View source for INSAT-4C

{{Infobox spaceflight
| name                  = INSAT-4C
| image                 =  
| image_caption         =

| mission_type          = [[Communications satellite|Communications]]
| operator              = [[INSAT]]
| mission_duration      = 10&nbsp;years planned<br/>Failed to orbit

| spacecraft_bus        = [[I-2K]]
| manufacturer          = [[Indian Space Research Organisation|ISRO]]
| launch_mass           = {{convert|2168|kg|lb}}
| dry_mass              = {{convert|950|kg|lb}}
| power                 =

| launch_date           = {{start-date|10 July 2006, 12:08|timezone=yes}}&nbsp;UTC<ref name="launchlog">{{cite web|url=http://planet4589.org/space/log/launchlog.txt|title=Launch Log|first=Jonathan|last=McDowell|work=Jonathan's Space Page|access-date=12 November 2013}}</ref>
| launch_rocket         = [[Geosynchronous Satellite Launch Vehicle|GSLV Mk.I]]
| launch_site           = [[Satish Dhawan Space Centre|Satish Dhawan]] [[Satish Dhawan Space Centre Second Launch Pad|SLP]]
| launch_contractor     = [[Indian Space Research Organisation|ISRO]]
| entered_service       = 
}}
'''INSAT-4C''' was an Indian [[communications satellite]] which was lost in a launch failure in 2006. Had it reached orbit, it would have formed part of the [[Indian National Satellite System]]. Launched in 2007, it was intended to have operated in [[geostationary orbit]] at a longitude of 73.97°&nbsp;east. The [[INSAT-4CR]] satellite, launched in September 2007, replaced it.<ref name="UCS">{{cite web|url=http://www.ucsusa.org/assets/documents/nwgs/UCS_Satellite_Database_9-1-13.txt|title=UCS Satellite Database|publisher=Union of Concerned Scientists|date=1 September 2013|access-date=12 November 2013|archive-date=4 January 2014|archive-url=https://web.archive.org/web/20140104234546/http://www.ucsusa.org/assets/documents/nwgs/UCS_Satellite_Database_9-1-13.txt|url-status=dead}}</ref>

Built by the [[Indian Space Research Organisation]], INSAT-4C was based upon the [[I-2K]] [[satellite bus]]. It had a dry mass of {{convert|950|kg}}, or {{convert|2168|kg}} when fully fuelled. It was expected to have operated for ten years. The satellite carried twelve [[Ku band]] transponders, with two [[solar array]]s to generate power.<ref name="gsp">{{cite web|url=http://space.skyrocket.de/doc_sdat/insat-4a.htm|title=Insat 4A, 4B|first=Gunter|last=Krebs|work=Gunter's Space Page|access-date=12 November 2013}}</ref>

ISRO launched INSAT-4C on the second operational flight of the [[Geosynchronous Satellite Launch Vehicle]], which was flying in the Mk.I configuration. The launch took place from the [[Satish Dhawan Space Centre Second Launch Pad|Second Launch Pad]] at the [[Satish Dhawan Space Centre]]; the first time the pad was used by a GSLV.<ref>{{cite web|url=http://www.nasaspaceflight.com/2006/07/indias-insat-4c-launch-vehicle-explodes/|title=India's Insat 4C launch – vehicle explodes|first=Chris|last=Bergin|publisher=NASASpaceflight.com|date=10 July 2006|access-date=12 November 2013}}</ref> Liftoff occurred at 12:08 UTC on 10 July 2006.<ref name="launchlog"/> Early in the flight a [[thrust controller]] in one of the four liquid rocket boosters failed,<ref name="slr">{{cite web|url=http://www.spacelaunchreport.com/gslv.html|title=GSLV|first=Ed|last=Kyle|work=Space Launch Report|access-date=12 November 2013}}</ref> resulting in the booster cutting off shortly afterwards.<ref>{{cite web|url=http://spaceflightnow.com/news/n0607/10gslvfailure/|title=Indian rocket launch ends in failure soon after liftoff|first=Stephen|last=Clark|publisher=Spaceflight Now|date=10 July 2006|access-date=12 November 2013}}</ref> Approximately 55 seconds after launch<ref>{{cite web|url=http://www.spaceflightnow.com/news/n0709/02insat4cr/|title=India's large satellite launcher returns to flight|first=Stephen|last=Clark|publisher=Spaceflight Now|date=2 September 2007|access-date=12 November 2013}}</ref> the vehicle veered off-course and began to disintegrate.<ref>{{cite web|url=http://news.bbc.co.uk/1/hi/world/south_asia/5165470.stm|title=Key Indian satellite launch fails|publisher=BBC News|date=10 July 2006|access-date=12 November 2013}}</ref> The [[range safety officer]] subsequently commanded the remainder of the rocket to self-destruct.

==References==
{{Portal|Spaceflight}}
{{reflist}}

{{INSAT Satellites}}
{{Indian spacecraft}}
{{Orbital launches in 2006}}

[[Category:Spacecraft launched in 2006]]
[[Category:INSAT satellites]]
[[Category:Satellite launch failures]]
[[Category:2006 in India]]
[[Category:Spacecraft launched by GSLV rockets]]