Английская Википедия:Intelsat III F-3

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Шаблон:Infobox spaceflight Intelsat III F-3 was a geostationary communications satellite operated by Intelsat. Launched in 1969 it was intended for operations over the Pacific Ocean; however, it spent most of its service life over the Indian Ocean at a longitude of 63 degrees east.[1]

The third of eight Intelsat III satellites to be launched, Intelsat III F-3 was built by TRW. It was a Шаблон:Convert spacecraft, with its mass reducing to Шаблон:Convert by entry into service as it burned propellant to reach its final orbit. The satellite carried an SVM-2 apogee motor for propulsion and was equipped with two transponders powered by body-mounted solar cells generating 183 watts of power.[2] It was designed for 5 years of service life.[3]

The launch of Intelsat III F-3 made use of a Delta M rocket flying from Launch Complex 17A at the Cape Canaveral Air Force Station. The launch, which was conducted by NASA, took place at 00:39:00 UTC on February 6, 1969, with the spacecraft entering a geosynchronous transfer orbit.[4] Shortly after launch, Intelsat III F-3 fired its apogee motor to achieve geostationary orbit.

Intended to be operated over the Pacific Ocean at a longitude of 174° east, Intelsat III F-3 was moved to the less important Indian Ocean slot at 63° east after only three months in orbit due to concerns regarding its reliability.[5] The satellite was only regarded as partially operable; however, it remained in service until April 1979, before being decommissioned in December of that year.[6][5]

At the end of its service life, Intelsat III F-3 was raised into a higher orbit to reduce the probability of it colliding with an operational spacecraft. As of February 3, 2014 it remains in orbit, with a perigee of Шаблон:Convert, an apogee of Шаблон:Convert, inclination of 18.63 degrees and an orbital period of 28.25 hours.[7]

See also

References

Шаблон:Reflist

Шаблон:Portal Шаблон:Intelsat Шаблон:Orbital launches in 1969

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  1. Шаблон:Cite web
  2. Шаблон:Cite encyclopedia
  3. Шаблон:Cite web
  4. Ошибка цитирования Неверный тег <ref>; для сносок launchlog не указан текст
  5. 5,0 5,1 Шаблон:Cite web
  6. Шаблон:Cite web
  7. Ошибка цитирования Неверный тег <ref>; для сносок n2yo не указан текст