ISRO News & Discussions

Discussion in 'Science & Technology' started by Varad, Apr 17, 2011.

  1. Varad
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    Varad Lieutenant FULL MEMBER

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    India to launch five satellites by June

    CHENNAI: India will launch five satellites by June, including one for advanced remote sensing and two for communications, say officials of the Indian Space Research Organisation (ISRO).

    The first launch, scheduled for April 20, will be of Resourcesat-2, intended for study and management of natural resources and sending back pictures and other data, and two other satellites.

    India has the largest constellation of remote sensing satellites in the world providing imagery in a variety of spatial resolutions from better than a metre ranging up to 500 metres, and is a major player in vending such data in the global market.

    ISRO will then launch two communication satellites - GSAT-8 from French Guyana and GSAT-12 from India - by June this year. These will serve the needs of the telecommunication and television sectors.

    Speaking to IANS, an ISRO official, who did not want to be named, said GSAT-8 will augment the growing demand for communication transponders (automatic receivers and transmitters for communication and broadcast of signals).

    With India in the process of developing a rocket that could carry a three-tonne satellite, GSAT-8 will be launched by Ariane rocket from French Guyana some time this May.

    Following that will be the launch of GSAT-12 using the Polar Satellite Launch Vehicle (PSLV) from ISRO's rocket port at Sriharikota in Andhra Pradesh, around 80 km from Chennai.

    Weighing 1,425 kg, GSAT-12, with 12 extended C band transponders, is expected to be launched some time in June.

    The satellite is expected to serve the Very Small Aperture Terminal ( VSAT )) sector, used to transmit data like point of sale transactions or to provide satellite internet access and others.

    Though PSLV rockets are largely used by ISRO to launch remote sensing/earth observation satellites, it has also been used to put into orbit communication satellites in geo transfer orbit (GTO).

    According to ISRO officials, the PSLV rocket that will carry GSAT-12 will weigh over 300 tonnes - heavier than the standard PSLV rocket that weigh around 290 tonnes at lift off.

    The rocket will be powered with much longer strap-on motors containing more fuel.

    ISRO is also mulling the launch of another remote sensing satellite, Megha-Tropiques in July, to study and understand the life cycle of convective systems and their role in the associated energy and moisture budget of the atmosphere in the tropical regions.

    Pre-launch work is on at Sriharikota for the April 20 flight of the PSLV that will carry three satellites - the 1,200 kg Resourcesat-2 satellite, the 92 kg joint Indo-Russian nanosatellite Youthsat for stellar and atmospheric studies, and a 105 kg microsatellite X-sat for imaging applications, built by the Singapore-based Nanyang Technological University.

    "Everything is progressing well and the launch will be at 10.12 a.m.," S. Satish, ISRO's director, Publications and Public Relations, told IANS.

    Resourcesat-2 was originally scheduled for launch in January this year but got postponed to February and then to April.

    Not wanting to risk a failure, the Indian space agency decided to test a gas motor fitted in the second stage/engine, powered by liquid fuel, for high temperature tolerance levels after dismantling the fully assembled rocket.

    This was the second time within an year that ISRO has dismantled a fully-assembled PSLV rocket to check out a component in the rocket's second stage.

    Last April, prior to the launch of Cartosat-2B satellite and a couple of other payloads, the rocket was dismantled to replace a faulty component.

    The 44-metre tall PSLV is a four-stage (engine) rocket powered by solid and liquid propellants alternatively. The first and third stages are fired by solid propellant and the second and fourth stages are fired by liquid propellant.

    India to launch five satellites by June - The Economic Times
     
    Last edited by a moderator: May 6, 2011
  2. DaRk KnIght
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    DaRk KnIght Lt. Colonel ELITE MEMBER

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    re: ISRO NEW AND DISCUSSIONS

    Great News for all Indians. Congrats :cheers:
     
  3. Varad
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    Varad Lieutenant FULL MEMBER

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    PSLV-C16/RESOURCESAT-2 Mission to be launched on April 20

    Bangalore, Apr 17, (PTI)

    PSLV-C16, carrying three satellites, will be launched at 10:12 hrs (IST) on April 20 from the Satish Dhawan Space Centre in Sriharikota.

    The Board, which met yesterday in Sriharikota, reviewed the readiness of the launch vehicle, spacecraft systems and ground stations and has authorised the commencement of the 54-hour countdown during the early hours of April 18, an ISRO release said.

    During the countdown, propellant-filling operations of the liquid propellant second stage (PS2) and fourth stage (PS4) of the launch vehicle would be carried out, it said.

    Mandatory checks on the launch vehicle and spacecraft - including charging of batteries and pressurisation of propellant tanks would also be performed, it said. Readiness of launch infrastructure such as tracking radar systems and communication networks would be checked, it added.

    PSLV-C16 will launch RESOURCESAT-2, YOUTHSAT and X-SAT satellites. RESOURCESAT-2, built by ISRO and the primary satellite, is an advanced remote sensing satellite weighing 1,206 kg for facilitating the study and management of natural resources.

    YOUTHSAT, weighing 92 kg, is a joint Indo-Russian satellite for stellar and atmospheric studies. X-SAT, weighing 106 kg, is a microsatellite for imaging applications built by Nanyang Technological University (NTU), Singapore.

    PSLV-C16/RESOURCESAT-2 Mission to be launched on April 20
     
  4. Varad
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    Varad Lieutenant FULL MEMBER

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    Lets hope the PSLV gets up succesfully and then we'll be able to turn our attention towards the GSLV and indigenous cryogenic engine.
     
  5. Varad
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    Varad Lieutenant FULL MEMBER

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    :what: ISRO’s research failure may throw space mission out of orbit

    India’s major space missions, including the manned flight scheduled for 2016, could be delayed because of the failure of Indian Space Research Organisation (ISRO) to develop cryogenic engine required for putting heavy satellites into orbit.

    It was on April 15, 2010 an indigenously developed cryogenic engine was used in the Geo-Synchronous Satellite Launch Vehicle (GSLV-D3). But the mission with GSAT-4, a heavy satellite onboard, fell into the Bay of Bengal within minutes of lifting off from Satish Dhawan Space Centre at Sriharikotta due to the malfunctioning of the cryogenic engine.

    Kerala-born K Radhakrsihnan, chairman of had said on that black Vishu (Malayalees’ new year) that ISRO would launch another GSLV mission with an indigenously developed cryogenic engine within one year. But top ISRO scientists feel this may not materialize soon.

    “It is not that easy to develop a cryogenic engine which uses liquid hydrogen and liquid oxygen as fuel and oxidizer. 17 years of research work into it has proved that we do not have the right kind of people,” a senior ISRO scientist said.Only cryogenic engines can power the launch vehicles required to put heavy communication satellites into orbits at a height of 36,000 km from the earth.

    Though the country had launched seven GSLV missions so far, five of them were failures. All but one had cryogenic engines bought from Russia. The last GSLV launched in December 25, 2010 too failed throwing the country’s space programme in disarray. “A fear psychosis prevails among the entire ISRO establishment because of two consecutive failures,” another scientist said.

    Australia-born Morris Jones, an international space analyst,
    expressed apprehensions over these frequent failures.
    “The failure rates are far too high when compared to other nations. India has a mature space programme and should have more reliability than this,” Jones told DNA. He also doubted the possibilities of GSLV getting Man Rated for the scheduled manned space mission. Man Rating is the process of certifying a rocket as fit for carrying astronauts.

    The failures of the GSLV missions have unnerved the country’s space managers. This resulted in the twice postponement of the launch of Polar Satellite Launch Vehicle (PSLV-D16 ) mission which was to put into orbit the Resourcesat-2.

    ISRO’s research failure may throw space mission out of orbit - India - DNA
     
  6. @speaks
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    @speaks Captain SENIOR MEMBER

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    India to launch five satellites by June

    CHENNAI: India will launch five satellites by June, including one for advanced remote sensing and two for communications, say officials of the Indian Space Research Organisation (ISRO).

    The first launch, scheduled for April 20, will be of Resourcesat-2, intended for study and management of natural resources and sending back pictures and other data, and two other satellites.

    India has the largest constellation of remote sensing satellites in the world providing imagery in a variety of spatial resolutions from better than a metre ranging up to 500 metres, and is a major player in vending such data in the global market.

    ISRO will then launch two communication satellites - GSAT-8 from French Guyana and GSAT-12 from India - by June this year. These will serve the needs of the telecommunication and television sectors.

    Speaking to IANS, an ISRO official, who did not want to be named, said GSAT-8 will augment the growing demand for communication transponders (automatic receivers and transmitters for communication and broadcast of signals).

    With India in the process of developing a rocket that could carry a three-tonne satellite, GSAT-8 will be launched by Ariane rocket from French Guyana some time this May.

    Following that will be the launch of GSAT-12 using the Polar Satellite Launch Vehicle (PSLV) from ISRO's rocket port at Sriharikota in Andhra Pradesh, around 80 km from Chennai.

    Weighing 1,425 kg, GSAT-12, with 12 extended C band transponders, is expected to be launched some time in June.

    The satellite is expected to serve the Very Small Aperture Terminal ( VSAT )) sector, used to transmit data like point of sale transactions or to provide satellite internet access and others.

    Though PSLV rockets are largely used by ISRO to launch remote sensing/earth observation satellites, it has also been used to put into orbit communication satellites in geo transfer orbit (GTO).

    According to ISRO officials, the PSLV rocket that will carry GSAT-12 will weigh over 300 tonnes - heavier than the standard PSLV rocket that weigh around 290 tonnes at lift off.

    The rocket will be powered with much longer strap-on motors containing more fuel.

    ISRO is also mulling the launch of another remote sensing satellite, Megha-Tropiques in July, to study and understand the life cycle of convective systems and their role in the associated energy and moisture budget of the atmosphere in the tropical regions.

    Pre-launch work is on at Sriharikota for the April 20 flight of the PSLV that will carry three satellites - the 1,200 kg Resourcesat-2 satellite, the 92 kg joint Indo-Russian nanosatellite Youthsat for stellar and atmospheric studies, and a 105 kg microsatellite X-sat for imaging applications, built by the Singapore-based Nanyang Technological University.

    "Everything is progressing well and the launch will be at 10.12 a.m.," S. Satish, ISRO's director, Publications and Public Relations, told IANS.

    Resourcesat-2 was originally scheduled for launch in January this year but got postponed to February and then to April.

    Not wanting to risk a failure, the Indian space agency decided to test a gas motor fitted in the second stage/engine, powered by liquid fuel, for high temperature tolerance levels after dismantling the fully assembled rocket.

    This was the second time within an year that ISRO has dismantled a fully-assembled PSLV rocket to check out a component in the rocket's second stage.

    Last April, prior to the launch of Cartosat-2B satellite and a couple of other payloads, the rocket was dismantled to replace a faulty component.

    The 44-metre tall PSLV is a four-stage (engine) rocket powered by solid and liquid propellants alternatively. The first and third stages are fired by solid propellant and the second and fourth stages are fired by liquid propellant.

    India to launch five satellites by June - The Economic Times
     
  7. flanker143
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    flanker143 Captain SENIOR MEMBER

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    good going isro !!! good luck..!!
     
  8. Varad
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    All set for PSLV-C16 launch on Wednesday


    The PSLV-C16 on its launch pad in Sriharikota.
    CHENNAI: The stage has been set for the launch of the Polar Satellite Launch Vehicle (PSLV-C16) from the first launch pad at Sriharikota on April 20 at 10.12 a.m. The PSLV-C16 will put in orbit three satellites — India's Resourcesat-2, an Indo-Russian satellite called Youthsat and a micro-satellite named X-Sat from the Nangyang Technological University of Singapore.

    The Launch Authorisation Board (LAB), which met at Sriharikota on Saturday, cleared the rocket's lift-off.

    “Everything is going on well. Things are smooth. This is one of the standard launches by the PSLV,” said S. Ramakrishnan, Director, Liquid Propulsion Systems Centre (LPSC) of the Indian Space Research Organisation (ISRO).

    The LAB reviewed the readiness of the launch vehicle, the spacecraft systems and the ground stations, and authorised the 54-hour countdown to begin at 3.40 a.m. on Monday.

    ISRO spokesman S. Satish said that during the countdown, the second and the fourth stages of the rocket would be filled with liquid propellants. Mandatory checks of the vehicle and the three spacecraft, including the charging of the batteries and pressurisation of the propellant tanks, would be done. Readiness of the launch infrastructure such as radar systems that track the vehicle and communication networks would be reviewed, Mr. Satish said.

    Resourcesat-2, built by ISRO, is the primary satellite in this mission. It is an advanced remote-sensing satellite, weighing 1,206 kg. An important feature of Resourcesat-2 is that it carries three cameras — with high, medium and coarse resolutions — on a single platform. The images taken by the cameras will be useful for estimating the health of crops, locating ground water, keeping a surveillance on deforestation, and monitoring the level of water in reservoirs and lakes and the snow-melt in the Himalayas and the consequent receipt of water in the rivers.

    The 92-kg Youthsat has been built by India and Russia, with one payload from Russia and two from ISRO. The satellite will be used for stellar and atmospheric studies, including watching the activities in the sun and their effect on the earth's upper atmosphere. The 106-kg X-Sat will be used for imaging applications.

    More to follow

    The ISRO would have a busy schedule ahead with PSLV launches in the coming months, Mr. Satish said. A PSLV would put in orbit GSAT-12 in June from Sriharikota. This would be followed by the launch of Megha-Tropiques satellite, another GSAT and Radar Imaging Satellite (RISAT-1), all during this year, from Sriharikota. Another GSAT would be put in orbit in June 2011 from Kourou island, French Guiana, by an Ariane rocket from Arianespace.

    The Hindu : Front Page : All set for PSLV-C16 launch on Wednesday
     
  9. Varad
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    ISRO begins countdown for launch of PSLV-C16 mission

    The Indian Space Research Organisation (ISRO) today began the 54.5 hour countdown for the launch of the advanced remote sensing satellite Resourcesat-2 by the Polar Satellite Launch Vehicle (PSLV-C16) from the spaceport at Sriharikota on April 20.

    The launch is scheduled for 1012 hours on April 20 from the Satish Dhawan Space Centre at Sriharikota, popularly known as SHAR.

    The countdown, which began at 0342 hours today, was progressing smoothly, ISRO sources said.

    Apart from Resourcesat-2, the PSLV-C16 will also launch two other satellites, Youthsat and X-Sat.

    ISRO had said yesterday that the Launch Authorisation Board (LAB) had cleared the launch of PSLV-C16.

    "LAB reviewed the readiness of the launch vehicle, spacecraft systems and ground stations and has authorised the commencement of the 54 hour count down during the early hours of April 18, 2011," it said.

    During the count down, propellant-filling operations of the liquid propellant second stage (PS2) and fourth stage (PS4) of the launch vehicle will be carried out.

    Mandatory checks on the launch vehicle and spacecraft - including charging of batteries and pressurisation of propellant tanks - will be performed. Readiness of launch infrastructure such as tracking radar systems and communication networks will also be checked, the release said.

    The 1206 kg Resourcesat-2, the primary satellite, has been built by ISRO for facilitating the study and management of natural resources.

    The 92 kg Youthsat is a joint Indo-Russian satellite for stellar and atmospheric studies. X-Sat, weighing 106 kg, is a microsatellite for imaging applications built by Nanyang Technological University (NTU), Singapore.

    United News of India adds:

    This would be the 18th mission of PSLV series. In its previous 17 flights, the four-stage workhorse launch vehicle of the ISRO had 16 consecutive successful missions, proving its versatality and reliability.

    n the previous 17 flights between 1993 and 2010, the PSLV had placed about 20 Indian and 25 Foreign satellites in a variety of orbits, ranging from Polar Sun Synchronous to Geosynchronous Transfer Orbit to Highly Elliptical and Low Earth Orbits.

    The same PSLV had successfully launched Chandrayaan-1 spacecraft in October 2008. However, its mission life ended after ten months of successful exploration of the lunar surface.

    Incidentally, the April 20 mission would be the first for ISRO in four months after the failure of the GSLV mission on Christmas Day, when the vehicle, within a minute of the take-off, disintegrated and exploded in mid-air due to snapping of connectors in the first stage that provide command to the onboard computer systems in the third stage -- cryogenic stage.

    The GSLV-F06 mission on December 25, 2010, was scheduled to place GSAT-5P into the orbit, but the mission was not successful.

    The PSLV-C16 mission would be the fourth mission for ISRO in the last 15 months. It had tasted only one success, when PSLV-C15 successfully launcheed five Satellites - CARTOSAT-2B, ALSAT-2A, two nanosatellites-NLS-6.1 and 6.2 and a pico-satellite- STUDSAT on July 2 last year.

    ISRO had faced a setback as its two GSLV missions, GSLV-D3 carrying GSAT-4 satellite, and GSLV-F06, carrying Russian cryogenic stage, failed in April and December, respectively.

    The GSLV-D3 mission provided an opportunity for the ISRO for flight testing of its indigenous Cryogenic Stage but it was was not successful, as the cryogenic stage failed to ignite.

    ISRO begins countdown for launch of PSLV-C16 mission | NetIndian | India News | Latest News from India | Breaking News from India | Latest Headlines
     
  10. flanker143
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    flanker143 Captain SENIOR MEMBER

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    shubh shubh bol yaar !!! Lol !!
     
  11. Varad
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    Dont worry sab theek hoga yaar. :toast_sign::india:
     
  12. CONNAN
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    Production of systems for satellites to be increase

    The ISRO Inertial Systems Unit here will step up production of systems for satellites and launch vehicles because of ISRO's plan to increase the frequency of satellite launches to meet the rising demand.

    The fabrication of Polar Satellite Launch Vehicles is mostly done in Thiruvananthapuram, and various units under ISRO here are gearing up to meet the demand for components.

    G. Ravindranath, who recently assumed charge as Director of the ISRO Inertial Systems Unit, said that besides the production of inertial systems, the fabrication of solar arrays and instruments for satellites was being stepped up.

    The unit, which boasts facilities for precision fabrication, assembly and integration of systems and testing, is capable of making and delivering inertial systems for the country's entire space programme.

    The Hindu : Cities / Thiruvananthapuram : Production of systems for satellites to be increased
     
  13. BlueOval
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    ISRO successfully launches PSLV-C16


    Sriharikota: The Indian Space Research Organisation (ISRO) on Wednesday successfully launched Polar Satellite Launch Vehicle PSLV-C16 from Sriharikota.This is the 18th launch for the PSLV by ISRO, which has a fairly impressive track record of 16 uninterrupted launches.The PSLV-C16 has injected into the orbit three satellites - India's remote-sensing satellite Resourcesat-2; an India-Russian satellite named Youthsat; and a mini-satellite, X-Sat, from the Nangyang Technological University of Singapore.

    Resourcesat-2, weighing 1206 kg, has a rare combination of three cameras with high, medium and coarse resolutions. The high resolution cameras can take both black & white and colour pictures. It can take images of land as wide as 70 km. The images can be used for locating ground water or minerals, estimate crop acreage, find out the health of the crops, identify rich fishing zones in the sea, categorise wastelands that can help in their reclamation, map coastal zones, keep a watch on water-bodies such as reservoirs, lakes and canals, and so on.
    Resourcesat-2 has an additional payload called Automatic Identification System from Canada. This can provide information on the position of ships, their speed etc. The satellite has a mission life of five years.

    The 92-kg Youthsat has three payloads - one from Russia and two from the ISRO. They can be used to study the ionosphere, solar X-ray fluxes and their effect on the upper layers of the earth's atmosphere.The 106-kg X-Sat is a remote-sensing satellite. It can take images of the earth, process them and transmit more refined images to the ground.

    ISRO successfully launches PSLV-C16 - India News - IBNLive
     
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  14. Barney Stinson
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    Saw the Launch on TV..Great Work ISRO :india:
     
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  15. Coltsfan
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    Coltsfan <b>SENIOR MEMBER</b> SENIOR MEMBER

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    :cheers:
     

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