Английская Википедия:Intelsat III F-3
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:Portal Шаблон:Intelsat Шаблон:Orbital launches in 1969
Шаблон:Use mdy dates Шаблон:Use American English
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite encyclopedia
- ↑ Шаблон:Cite web
- ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокlaunchlog
не указан текст - ↑ 5,0 5,1 Шаблон:Cite web
- ↑ Шаблон:Cite web
- ↑ Ошибка цитирования Неверный тег
<ref>
; для сносокn2yo
не указан текст