Encyclopedia Astronautica
Delta 3920/PAM


American orbital launch vehicle. Four stage vehicle consisting of 9 x Castor 4A + 1 x ELT Thor/RS-27 + 1 x Delta K + 1 x Star 48B

LEO Payload: 1,280 kg (2,820 lb). Payload: 1,280 kg (2,820 lb) to a GTO.

Status: Retired 1987.
Gross mass: 191,600 kg (422,400 lb).
Payload: 1,280 kg (2,820 lb).
Height: 36.00 m (118.00 ft).
Diameter: 2.44 m (8.00 ft).
Thrust: 3,188.00 kN (716,690 lbf).
Apogee: 40,000 km (24,000 mi).
First Launch: 1982.08.26.
Last Launch: 1987.03.20.
Number: 6 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • HS 376 American communications satellite. 56 launches, 1980.11.15 (SBS 1) to 2003.09.27 (E-Bird). Mass 654 kg at beginning-of-life in geosynchronous orbit. Spin stabilized at 50 rpm by 4 hydrazine thrusters with 136 kg propellant. 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 Programs
  • Anik Telecommunications satellite system, act as space repeaters capable of receiving transmissions from earth stations and retransmitting them to other earth stations in Canada. The antenna coverage of the satellite provides the capability of serving virtually all of Canada. Operating entity - Telesat Canada. More...
  • Palapa Indonesia's domestic communications satellite system. Palapas, stationed in geosynchronous orbit, provide voice circuits and television to the country's 6000+ inhabited islands. More...
  • Telstar Network of communications satellites, operated by AT&T Skynet, later Loral Skynet, Bedminster. 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...
  • 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
  • Castor 4 Solid propellant rocket stage. Loaded/empty mass 10,534/1,269 kg. Thrust 407.21 kN. Vacuum specific impulse 261 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...
  • Delta Thor RS27 Lox/Kerosene propellant rocket stage. Loaded/empty mass 84,368/4,360 kg. Thrust 1,030.22 kN. Vacuum specific impulse 296 seconds. 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 3920/PAM Chronology


1982 August 26 - . 23:10 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Delta. Launch Vehicle: Delta 3920/PAM. LV Configuration: Delta 3920/PAM 651/D164.
  • Anik D1 (Telesat 5) - . Payload: Anik D1. Nation: Canada. Agency: Telesat. Program: Anik. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 376. Completed Operations Date: 1991-12-16 . USAF Sat Cat: 13431 . COSPAR: 1982-082A. Apogee: 35,846 km (22,273 mi). Perigee: 35,820 km (22,250 mi). Inclination: 8.0000 deg. Period: 1,438.50 min. Telecommunications. Operating entity Telesat Canada. Longitude 104.5W. Anik D-1 Transmit frequencies (MHz): 3720, 3740, 3760, 3780, 3800, 3820, 3840, 3860, 3880, 3900, 3920, 3940, 3960, 3980, 4000, 4020, 4040, 4060, 4080, 4100, 4120, 4140, 4160, 4180. Power 8.9 watts on each frequency. Positioned in geosynchronous orbit at 104 deg W in 1982-1991 As of 2 September 2001 located at 94.37 deg E drifting at 0.637 deg W per day. As of 2007 Mar 10 located at 52.18E drifting at 0.631W degrees per day.

1983 June 28 - . 23:08 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Delta. Launch Vehicle: Delta 3920/PAM. LV Configuration: Delta 3920/PAM D170.
  • Galaxy 1 - . Payload: HS 376. Mass: 1,218 kg (2,685 lb). Nation: USA. Agency: HCI. Program: Galaxy. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 376. Completed Operations Date: 1994-03-10 . USAF Sat Cat: 14158 . COSPAR: 1983-065A. Apogee: 35,841 km (22,270 mi). Perigee: 35,815 km (22,254 mi). Inclination: 6.3000 deg. Period: 1,438.20 min. TV. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit at 134 deg W in 1983-1991; 133 deg W in 1991-1994 As of 31 August 2001 located at 92.66 deg W drifting at 0.600 deg W per day. As of 2007 Mar 9 located at 46.95W drifting at 0.505W degrees per day.

1983 July 28 - . 22:49 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Delta. Launch Vehicle: Delta 3920/PAM. LV Configuration: Delta 3920/PAM D171.
  • Telstar 3A - . Payload: Telstar 301 -> Arabsat 1E. Mass: 625 kg (1,377 lb). Nation: USA. Agency: ATT. Program: Telstar. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 376. Completed Operations Date: 1996-09-29 . USAF Sat Cat: 14234 . COSPAR: 1983-077A. Apogee: 36,108 km (22,436 mi). Perigee: 35,885 km (22,297 mi). Inclination: 6.5000 deg. Period: 1,446.80 min. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit at 96 deg W in 1983-1985; 105 deg W in 1985; 96 deg W in 1985-1994; 107 deg W in 1994; 20 deg E in 1995-1996 As of 5 September 2001 located at 143.88 deg W drifting at 2.714 deg W per day. As of 2007 Mar 11 located at 158.94W drifting at 2.690W degrees per day.

1983 September 22 - . 22:16 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Delta. Launch Vehicle: Delta 3920/PAM. LV Configuration: Delta 3920/PAM D173.
  • Galaxy 2 - . Payload: HS 376. Mass: 1,218 kg (2,685 lb). Nation: USA. Agency: HCI. Program: Galaxy. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 376. Completed Operations Date: 1994-05-21 . USAF Sat Cat: 14365 . COSPAR: 1983-098A. Apogee: 35,791 km (22,239 mi). Perigee: 35,785 km (22,235 mi). Inclination: 0.1000 deg. Period: 1,436.20 min. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit at 74 deg W in 1983-1994 As of 4 September 2001 located at 110.16 deg W drifting at 0.457 deg W per day. As of 2007 Mar 10 located at 57.56E drifting at 0.460W degrees per day.

1984 September 21 - . 22:18 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Delta. Launch Vehicle: Delta 3920/PAM. LV Configuration: Delta 3920/PAM D176.
  • Galaxy 3 - . Payload: HS 376. Mass: 1,218 kg (2,685 lb). Nation: USA. Agency: HCI. Program: Galaxy. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 376. Completed Operations Date: 1995-10-03 . USAF Sat Cat: 15308 . COSPAR: 1984-101A. Apogee: 35,931 km (22,326 mi). Perigee: 35,885 km (22,297 mi). Inclination: 5.7000 deg. Period: 1,442.30 min. Geostationary at 3.5 deg W. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Positioned in geosynchronous orbit at 94 deg W in 1984-1995 As of 1 September 2001 located at 138.23 deg E drifting at 1.543 deg W per day. As of 2007 Mar 10 located at 125.04W drifting at 1.587W degrees per day.

1987 March 20 - . 22:22 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Delta. Launch Vehicle: Delta 3920/PAM. LV Configuration: Delta 3920/PAM D182.
  • Palapa B2P - . Mass: 1,200 kg (2,600 lb). Nation: Indonesia. Agency: Perumtel. Program: Palapa. Class: Communications. Type: Civilian communications satellite. Spacecraft: HS 376. Completed Operations Date: 1998-01-18 . USAF Sat Cat: 17706 . COSPAR: 1987-029A. Apogee: 35,906 km (22,310 mi). Perigee: 35,868 km (22,287 mi). Inclination: 5.0000 deg. Period: 1,441.20 min. Stationed at 113 deg W. Positioned in geosynchronous orbit at 113 deg E in 1987-1996; 144 deg E in 1996-1998 As of 28 August 2001 located at 130.30 deg W drifting at 1.327 deg W per day. As of 2007 Mar 3 located at 141.38E drifting at 1.274W degrees per day.

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