Encyclopedia Astronautica
Delta 7920H



delta70h.jpg
Delta 7000H
Credit: © Mark Wade
American orbital launch vehicle. Version of Delta 7000 using much larger GEM 46 solid rocket motors originally developed for the Delta 3.

LEO Payload: 1,816 kg (4,003 lb). Payload: 1,000 kg (2,200 lb) to a earth escape.

Status: Active.
Gross mass: 286,000 kg (630,000 lb).
Payload: 1,816 kg (4,003 lb).
Height: 39.00 m (127.00 ft).
Diameter: 2.44 m (8.00 ft).
Thrust: 4,510.00 kN (1,013,880 lbf).
First Launch: 2003.08.25.
Last Launch: 2011.09.10.
Number: 3 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • MER American Mars lander. 2 launches, 2003.06.10 (Spirit (Mars Exploration Rover A, MER-2)) to 2003.07.08 (Opportunity (Mars Exploration Rover B, MER-1)). NASA's rover mission design for the 2003 Mars launch opportunity. More...
  • SIRTF American infrared astronomy satellite. One launch, 2003.08.25. The SIRTF (Space Infrared Telescope Facility) was planned as a 1 meter class, cryogenically cooled space telescope to be operated as an observatory for infrared astronomy. More...
  • GLAST American gamma ray astronomy satellite. One launch, 2008.06.11, Fermi Gamma Ray Space Telescope. Gamma-ray Large Area Space Telescope; renamed Fermi GST after launch. 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 LC17B Delta launch complex. Part of a dual launch pad complex built for the Thor ballistic missile program in 1956. Upgraded over the decades for use with Thor, Delta, Delta II, and Delta III launch vehicles, it remained in use for over half a century. More...

Associated Stages
  • 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...
  • 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...
  • GEM 46 Solid propellant rocket stage. Loaded/empty mass 19,327/2,282 kg. Thrust 628.31 kN. Vacuum specific impulse 278 seconds. Nine 1168-mm (46 in.) diameter Alliant graphite epoxy motors (GEM LDXLs) (strap-on solid rocket motors - SSRMs) augment the first-stage performance of the Delta III and were a direct evolution from the GEMs used on Delta II. More...
  • PAM-D Solid propellant rocket stage. Loaded/empty mass 2,141/232 kg. Thrust 67.16 kN. Vacuum specific impulse 292 seconds. More...

Delta 7920H Chronology


2003 August 25 - . 05:35 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. Launch Pad: SLC17B. LV Family: Delta. Launch Vehicle: Delta 7920H. LV Configuration: Delta 7920H D300.
  • SIRTF - . Mass: 923 kg (2,034 lb). Nation: USA. Agency: NASA. Class: Astronomy. Type: Infrared astronomy satellite. Spacecraft: SIRTF. USAF Sat Cat: 27871 . COSPAR: 2003-038A. Originally to have launched January 9, 2003. Delayed six times. The Space Infrared Telescope Facility (SIRTF) was the last of NASA's 'Great Observatories'. It had a 0.85-meter infrared telescope, with a liquid-helium cooled focal plane carrying the three main instruments. SIRTF was launched by the second Delta II Heavy. The second stage entered a 166 x 167 km x 31.5 deg Earth parking orbit, and after about 33 minutes of coast, passing south of Madagascar, restarted at 0613 UTC to enter a hyperbolic orbit with a perigee of 170 km, an eccentricity of 1.0061, and a velocity of 11.05 km/s. This placed it in a solar orbit of 0.996 x 1.019 AU x 1.14 deg with a year about 4 days longer than Earth's.

2008 June 11 - . 16:05 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. Launch Pad: SLC17B. LV Family: Delta. Launch Vehicle: Delta 7920H.
  • Fermi Gamma Ray Space Telescope - . Nation: USA. Agency: Martin. Class: Astronomy. Type: Gamma ray astronomy satellite. Spacecraft: GLAST. USAF Sat Cat: 33053 . COSPAR: 2008-029A. Apogee: 562 km (349 mi). Perigee: 542 km (336 mi). Inclination: 25.6000 deg. Period: 95.70 min. Summary: Gamma-ray Large Area Space Telescope; renamed Fermi GST after launch..

2011 September 10 - . 13:08 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. Launch Pad: SLC17B. LV Family: Delta. Launch Vehicle: Delta 7920H.
  • Grail A - . Nation: USA. Class: Moon. Type: Lunar probe. Spacecraft: Grail. USAF Sat Cat: 37801 . COSPAR: 2011-046A. NASA dual-spacecraft lunar mission. Grail A was deployed from the Delta upper stage at 14:28 GMT and Grail B at 14:37 GMT. The spacecraft will reach the Sun-Earth L1 point 1.5 million km from Earth and then fall back towards the Moon. Lunar orbit insertion is scheduled for 01:00 GMt on 1 January 2012 for Grail A, and at 02:00 GMT on 2 January for Grail B.
  • Grail B - . Nation: USA. Class: Moon. Type: Lunar probe. Spacecraft: Grail. USAF Sat Cat: 37802 . COSPAR: 2011-046B.

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