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India To Launch Multiple Foreign Satellites Launche
India will launch a dozen foreign satellites in the next couple of years, according to the chief of the country's space agency.
"We have [firm orders] today for about 12 satellites, which are scheduled to be launched in the coming two years," Indian Space Research Organization (ISRO) Chairman K. Radhakrishnan says. The satellites are mainly Canadian, German and Indonesian, including an 800-kg (1,760-lb.) spacecraft environment-monitoring satellite from DLF Germany.
ISRO has so far lofted 26 foreign satellites via its Polar Satellite Launch Vehicle (PSLV). The chairman also says ISRO will place another advanced communication satellite - GSAT-12 - into geosynchronous orbit in the second week of July.
The 1,400-kg GSAT-12 will be launched from the spaceport at Sriharikota, about 80 km (50 mi.) north-east of the southern city of Chennai, onboard PSLV-C17 at a cost of about 1 billion rupees ($22 million). Built at the space agency's satellite center in Bengaluru, the two-stage rocket will feature strap-on boosters for additional performance.
The 1.5 billion-rupee GSAT-12 will have 12 extended C-band transponders for communications and weather forecast services.
"The solid and liquid stages are going through final checks before strapping them onto the rocket," Radhakrishnan says. "The entire exercise, including assembling, integration and tests will be completed by June 26 for launching the mission in the second week of July."
GSAT-12 will be shipped to Sriharikota in Andhra Pradesh on June 2.
"As we are using a polar launch vehicle to place the satellite in the geosynchronous orbit, the spacecraft will be first placed in the lower elliptical orbit between 284 km perigee and 21,000 km apogee and subsequently transferred into the intended orbit in stages between 21,000 km perigee and 36,000 km apogee," Radhakrishnan says.
On May 25, ISRO's GSAT-8 was placed into geosynchronous orbit following launch from Kourou, French Guiana, onboard a European Ariane 5 rocket. ISRO has begun the process of switching on GSAT-8's payloads and expects the satellite to be available to users by the end of this month, Radhakrishnan says.
Defence News - India To Launch Multiple Foreign Satellites Launche
India will launch a dozen foreign satellites in the next couple of years, according to the chief of the country's space agency.
"We have [firm orders] today for about 12 satellites, which are scheduled to be launched in the coming two years," Indian Space Research Organization (ISRO) Chairman K. Radhakrishnan says. The satellites are mainly Canadian, German and Indonesian, including an 800-kg (1,760-lb.) spacecraft environment-monitoring satellite from DLF Germany.
ISRO has so far lofted 26 foreign satellites via its Polar Satellite Launch Vehicle (PSLV). The chairman also says ISRO will place another advanced communication satellite - GSAT-12 - into geosynchronous orbit in the second week of July.
The 1,400-kg GSAT-12 will be launched from the spaceport at Sriharikota, about 80 km (50 mi.) north-east of the southern city of Chennai, onboard PSLV-C17 at a cost of about 1 billion rupees ($22 million). Built at the space agency's satellite center in Bengaluru, the two-stage rocket will feature strap-on boosters for additional performance.
The 1.5 billion-rupee GSAT-12 will have 12 extended C-band transponders for communications and weather forecast services.
"The solid and liquid stages are going through final checks before strapping them onto the rocket," Radhakrishnan says. "The entire exercise, including assembling, integration and tests will be completed by June 26 for launching the mission in the second week of July."
GSAT-12 will be shipped to Sriharikota in Andhra Pradesh on June 2.
"As we are using a polar launch vehicle to place the satellite in the geosynchronous orbit, the spacecraft will be first placed in the lower elliptical orbit between 284 km perigee and 21,000 km apogee and subsequently transferred into the intended orbit in stages between 21,000 km perigee and 36,000 km apogee," Radhakrishnan says.
On May 25, ISRO's GSAT-8 was placed into geosynchronous orbit following launch from Kourou, French Guiana, onboard a European Ariane 5 rocket. ISRO has begun the process of switching on GSAT-8's payloads and expects the satellite to be available to users by the end of this month, Radhakrishnan says.
Defence News - India To Launch Multiple Foreign Satellites Launche
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hi member slenke - thanks for the reply , honestly im still a bit confused but i acknowledge this might be a specialist topic , nevertheless im quite interested in it .
you quoted PSLV has limit of 2.5 tons GTO - not sure what is GTO but mr pintu's post just after your's states in the 2nd para that the ( India's ??) PSLV - C17 itself weighs 320 tons and we are therefore to understand that a 320 tonne rocket cant lift a 3.1 ton payload satellite ? ...sorry not questioning your kind reply but merely trying to comprehend
i hope tonne and ton are the same otherwise my confusion may lie in that too ! tia to anyone who can figure it out !
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GTO stands for Geostationary Transfer Orbit. The orbit is highly eliptical with its low end (perigee) at ca 250-300 km in altitude and its high point (apogee) at ca 36000 km altitude. It's an orbit used for getting a payload out to the circlular Geostationary orbit at ca 36000 km altitude. At that altitude the payload takes almost exactly 24 hours to orbit the Earth making it possible for a satellite to appear stationary over a specific point along the equator. It's mostly used for communication satellites like the ones used for satellite TV and is why you don't have to move your satellite-dish around when watching TV.
Now, as you can imagine it takes a lot more fuel to send a satellite out to 36000 km than to 300 km. The PSLV is optimized for launches to polar orbit (hence its name - Polar Satellite Lauch Vehicle) and to sun-syncronous orbit at ca 700 km in altitude. To LEO (Low Earth Orbit), a fairly low orbit between 300- to 900 km altitude it can haul 3,250 metric tons (or 3250 kg). To sun-syncronous it can put a payload wheighing up to 1600 kg and to GTO 1060 kg. The difference between the amount of payload it can put in LEO and GTO is basically made up of the extra needed fuel to lift it to a higher orbit. You simply put need to obtain a higher speed since in space it's all about delta V (change in velocity).
Why a rocket needs to wheigh 320 tons is that its mostly made up of fuel and to lift an amount o fuel you need even more fuel. It's pretty much an exponential increase in fuel needed. If for example we need to put a satellite weighing 1 kg in orbit we need x amount of fuel. Now say that we want to launch a satellite wheighing 2 kg instead we would need more fuel, naturally. But since the added fuel adds to the total wheight we need to add even more fuel to compensate for the wheight of the added fuel. So you basically get an exponential mathematical equation (i.e ^2).
This graph (from wiki: Spacecraft propulsion - Wikipedia, the free encyclopedia) shows the exponential connection.
BTW, what I quoted was the GSLV (Geostationary Satellite Launch Vehicle).
It's not easy and it certainly can appear quite messy but it actually quite simple. I hope this helpes in your quest to understand all this and I'm happy to answer your questions.
Chota
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GSLV-III First flight further delayed
ISRO to begin flight testing of GSLV MkIII in next two years
ISRO to begin flight testing of GSLV MkIII in next two years
as per ISRO Chairman K Radhakrishnan
GSLV to launch GSAT–14 during mid-2012
The Indian Space Research Organisation, which has planned to put three satellites into the orbit with its Polar Satellite Launch Vehicle before end of this year, will send its GSAT -14 with its indigenously developed Geosynchronous Satellite Launch Vehicle D-5 during mid-2012, Chairman, ISRO, K. Radhakrishnan has informed.
Speaking to reporters after inaugurating the two-day national conference on 'Expanding frontiers in propulsion technology' at Liquid Propulsion Systems Centre (LPSC) in Mahendragiri in the district on Friday, Dr. Radhakrishnan said the ISRO, which had learnt a lot of highly valuable lessons from the unsuccessful flight of GSLV D-3 in April 2010, was working hard on the rectifying the problems to make the GSLV D-5 flight a resounding victory. GSAT–14 satellite would have C-band communication transponders.
GSLV to launch GSAT–14 during mid-2012 | idrw.org
The Indian Space Research Organisation, which has planned to put three satellites into the orbit with its Polar Satellite Launch Vehicle before end of this year, will send its GSAT -14 with its indigenously developed Geosynchronous Satellite Launch Vehicle D-5 during mid-2012, Chairman, ISRO, K. Radhakrishnan has informed.
Speaking to reporters after inaugurating the two-day national conference on 'Expanding frontiers in propulsion technology' at Liquid Propulsion Systems Centre (LPSC) in Mahendragiri in the district on Friday, Dr. Radhakrishnan said the ISRO, which had learnt a lot of highly valuable lessons from the unsuccessful flight of GSLV D-3 in April 2010, was working hard on the rectifying the problems to make the GSLV D-5 flight a resounding victory. GSAT–14 satellite would have C-band communication transponders.
GSLV to launch GSAT–14 during mid-2012 | idrw.org
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ISRO to test indigenous cryogenic stage onboard GSLV-D5
PTI Jun 18, 2011, 04.19pm IST
TIRUNELVELI: India will undertake the flight test of its indigenous cryogenic stage onboard homegrown rocket GSLV-D5 which will launch GSAT-14 by the middle of 2012, a top ISRO official has said.
A facility for static testing of the cryogenic engine would be ready in another two months at ISRO's Liquid Propulsions Systems centre (LPSC) at Mahendragiri in this district, Indian Space Research Organisation Chairman K Radhakrishnan said.
The new thrust chamber facility for static testing would be a big boon for the LPSC, Radhakrishnan told reporters at the LPSC yesterday after inagurating a two-day National Conference on "Expanding Frontiers in Propulsion Technology.
The maiden flight test of the indigenous cryogenic stage by ISRO onboard Geosynchronous Satellite Launch Vehicle GSLV-D3 ended in a failure in May, 2010 after the stage developed some snag and the rocket plunged into sea minutes after liftoff.
Radhakrishnan said India's advanced communication satellite GSAT-8, launched from Kourou in French Guiana on May 21, would become operational by this month end.
He also said ISRO would launch another communication satellite GSAT-12, equipped with 12 c-band transponders, onboard Polar Satellite Launch Vehicle PSVL-C17 on July 2.
PSLV- C18 would be launched in September from Sriharikota carrying Mega Tropiques satellite, an Indo-French joint venture.
On December 11, microwave remote sensing satellite Risat 1 would be launched. It would be able to take clear pictures of sky even if they were covered by clouds.
ISRO to test indigenous cryogenic stage onboard GSLV-D5 - Economic Times
PTI Jun 18, 2011, 04.19pm IST
TIRUNELVELI: India will undertake the flight test of its indigenous cryogenic stage onboard homegrown rocket GSLV-D5 which will launch GSAT-14 by the middle of 2012, a top ISRO official has said.
A facility for static testing of the cryogenic engine would be ready in another two months at ISRO's Liquid Propulsions Systems centre (LPSC) at Mahendragiri in this district, Indian Space Research Organisation Chairman K Radhakrishnan said.
The new thrust chamber facility for static testing would be a big boon for the LPSC, Radhakrishnan told reporters at the LPSC yesterday after inagurating a two-day National Conference on "Expanding Frontiers in Propulsion Technology.
The maiden flight test of the indigenous cryogenic stage by ISRO onboard Geosynchronous Satellite Launch Vehicle GSLV-D3 ended in a failure in May, 2010 after the stage developed some snag and the rocket plunged into sea minutes after liftoff.
Radhakrishnan said India's advanced communication satellite GSAT-8, launched from Kourou in French Guiana on May 21, would become operational by this month end.
He also said ISRO would launch another communication satellite GSAT-12, equipped with 12 c-band transponders, onboard Polar Satellite Launch Vehicle PSVL-C17 on July 2.
PSLV- C18 would be launched in September from Sriharikota carrying Mega Tropiques satellite, an Indo-French joint venture.
On December 11, microwave remote sensing satellite Risat 1 would be launched. It would be able to take clear pictures of sky even if they were covered by clouds.
ISRO to test indigenous cryogenic stage onboard GSLV-D5 - Economic Times
JAISWAL
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PSLV-C17 to Launch GSAT-12 on July 15
ISRO press release:
June 30, 2011
PSLV-C17 to Launch GSAT-12 on July 15, 2011
Preparations for the forthcoming launch of Polar Satellite Launch Vehicle (PSLV-C17) carrying India's communication satellite GSAT-12 are progressing well at Satish Dhawan Space Centre, Sriharikota. The launch of PSLV-C17/GSAT-12 mission is targeted for July 15, 2011.
GSAT-12 Communication satellite with a mass of 1410 kg at lift-off, has 12 Extended C-band transponders. PSLV-C17 will inject GSAT-12 into an elliptical Transfer Orbit (Sub-GTO) of 284 km perigee and 21,000 km apogee. Subsequently, the Liquid Apogee Motor of the satellite will be used to raise both apogee and perigee of the Satellite to place it in a circular orbit of 36,000 km altitude.
All the four stages of the launch vehicle have been fully assembled at the Vehicle Assembly Building at Shriharikota. Presently, the vehicle is going through various levels of electrical checkout operations and reviews.
GSAT-12 satellite has already undergone necessary testing at Shriharikota before commencing the filling of propellants in the Satellite on June 28, 2011. On July 3, 2011, GSAT-12 Satellite is planned to be integrated with PSLV-C17 vehicle at the Vehicle Assembly Building, after clearance by the Launch Authorisation Board.
On July 10, 2011, PSLV-C17 Vehicle (with the GSAT-12 Satellite onboard) is planned to be moved from the Vehicle Assembly Building to the Second Launch Pad.
On July 13, 2011 the 52.5 hour Countdown for the launch is expected to commence after launch rehearsals, clearance from Mission Readiness Review Teams and Launch Authorisation Board.
The lift-off of PSLV-C17 from the second launch pad is scheduled on July 15, 2011 between 16:48 and 17:08 hrs.
ISRO press release:
June 30, 2011
PSLV-C17 to Launch GSAT-12 on July 15, 2011
Preparations for the forthcoming launch of Polar Satellite Launch Vehicle (PSLV-C17) carrying India's communication satellite GSAT-12 are progressing well at Satish Dhawan Space Centre, Sriharikota. The launch of PSLV-C17/GSAT-12 mission is targeted for July 15, 2011.
GSAT-12 Communication satellite with a mass of 1410 kg at lift-off, has 12 Extended C-band transponders. PSLV-C17 will inject GSAT-12 into an elliptical Transfer Orbit (Sub-GTO) of 284 km perigee and 21,000 km apogee. Subsequently, the Liquid Apogee Motor of the satellite will be used to raise both apogee and perigee of the Satellite to place it in a circular orbit of 36,000 km altitude.
All the four stages of the launch vehicle have been fully assembled at the Vehicle Assembly Building at Shriharikota. Presently, the vehicle is going through various levels of electrical checkout operations and reviews.
GSAT-12 satellite has already undergone necessary testing at Shriharikota before commencing the filling of propellants in the Satellite on June 28, 2011. On July 3, 2011, GSAT-12 Satellite is planned to be integrated with PSLV-C17 vehicle at the Vehicle Assembly Building, after clearance by the Launch Authorisation Board.
On July 10, 2011, PSLV-C17 Vehicle (with the GSAT-12 Satellite onboard) is planned to be moved from the Vehicle Assembly Building to the Second Launch Pad.
On July 13, 2011 the 52.5 hour Countdown for the launch is expected to commence after launch rehearsals, clearance from Mission Readiness Review Teams and Launch Authorisation Board.
The lift-off of PSLV-C17 from the second launch pad is scheduled on July 15, 2011 between 16:48 and 17:08 hrs.
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ISRO's PSLV-C17 to launch GSAT-12 on July 15
Preparations are in full swing for the July 15 launch of the Polar Satellite Launch Vehicle (PSLV-C17) carrying India's communication satellite GSAT-12.
GSAT-12 with a mass of 1410 kg at lift-off, has 12 Extended C-band transponders, the Indian Space Research Organisation (ISRO) said in a statement.
PSLV-C17 would inject GSAT-12 into an elliptical Transfer Orbit of 284 km perigee (closest point to Earth) and 21,000 km apogee (farthest point to Earth).
Subsequently, the Liquid Apogee Motor of the satellite would be used to raise both apogee and perigee of the satellite to place it in a circular orbit of 36,000 km altitude.
"All the four stages of the launch vehicle have been fully assembled at the Vehicle Assembly Building at the Satish Dhawan Space Centre in Shriharikota.
Presently, the vehicle is going through various levels of electrical checkout operations and reviews", the Bangalore-headquartered ISRO said.
GSAT-12 has already undergone necessary testing at Shriharikota before commencing filling of propellants in the Satellite on June 28. On July 3, GSAT-12 satellite is planned to be integrated with PSLV-C17 vehicle at the Vehicle Assembly Building, after clearance by the Launch Authorisation Board.
On July 10, PSLV-C17 Vehicle (with GSAT-12 on board) is planned to be moved from the Building to the Second Launch Pad.
On July 13, the 52.5 hour countdown for the launch is expected to commence after launch rehearsals, clearance from Mission Readiness Review Teams and the Board.
The lift-off of PSLV-C17 from the second launch pad is scheduled on July 15 between 1648 and 1708 hrs.
ISRO's PSLV-C17 to launch GSAT-12 on July 15 - Brahmand.com
Preparations are in full swing for the July 15 launch of the Polar Satellite Launch Vehicle (PSLV-C17) carrying India's communication satellite GSAT-12.
GSAT-12 with a mass of 1410 kg at lift-off, has 12 Extended C-band transponders, the Indian Space Research Organisation (ISRO) said in a statement.
PSLV-C17 would inject GSAT-12 into an elliptical Transfer Orbit of 284 km perigee (closest point to Earth) and 21,000 km apogee (farthest point to Earth).
Subsequently, the Liquid Apogee Motor of the satellite would be used to raise both apogee and perigee of the satellite to place it in a circular orbit of 36,000 km altitude.
"All the four stages of the launch vehicle have been fully assembled at the Vehicle Assembly Building at the Satish Dhawan Space Centre in Shriharikota.
Presently, the vehicle is going through various levels of electrical checkout operations and reviews", the Bangalore-headquartered ISRO said.
GSAT-12 has already undergone necessary testing at Shriharikota before commencing filling of propellants in the Satellite on June 28. On July 3, GSAT-12 satellite is planned to be integrated with PSLV-C17 vehicle at the Vehicle Assembly Building, after clearance by the Launch Authorisation Board.
On July 10, PSLV-C17 Vehicle (with GSAT-12 on board) is planned to be moved from the Building to the Second Launch Pad.
On July 13, the 52.5 hour countdown for the launch is expected to commence after launch rehearsals, clearance from Mission Readiness Review Teams and the Board.
The lift-off of PSLV-C17 from the second launch pad is scheduled on July 15 between 1648 and 1708 hrs.
ISRO's PSLV-C17 to launch GSAT-12 on July 15 - Brahmand.com
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One only needs to read the following article and comments to see true face of westerners.
Boom! Indian space scientists watch in horror as rocket explodes minutes after take-off | Mail Online
Boom! Indian space scientists watch in horror as rocket explodes minutes after take-off | Mail Online
Pintu
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Take it with a grain of Salt, bro, even some of our desi media/journos go at par with them.
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Whatever it may be but the avg unenlightened britisher does read it and thinks everything it prints to be true.
they believe there measly aid is used to fund our space programme
we give more aid than we receive.
they believe there measly aid is used to fund our space programme
we give more aid than we receive.
gogbot
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There are dustbin papers in evey country , becuase there are dustbins in every country.Whatever it may be but the avg unenlightened britisher does read it and thinks everything it prints to be true.
they believe there measly aid is used to fund our space programme
we give more aid than we receive.
You should'nt generalise on that public opnnion alone.
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