INSAT 4CR

Launch data: Designation  32050 / 07037A Launch date  02 Sep 2007 - 12:50 UT Launch site  Sriharikota, SLP Launch vehicle  GSLV Mk.1 (F04) Mission  Government: Communications Geostationary orbit on Feb 1, 2011: Perigee / Apogee  35777 x 35795 km Eccentricity  2.13E-04 Inclination  0.01° Period  1436.08 min

Spacecraft data: Prime contractor  Indian Space Research Organization (ISRO) Operator  Indian Space Research Organization (ISRO) Platform   Mass at launch  2130 kg Dry Mass  941 kg Basic shape   Dimension (m)   Solar array   Stabilization   Communication Payload  12 Ku-band transponders employing 140 W Traveling Wave Tube Amplifiers (TWTA) Ku-band Beacon DC power  3000 W Design lifetime  12 yrs - still active

Description:

• INSAT-4CR spacecraft is configured with exclusive Ku band employing the I-2K Bus. It was injected into the orbit by GSLV-F04 rocket with enhanced Russian Cryogenic engine and co-located at 74° East longitude along with INSAT-3C ⁄ Kalpana-1 ⁄ GSAT-3 (EDUSAT).
• INSAT-4CR carries 12 high-power Ku-band transponders designed to provide Direct-to-home (DTH) television services, Video Picture Transmission (VPT) and Digital Satellite News Gathering (DSNG).

Mission details:

• Replacement for Insat-4C
• The Insat 4CR Ku-band television satellite was launched on Sep 2 by India's GSLV rocket. GSLV-F04 took off from the second launch pad at Satish Dhawan Space Centre and put the Insat in a 196 x 31878 km x 15.8 deg transfer orbit. The apogee is a little lower than the standard 35800 km GTO apogee, but the Insat on-board apogee engine was able to make up the difference and in Sep 3 it was in a 2981 x 35712 km x 11.0 deg intermediate orbit.
• By Sep 6 Insat 4CR was in a 32579 x 35226 km x 0.3 deg orbit approaching geostationary altitude. The satellite replaces Insat 4C, lost in the destruction of GSLV-F02 in 2006. (GSLV-F03 has not yet been launched.)