Encyclopedia Astronautica
Atlas E/OIS


American orbital launch vehicle. Atlas E + 1 x OIS upper stage.

Gross mass: 120,000 kg (260,000 lb).
Height: 28.70 m (94.10 ft).
Diameter: 3.05 m (10.00 ft).
Thrust: 1,731.00 kN (389,144 lbf).
Apogee: 800 km (490 mi).
First Launch: 1985.03.13.
Number: 1 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • Geosat American earth resources radar satellite. One launch, 1985.03.13. Geosat was a US Navy satellite designed to measure sea surface heights to within 5 cm. More...

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...

Associated Manufacturers and Agencies
  • Convair American manufacturer of rockets, spacecraft, and rocket engines. Convair, USA. 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 SLC3W Delta, Atlas launch complex. First designated LC1-1 and used to launch Atlas Agena B with Samos payloads. After Samos cancellation, rebuilt in 1963 to support launch of KH-4 Corona spysats atop Thor-Agena. Refurbished in 1973 to accomodate surplus Atlas ICBM's in space launch role. More...

Associated Stages
  • Atlas E/F Lox/Kerosene propellant rocket stage. Loaded/empty mass 117,826/4,926 kg. Thrust 386.30 kN. Vacuum specific impulse 316 seconds. More...
  • Atlas MA-3 Lox/Kerosene propellant rocket stage. Loaded/empty mass 3,174/3,174 kg. Thrust 1,644.96 kN. Vacuum specific impulse 290 seconds. More...
  • OIS Solid rocket stage. 27.00 kN (6,070 lbf) thrust. Mass 361 kg (796 lb). More...

Atlas E/OIS Chronology


1985 March 13 - . 02:00 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC3W. LV Family: Atlas. Launch Vehicle: Atlas E/OIS. LV Configuration: Atlas E/OIS 41E.
  • Geosat - . Mass: 635 kg (1,399 lb). Nation: USA. Agency: USN. Class: Earth. Type: Earth resources radar satellite. Spacecraft: Geosat. USAF Sat Cat: 15595 . COSPAR: 1985-021A. Apogee: 779 km (484 mi). Perigee: 775 km (481 mi). Inclination: 108.1000 deg. Period: 100.40 min. Summary: Ocean sea height mapping. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C)..

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