Intelsat III F-5
{{short description|Failed communications satellite}}
{{Use American English|date=April 2017}}
{{Infobox spaceflight
| name = Intelsat III F-5
| image =
| image_caption =
| mission_type = Communications
| operator = Intelsat
| website =
| COSPAR_ID = 1969-064A
| SATCAT = 04051
| mission_duration = 5 years planned
Failed to orbit
| spacecraft_bus =
| spacecraft_type =
| manufacturer = TRW
| BOL_mass = {{convert|151|kg|lb}}
| launch_mass = {{convert|293|kg|lb}}
| dimensions =
| power = 183 W
| launch_date = {{start-date|July 26, 1969, 02:06|timezone=yes}} UTC{{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|first=Jonathan|last=McDowell|work=Jonathan's Space Page|access-date=April 21, 2017}}
| launch_rocket = Delta M
| launch_site = Cape Canaveral LC-17A
| launch_contractor =
| disposal_type =
| deactivated = {{end-date|October 14, 1988}}
| orbit_epoch = July 26, 1969
| orbit_reference = Geocentric
| orbit_regime = Low Earth
| orbit_periapsis = {{convert|252|km|mi|sp=us}}
| orbit_apoapsis = {{convert|1,301|km|mi|sp=us}}
| orbit_inclination = 30.3°
| orbit_eccentricity = 0.07326
| orbit_period = 115.3 minutes
| orbit_longitude =
| apsis = gee
| trans_band =
| trans_frequency =
| trans_bandwidth =
| trans_capacity =
| trans_coverage =
| trans_TWTA =
| trans_EIRP =
| trans_HPBW =
| programme = Intelsat III
| previous_mission = Intelsat III F-4
| next_mission = Intelsat III F-6
}}
Intelsat III F-5 was a communications satellite intended to be operated by Intelsat. Launched towards geostationary orbit in 1969 it failed to achieve orbit.
Design
The fifth of eight Intelsat III satellites to be launched, Intelsat III F-5 was built by TRW. It was a {{convert|293|kg|lb|adj=on}} spacecraft equipped with two transponders to be powered by body-mounted solar cells generating 183 watts of power.{{cite encyclopedia|url=http://www.astronautix.com/craft/intlsat3.htm|archive-url=https://web.archive.org/web/20020223094128/http://www.astronautix.com/craft/intlsat3.htm|url-status=dead|archive-date=February 23, 2002|title=Intelsat 3|first=Mark|last=Wade|encyclopedia=Encyclopedia Astronautica|access-date=April 21, 2017}} It had a design life of five years and carried an SVM-2 apogee motor for propulsion.{{cite web|url=http://space.skyrocket.de/doc_sdat/intelsat-3.htm|title=Intelsat-3|first=Gunter|last=Krebs|work=Gunter's Space Page|access-date=April 21, 2017}}
Launch
Intelsat III F-5 was launched by a Delta M rocket, flying from Launch Complex 17A at the Cape Canaveral Air Force Station. The launch took place on July 26, 1969, with the spacecraft bound for a geosynchronous transfer orbit.
Due to a failure in the third phase of the launch process, the satellite did not reach the desired orbit.
{{Clear}}