Encyclopedia Astronautica
Atlas V 421


American orbital launch vehicle. Atlas V with 4-m diameter payload fairing, single engine Centaur upper stage, and two strap-on solid boosters. Payloads: 10,168 kg (22,416 lb) to sun synchronous orbit; 7,000 kg (15,432 lb) to geosynchronous transfer orbit.

Status: Active.
Gross mass: 435,000 kg (959,000 lb).
Payload: 10,168 kg (22,416 lb).
Height: 59.10 m (193.80 ft).
Diameter: 3.81 m (12.49 ft).
Span: 6.91 m (22.67 ft).
Thrust: 6,549.00 kN (1,472,273 lbf).
First Launch: 2007.10.11.
Last Launch: 2009.04.04.
Number: 3 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • FS-1300 American communications satellite bus. Operational, first launch 1989.06.05. More...
  • HS 702 American communications satellite bus. Operational, first launched 1999.12.22. More...

See also
  • Atlas V The Atlas V launch vehicle system was a completely new design that succeeded the earlier Atlas series. Atlas V vehicles were based on the 3.8-m (12.5-ft) diameter Common Core Booster (CCB) powered by a single Russian RD-180 engine. These could be clustered together, and complemented by a Centaur upper stage, and up to five solid rocket boosters, to achieve a wide range of performance. More...

Associated Manufacturers and Agencies
  • Martin American manufacturer of rockets, spacecraft, and rocket engines. Martin Marietta Astronautics Group (1956), Denver, CO, 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 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...

Atlas V 421 Chronology


2007 October 11 - . 00:22 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. Launch Pad: SLC41. LV Family: Atlas V. Launch Vehicle: Atlas V 421. LV Configuration: Atlas V 421 AV-011.
  • USA 195 - . Payload: WGS SV-1. Nation: USA. Agency: Martin. Class: Communications. Type: Military communications satellite. Spacecraft: HS 702. USAF Sat Cat: 32258 . COSPAR: 2007-046A. Apogee: 39,016 km (24,243 mi). Perigee: 32,586 km (20,247 mi). Inclination: 0.2000 deg. Period: 1,436.80 min. Summary: First USAF Wideband Global Satcom satellite, designed to replace the DSCS series, was placed by the Atlas booster in an initial 477 km x 66,847 km x 20.1 deg geosynchronous transfer orbit. The satellite carried X-band and Ka-band communications payloads..

2008 April 14 - . 20:12 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. Launch Pad: SLC41. LV Family: Atlas V. Launch Vehicle: Atlas V 421. LV Configuration: Atlas V 421 AV-014.
  • ICO G1 - . Mass: 6,600 kg (14,500 lb). Nation: USA. Agency: Martin. Class: Communications. Type: Civilian communications satellite. Spacecraft: FS-1300. USAF Sat Cat: 32763 . COSPAR: 2008-016A. Apogee: 35,800 km (22,200 mi). Perigee: 35,774 km (22,228 mi). Inclination: 6.0000 deg. Period: 1,436.10 min. Summary: The satellite was to provide mobile communications services for ICO Global Communications, a successor company to Teledesic..

2009 April 4 - . 08:34 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC41. Launch Pad: SLC41. LV Family: Atlas V. Launch Vehicle: Atlas V 421.
  • USA 204 - . Payload: WGS F2. Nation: USA. Agency: Martin. Class: Communications. Type: Military communications satellite. Spacecraft: HS 702. USAF Sat Cat: 34713 . COSPAR: 2009-017A. Apogee: 35,452 km (22,028 mi). Perigee: 35,397 km (21,994 mi). Inclination: 0.1000 deg. Period: 1,417.60 min. Summary: Wideband Global Satcom; provided communications for the US Dept. of Defense Central Command (CENTCOM)..

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