Encyclopedia Astronautica
NTS


American navigation technology satellite. 2 launches, 1974.07.14 (NTS 1) and 1977.06.23 (NTS 2). Demonstrated navigation technologies.

Gross mass: 362 kg (798 lb).
First Launch: 1974.07.14.
Last Launch: 1977.06.23.
Number: 2 .

More... - Chronology...


Associated Countries
See also
  • Atlas The Atlas rocket, originally developed as America's first ICBM, was the basis for most early American space exploration and was that country's most successful medium-lift commercial launch vehicle. It launched America's first astronaut into orbit; the first generations of spy satellites; the first lunar orbiters and landers; the first probes to Venus, Mars, Mercury, Jupiter, and Saturn; and was America's most successful commercial launcher of communications satellites. Its innovative stage-and-a-half and 'balloon tank' design provided the best dry-mass fraction of any launch vehicle ever built. It was retired in 2004 after 576 launches in a 47-year career. More...

Associated Launch Vehicles
  • Atlas The Atlas rocket, originally developed as America's first ICBM, was the basis for most early American space exploration and was that country's most successful medium-lift commercial launch vehicle. It launched America's first astronaut into orbit; the first generations of spy satellites; the first lunar orbiters and landers; the first probes to Venus, Mars, Mercury, Jupiter, and Saturn; and was America's most successful commercial launcher of communications satellites. Its innovative stage-and-a-half and 'balloon tank' design provided the best dry-mass fraction of any launch vehicle ever built. It was retired in 2004 after 576 launches in a 47-year career. More...
  • Atlas F American intercontinental ballistic missile. Final operational version of Atlas ICBM. Differed in guidance systems. Deployed as missiles from 1961 to 1966. After retirement, the ICBM's were refurbished and used for over thirty years as space launch vehicles. More...

Associated Manufacturers and Agencies
  • USN American agency overseeing development of rockets, spacecraft, and rocket engines. USN Joint Task Force 7, USA. More...

Associated Programs
  • Navstar The Navstar GPS (Global Positioning System) program was a joint service effort directed by the United States Department of Defence. Navstar GPS is a space-based radio-positioning system nominally consisting of a 24-satellite constellation that provides navigation and timing information to military and civilian users worldwide. In addition to the satellites, the system consists of a worldwide satellite control network and GPS receiver units that acquire the satellite's signals and translate them into position information. Originally envisioned as primarily a military system, GPS was found to have a wide variety of civilian applications, many of them never conceived by the original system's designers. More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.
  • JPL Mission and Spacecraft Library, Jet Propulsion Laboratory, 1997. Web Address when accessed: here.
  • Lockheed Martin Coporation, Atlas Family Fact Sheets, September 1998.. Web Address when accessed: here.
  • McDowell, Jonathan, Launch Log, October 1998. Web Address when accessed: here.

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 SLC3W Delta, Atlas launch complex. First designated LC1-1 and used to launch Atlas Agena B with Samos payloads. After Samos cancellation, rebuilt in 1963 to support launch of KH-4 Corona spysats atop Thor-Agena. Refurbished in 1973 to accomodate surplus Atlas ICBM's in space launch role. More...

NTS Chronology


1974 July 14 - . 05:17 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC3W. LV Family: Atlas. Launch Vehicle: Atlas F/PTS. LV Configuration: Atlas F/PTS 69F.
  • NTS 1 - . Payload: Timation 3 / OPS 7518. Mass: 293 kg (645 lb). Nation: USA. Agency: USAF. Program: Navstar. Class: Technology. Type: Navigation technology satellite. Spacecraft: NTS. USAF Sat Cat: 7369 . COSPAR: 1974-054A. Apogee: 13,774 km (8,558 mi). Perigee: 13,446 km (8,354 mi). Inclination: 125.2000 deg. Period: 468.70 min. Summary: Demonstrated navigation technologies leading eventually to Navstar/GPS system. Operated for 5 years..

1977 June 23 - . 09:16 GMT - . Launch Site: Vandenberg. Launch Complex: Vandenberg SLC3W. LV Family: Atlas. Launch Vehicle: Atlas F. LV Configuration: Atlas F 65F / SGS-1.
  • NTS 2 - . Mass: 431 kg (950 lb). Nation: USA. Agency: USAF; USN. Program: Navstar. Class: Technology. Type: Navigation technology satellite. Spacecraft: NTS. USAF Sat Cat: 10091 . COSPAR: 1977-053A. Apogee: 20,256 km (12,586 mi). Perigee: 20,115 km (12,498 mi). Inclination: 63.9000 deg. Period: 718.10 min. Summary: Navigation Technical Satellite; GPS precursor. Operated 50% satisfactorily -- still operating 25 years later..

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