Encyclopedia Astronautica
Delta N6


American orbital launch vehicle. Three stage vehicle consisting of 6 x Castor 2 + 1 x LT Thor DSV-2L-1C + 1 x Delta E

Gross mass: 102,900 kg (226,800 lb).
Height: 33.00 m (108.00 ft).
Diameter: 2.44 m (8.00 ft).
Thrust: 2,411.00 kN (542,014 lbf).
Apogee: 1,500 km (900 mi).
First Launch: 1970.01.23.
Last Launch: 1971.10.21.
Number: 3 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • Oscar International series of amateur radio communications satellites. Operational, first launch 1961.12.12. Launched in a variety of configurations and by many nations. More...
  • ITOS American earth weather satellite. 8 launches, 1970.01.23 (ITOS 1) to 1976.07.29 (NOAA 5). ITOS was the follow-on to the TIROS series of polar-orbiting US weather satellites, and marked the beginning of the use of the NOAA designator. More...
  • CEPE American satellite. One launch, 1970.12.11. Cylindrical Electrostatic Probe Experiment (orbital experiment attached to Delta second stage) 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
  • Oscar Amateur radio satellite network. For over a third of a century a series of OSCAR satellites have been launched in a variety of configurations and by many nations. More...
  • Tiros TIROS spacecraft were the beginning of a long series of polar-orbiting meteorological satellites. TIROS was followed by the TOS (TIROS Operational System) series, and then the ITOS (Improved TIROS) series, and later the NOAA series. TIROS spacecraft were developed by GSFC and managed by ESSA (Environmental Science Services Administration). The objective was to establish a global weather satellite system. 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 SLC2E Delta launch complex. Originally a Thor 75 SMS launch pad. Upgraded to a space launch complex in 1966. More...
  • Vandenberg SLC2W Delta launch complex. Originally a Thor 75 SMS launch pad. Upgraded to a space launch complex in 1966. More...

Associated Stages
  • Castor 2 Solid propellant rocket stage. Loaded/empty mass 4,424/695 kg. Thrust 258.92 kN. Vacuum specific impulse 262 seconds. More...
  • Delta Thor LT Lox/Kerosene propellant rocket stage. Loaded/empty mass 70,354/3,715 kg. Thrust 866.71 kN. Vacuum specific impulse 290 seconds. More...
  • Delta E Nitric acid/UDMH propellant rocket stage. Loaded/empty mass 6,009/785 kg. Thrust 35.10 kN. Vacuum specific impulse 278 seconds. More...

Delta N6 Chronology


1970 January 23 - . 11:31 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta N6. LV Configuration: Thor Delta N6 542/D76.
  • ITOS 1 - . Payload: Tiros M. Mass: 309 kg (681 lb). Nation: USA. Agency: NOAA. Program: Tiros. Class: Earth. Type: Weather satellite. Spacecraft: ITOS. USAF Sat Cat: 4320 . COSPAR: 1970-008A. Apogee: 1,479 km (919 mi). Perigee: 1,434 km (891 mi). Inclination: 101.8000 deg. Period: 115.00 min. Summary: Improved TIROS Operational Satellite. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C)..
  • Oscar 5 - . Payload: Australis-Oscar 5. Mass: 18 kg (39 lb). Nation: Australia. Agency: Clemson. Program: Oscar. Class: Communications. Type: Amateur radio communications satellite. Spacecraft: Oscar. USAF Sat Cat: 4321 . COSPAR: 1970-008B. Apogee: 1,478 km (918 mi). Perigee: 1,434 km (891 mi). Inclination: 101.8000 deg. Period: 115.00 min. Australis-OSCAR 5 was launched piggyback with ITOS-1 (TIROS-M weather satellite. Weight 17.7 kg (9 kg of which was battery mass). Box shaped 304 x 431 x 152 mm. 2 meter monopole and 10 meter dipole antennas. It was the first amateur satellite to be remotely controlled. Built by students at The University of Melbourne, Melbourne, Victoria, Australia. Battery powered, Australis-OSCAR 5 transmitted telemetry on both 2 meter (144.050 MHz at 50 mW) and 10 meter (29.450 MHz at 250 mW) bands that operated for 23 and 46 days respectively. Passive magnetic attitude stabilization was performed by carrying two bar magnets to align with the Earth's magnetic field in order to provide a favorable antenna footprint. The University of Melbourne compiled tracking reports from hundreds of stations in 27 countries.

1970 December 11 - . 11:35 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2W. LV Family: Delta. Launch Vehicle: Delta N6. LV Configuration: Thor Delta N6 546/D81.
  • NOAA 1 - . Payload: ITOS A. Mass: 306 kg (674 lb). Nation: USA. Agency: NOAA. Program: Tiros. Class: Earth. Type: Weather satellite. Spacecraft: ITOS. USAF Sat Cat: 4793 . COSPAR: 1970-106A. Apogee: 1,473 km (915 mi). Perigee: 1,423 km (884 mi). Inclination: 101.7000 deg. Period: 114.80 min. Summary: Built for NASA; operated by NOAA. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C)..
  • CEPE - . Nation: USA. Agency: NASA Greenbelt. Program: Tiros. Spacecraft: CEPE. USAF Sat Cat: 4794 . COSPAR: 1970-106B. Apogee: 1,484 km (922 mi). Perigee: 1,426 km (886 mi). Inclination: 101.7042 deg. Period: 114.92 min.

1971 October 21 - . 11:32 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC2E. LV Family: Delta. Launch Vehicle: Delta N6. LV Configuration: Thor Delta N6 572/D86. FAILURE: Failure.. Failed Stage: 2.
  • ITOS B - . Payload: ITOS B. Mass: 308 kg (679 lb). Nation: USA. Agency: NASA Greenbelt. Program: Tiros. Class: Earth. Type: Weather satellite. Spacecraft: ITOS. Decay Date: 1972-07-21 . USAF Sat Cat: 5565 . COSPAR: 1971-091A. Apogee: 1,483 km (921 mi). Perigee: 293 km (182 mi). Inclination: 102.5000 deg. Period: 102.70 min. Summary: Unusable orbit..

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