Encyclopedia Astronautica
Delta 7920-8

American orbital launch vehicle. Three stage vehicle consisting of 9 x GEM-40 + 1 x EELT Thor/RS-27A + 1 x Delta K with 2.4 m (8 foot) diameter fairing)

Status: Active.
Gross mass: 220,000 kg (480,000 lb).
Height: 39.00 m (127.00 ft).
Diameter: 2.44 m (8.00 ft).
Thrust: 4,000.00 kN (899,200 lbf).
Apogee: 400,000 km (240,000 mi).
First Launch: 1997.08.25.
Number: 1 .

More... - Chronology...

Associated Countries
Associated Spacecraft
  • ACE American solar satellite. One launch, 1997.08.25. 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 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...
  • Cape Canaveral LC17A Delta launch complex. Part of a dual launch pad complex built for the Thor ballistic missile program in 1956. Pad 17A supported Thor, Delta, and Delta II launches into the 21st Century. More...

Associated Stages
  • Delta Thor XLT-C Lox/Kerosene propellant rocket stage. Loaded/empty mass 101,900/5,900 kg. Thrust 1,054.20 kN. Vacuum specific impulse 302 seconds. More...
  • Delta K N2O4/Aerozine-50 propellant rocket stage. Loaded/empty mass 6,954/950 kg. Thrust 43.63 kN. Vacuum specific impulse 319 seconds. More...
  • GEM 40 Solid propellant rocket stage. Loaded/empty mass 13,064/1,361 kg. Thrust 492.93 kN. Vacuum specific impulse 274 seconds. More...

Delta 7920-8 Chronology

1997 August 25 - . 14:39 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Delta. Launch Vehicle: Delta 7920-8. LV Configuration: Delta 7920-8 D247.
  • ACE - . Payload: ACE. Nation: USA. Agency: NASA Greenbelt. Manufacturer: APL. Class: Earth. Type: Magnetosphere satellite. Spacecraft: ACE. USAF Sat Cat: 24912 . COSPAR: 1997-045A. Apogee: 128,196 km (79,657 mi). Perigee: 176 km (109 mi). Period: 86,411.37 min. Summary: Earth-Sun L1 point.

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