Countdown begins for GSAT launch SaturdayDecember 24th, 2010 - 2:51 pm ICT by IANS
Chennai, Dec 24 (IANS) The 30-hour countdown for the launch of advanced communication satellite GSAT-5P started 10.04 Friday morning at the Sriharikota rocket launch centre, about 80 km from Chennai, an official of the Indian Space Research Organisation (ISRO) said.The Rs.125 crore (Rs.1.25 billion) GSAT-5P satellite weighing 2,130 kg will serve the needs of the telecommunication, televison and weather sectors. It will eventually retire the INSAT-2E satellite that was sent up in 1999.
If all goes well, the satellite will be blasted off Saturday afternoon.
The GSAT-5P satellite with a life span of over 13 years has 36 transponders - automatic receivers and transmitters for communication and broadcast of signals. Successful launch of GSAT-5P will take the agency’s transponder capacity to about 235 from the 200 currently in the orbit.
“The geosynchronous satellite launch vehicle (GSLV) carrying GSAT-5P will blast off from the second launch pad at Satish Dhawan Space Centre Saturday evening at 4.04 p.m.,” S.Satish, an ISRO director, told IANS.
The GSLV rocket is 51 metres tall, weighs 418 tonnes and costs around Rs.175 crore (Rs.1.75 billion).
ISRO officials told IANS that the filling of liquid and cryogenic fuel will be carried out during the countdown till 30 minutes before the actual lift-off.
The GSLV rocket has three stages. The first stage is fired by solid fuel. The four strap-on motors give additional thrust during the lift-off and the initial phase of the rocket’s flight.
The second stage is fired by liquid fuel. The third stage, more complex than the others, involves the cryogenic engine powered by liquid hydrogen as fuel and liquid oxygen as oxidiser.
The launch was originally scheduled last Monday, but was aborted Sunday a leak was detected in one of the valves of the Russian-made cryogenic engine. Later, tests ensured the stability of the valve and the ISRO gave the go-ahead for Saturday launch.
The ISRO currently has the following communication satellites in service - INSAT 2E, INSAT 3A, INSAT 3B, INSAT 3C, INSAT 3E, INSAT 4A, INSAT 4CR and INSAT 4B working at 50 percent capability, Satish said.
ISRO launched two major satellites in 2010 - communication satellite GSAT-4 and remote sensing satellite Cartosat-2. GSAT-4 launch failed after the rocket crashed into the Bay of Bengal while Cartosat-2 was placed successfully in the orbit.
- Countdown for GSAT satellite launch begins - Dec 25, 2010
- GSAT satellite all set for launch (Lead, Changing dateline) - Dec 25, 2010
- Countdown for India's advanced satellite launch begins Sunday - Dec 18, 2010
- India to launch advanced communication satellite Dec 20 - Dec 13, 2010
- Indian rocket explodes seconds after launch (Intro Night Lead) - Dec 25, 2010
- Indian rocket explodes minute after launch (Night Lead) - Dec 25, 2010
- Indian rocket mission fails, second this year (Second Intro Night Lead) - Dec 25, 2010
- Indian rocket explodes minute after launch (Fourth Lead) - Dec 25, 2010
- India to launch advanced communications satellite Dec 25 (Lead) - Dec 22, 2010
- Indian, Russian scientists to decide Tuesday on rocket launch (Lead) - Dec 20, 2010
- Weak Russian component downed Indian rocket: Ex-ISRO chief - Apr 22, 2011
- Indian rocket explodes minute after launch (Third Lead) - Dec 25, 2010
- ISRO to decide on delayed rocket launch Wednesday - Dec 21, 2010
- Indian rocket set for launch Friday - Jul 14, 2011
- Indian rocket set for blast-off - Jul 15, 2011
Tags: , , , , , , , , , , , , , , , , , , ,