
  • OV5-06 - . Payload: ERS 26. Mass: 259 kg (570 lb). Nation: USA. Agency: USAF. Class: Earth. Type: Magnetosphere satellite. Spacecraft: OV5. USAF Sat Cat: 3951 . COSPAR: 1969-046B. Apogee: 69,022 km (42,888 mi). Perigee: 59,540 km (36,990 mi). Inclination: 33.6000 deg. Period: 3,115.40 min. Summary: Space craft engaged in investigation of spaceflight techniques and technology (US Cat A)..
  • OV5-09 - . Mass: 11 kg (24 lb). Nation: USA. Agency: USAF. Class: Earth. Type: Magnetosphere satellite. Spacecraft: OV5. USAF Sat Cat: 3952 . COSPAR: 1969-046C. Apogee: 69,011 km (42,881 mi). Perigee: 59,543 km (36,998 mi). Inclination: 33.5000 deg. Period: 3,115.10 min. Summary: VLF plasma wave detection. Space craft engaged in investigation of spaceflight techniques and technology (US Cat A). .

Home - Browse - Contact
© / Conditions for Use