ISRO News & Discussions

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

  1. Varad
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    ISRO to launch French satellite in 2012

    Continuing its programme of commercial launch of foreign satellites, Indian Space Research Organisation (ISRO) has lined up launch of an image capturing satellite of France next year, according to Parivakkam Subramaniam Veeraraghavan, director, Vikram Sarabhai Space Centre (VSSC), a unit of ISRO.

    “Because of our cost effective technology, many developed nations, including France and the US are willing to launch their satellites with our system. Many smaller and mini satellite launching programmes on commercial basis are in offing,” Veeraraghavan said while attending the National Technology Day seminar organised by National Aluminum Company (Nalco) here yesterday.

    The French satellite SPOT (Satellite Pour l'observation de la Terre) is a high-resolution, optical imaging, earth observation satellite system. Currently SPOT 5 is working in the space and is expected to be withdrawn by the end of 2013. India will launch the SPOT 6 satellite, which will provide continuous high definition images of earth.
    Due to the cost effectiveness of India-made PSLV (Polar Satellite Launch Vehicle) and GSLV (Geosynchronous Satellite Launch Vehicles), many countries prefer India to launch their satellites. Recently ISRO successfully placed Singapore's first experimental satellite in space. India has so far launched 27 foreign satellites and 60 India-made satellites.

    Currently, it costs $25,000 per kg to launch a satellite. The satellites can weigh 500 to 5,000 kg. Sometimes mini-satellites weighing 15-20 kg are bundled with the rocket and are placed in desired orbits.

    However, profit realisation from satellite launch is currently lower because of high cost of fuel and one-time use of the rockets. Veeraraghvan said, ISRO is working on a project to develop reusable satellite launcher.

    “The reusable spacecraft would minimise the launching cost by 90 percent. We have set 2030 as deadline to reach this goal,” he said.

    In next five years, ISRO has plans to launch one ASTROSAT, which is a low cost version of Hubble Telescope, one GPS navigation satellite and a special satellite that can provide Internet services, informed the VSSC director.

    ISRO to launch French satellite in 2012
     
  2. Varad
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    All set for GSAT-8 launch from Kourou on May 20

    The stage is set for the launch of the Indian communication satellite GSAT-8 by a highlift Ariane 5 launcher from Kourou in French Guyana at 0207 hrs (IST) on May 20.


    GSAT, carrying 24 Ku band transponders that would help enhance Direct- to-Home broadcast capacity, will be the heaviest among its class of Indian communication satellites, weighing 3100 kg.


    Its payload also includes a Gagan transponder for navigation purposes to be utilised by Airports Authority of India.


    Gagan is part of a three-payload series to be used for navigation purposes through the geographical position system mode.


    Two other similar payloads will be launched onbaord GSAT-9 in early 2012 and GSAT-10 that would follow.


    Briefing reporters on the launch, ISRO Chairman K Radhakrishnan said he would be leaving for Kourou tonight for final launch review.


    He said the flight would last 30 minutes before GSAT was hurled into a geosynchronous transfer orbit. From the eliptical orbit, ISRO mission controllers would fire the apogee booster motors for three days on May 21, 22 and 23 to take the satellite to the desired orbit. Following this, the solar panels would be deployed and the transponders tested till June 1.


    Apart from GSAT-8, ISRO would also launch GSAT-10, another communication satellite, utlising an Ariane launcher. Besides, it has also been decided to launch two other satellites through acquired launchers. They are INSAT 3DR and GSAT-11.


    Mr Radhakrishnan said ISRO would augment the transponder capacity to 320 transponders of Ku, Ka, C band, Extended C band and S band from the existing capacity of 151 plus 86 leased out transponders from abroad.


    There was a huge demand for transponders in the country, he added.


    He said work had also commenced for launcher integration at the Satish Dhawan Spaceport in Sriharikota for the launch of PSLV-C17 scheduled for July.


    It would carry GSAT 12, weighing 1400 kg. The launcher would be of the same type that launched the Chandrayaan-1 and hurl the satellite into a eliptical orbit 21,000 km above the earth. The satellite carring 12 extended C band transponders would have a lifespan of five years.


    Mentioning that ISRO had a busy season ahead, he said the the second stage of GSLV Mark 111, that would be fired using an indigenous cryogenic engine, would be tested in July. The S-210 engine would be the third heaviest in the world and could be used for launching four tonne class satellites.


    He said apart from this, two more PSLV launches, the workhorse of ISRO, were scheduled later. They were PSLV-C18 and PSLV-C19.


    PSLV C-19 would launch the Indo-French satellite Megha Trophiques between September and October 15.

    All set for GSAT-8 launch from Kourou on May 20 | NetIndian | India News | Latest News from India | Breaking News from India | Latest Headlines
     
  3. Varad
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    ISRO to set up several new critical facilities

    The Indian Space Research Organisation (ISRO) is enhancing its capabilities by setting up more than half a dozen critical facilities across its installations, even as it is targeting to nearly double its transponder capacity over the next one-and-a-half years.

    However, ISRO chairman K. Radhakrishnan, who announced setting up of the facilities at a press conference here on Saturday, declined to provide details of the investments.

    They include a hypersonic wind tunnel to study re-entry and a plasma wind tunnel to study the behaviour of materials at high speed, which would be set up at the Vikram Sarabhai Space Centre in Trivandrum.

    A thrust chamber testing facility for high-thrust cryogenic engines will be set up at Mahendragiri, and a new mission control centre to look at multiple mission preparations simultaneously will come up at Sriharikota.

    A national database for emergency management and a multi-mission earth observation centre for satellites will be set up at Hyderabad, besides an advanced research and development centre for spacecrafts to come up on 530 acres in the Science City at Chitradurga.

    As PSLV and GSLV launches have increased, Dr. Radhakrishnan said: “We are trying to integrate the sub-systems of rockets at Sriharikota since they are currently manufactured in different parts of the country.” The project would take about two-three years, he added.

    While the ISRO currently has 151 transponders, plans are afoot to add 150 more over the next one-and-a half years. Eighty-six transponders have been leased from foreign satellite operators at present.

    “We had 211 transponders in the C, extra C, Ku and S bands. In the last two years, some satellites were decommissioned, while the INSAT 4B's capacity came down partially,” Dr. Radhakrishnan said.

    Meanwhile, the Space Commission will on May 24 review the outcome of the two committees that were set up to review the GSLV programmes after the GSLV F06 rocket failed in December 2010.

    Experts including Professor Yashpal, U.R. Rao and A.P.J. Abdul Kalam have been reviewing the reports submitted by the committees headed by G. Madhavan Nair and K. Kasturirangan.

    While the Programme Review and Strategy committee, headed by Dr. Kasturirangan, looked into all aspects of GSLV and INSAT capabilities, Dr. Nair's committee analysed the failure of the GSLV.

    Dr. Radhakrishnan said that unless the “man rating” of the GSLV was achieved for high levels of reliability, it was difficult for him to commit a date for India's first manned mission.

    The Hindu : Sci-Tech / Science : ISRO to set up several new critical facilities
     
  4. Varad
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    ISRO missions delayed, courtesy GSLV project

    India’s key satellite launch project, the Geosynchronous Satellite Launch Vehicle (GSLV) programme, is ironically posing delays for the country’s space programme.

    The back-to-back failure of the GSLV launches in April and December 2010 has forced the Indian Space Research Organisation (ISRO) to conduct a complete audit of the programme.

    ISRO chairman K Radhakrishnan on Saturday said that following the failure of the GSLV (D3) and the GSLV-F06, ISRO’s main focus would be to do a total audit of the GSLV programme and “find out its vulnerabilities” before going in for future launches.

    The GSLV programme suffered a huge setback when the GSLV (D3) and the GSLV-F06 suffered back-to-back failures with the rockets plunging into Bay of Bengal minutes after the respective launches.

    The space agency’s future launches, which include the Chandrayaan-2, the second unmanned mission to Moon, and the prestigious human space programme are scheduled to be launched onboard the GSLV rockets.

    Although Radhakrishnan said the two key missions were on schedule, he reiterated that Isro’s priority was to ensure that the GSLV was a reliable vehicle.

    On the GSLV-F06 failure, he said the GSLV review committee, headed by former Isro chairman K Kasturirangan, and a failure analysis committee, headed by Madhavan Nair (Radhakrishnan’s predecessor), had already submitted their reports to the space commission which will review them on May 24.

    “Failure of the shroud (cover) at the bottom of the Russian cryogenic stage has been identified as the main reason for the failure,” Radhakrishnan said.

    On the GSLV Mk III, which is being conceived and designed to make Isro fully self-reliant in launching 4 tonne-plus weighing communication satellites of INSAT-4 class, he said static testing is currently on which would continue till 2012.

    ISRO missions delayed, courtesy GSLV project - India - DNA
     
  5. @speaks
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    India lines up three PSLV launches this year

    Indian Space Research Organisation is lining up three PSLV launches from Sriharikota spaceport by October this year, its Chairman K Radhakrishnan said.

    He said PSLV-C17 would launch GSAT-12, equipped with 12 extended C-band transponders, in July.

    PSLV-C18 and PSLV-C19 would launch Megha-tropiques, an Indo-French joint mission, and microwave remote-sensing satellite, RISAT-1, with synthetic aperture radar during September-October this year.

    ISRO officials said India's GSAT-8 satellite is scheduled to be launched by European space consortium Arianespace's Ariane-5 rocket at 0207 hours (IST) on May 20 from French Guiana.

    Radhakrishnan said GSAT-8, one of the heaviest satellites built by ISRO, weighs 3100 kg at lift-off and is equipped with 24 Ku-band transponders which would augment direct-to-home services.

    Meanwhile, ISRO officials said the Failure Analysis Committee, headed by former ISRO Chairman G Madhavan Nair, set up by ISRO following the failure of the GSLV-F06 mission, and the Programme Review and Strategy Committee, chaired by K Kasturirangan, to look into the future of the GSLV programme, have submitted their reports.

    India lines up three PSLV launches this year
     
  6. bhagat
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    Bangalore: Launch of Indian satellite put off to May 21


    Bangalore, May 16 (IANS) The launch of and Indian geo-stationary satellite (GSAT-8) on board an Ariane-V rocket from Kourou in French Guiana has been postponed by a day to May 21, the state-run Indian Space Research Organisation (ISRO) said late Monday.

    "The launch postponement has been necessitated for certain additional inspection by the launch agency Arianespace. The timing of the launch will be confirmed soon," the Indian space agency said in a statement here.

    The indigenously built 3.1-tonne (3,100kg) GSAT-8 has 24 Ku-band transponders for direct-to-home (DTH) services by state-run and private broadcasters.

    Earlier, the European Space Agency's (ESA) informed the Indian space agency that GSAT-8 would be launched May 20 at 02:27 IST from its Kourou spaceport in South America.

    Within 30 minutes after the launch, Ariane will deploy the heavy satellite in a elliptical geo-synchronous transfer orbit (GTO) and the space agency's master control facility (MCF) at Hasan in Karnataka, about 180 km from Bangalore, will take over its command and control.

    The satellite will be gradually put in the 36,000km geosynchronous orbit over the subsequent days and its antenna and solar panels will be deployed. The MCF will also test and monitor the health parameters of the payloads by June 1. It will be available for DTH services from next month.

    Along with GSAT-8, the space agency is sending the global position system (GPS) aided geo augmented navigation (Gagan) to improve the accuracy of the United States' GPS.
    Mangalorean.Com- Serving Mangaloreans Around The World!
     
  7. Varad
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    GSAT-8 communication satellite launched successfully

    BANGALORE: India's latest communication satellite GSAT-8 was today successfully launched by Arianespace from Kourou in French Guiana to give a boost to direct-to-home services in the country.

    GSAT-8 was injected into space by European launcher Arianespace's Ariane 5 rocket which lifted-off at 02.08 am (IST), with Japan's ST-2 spacecraft as co-passenger.

    French Guiana is a region of France on the North-East coast of South America.

    Weighing 3,100 kg at lift-off, GSAT-8 is one of the heaviest and high-powered satellites built by the Bangalore-headquartered Indian Space Research Organisation.

    An ISRO team, which witnessed the launch, expressed delight over the successful mission.

    "I am extremely happy to announce that ISRO's Master Control Facility at Hassan near Bangalore has confirmed the reception of signals from GSAT-8 and taken charge of the command and control of GSAT-8 immediately after its injection into the geo-stationary transfer orbit," ISRO Chairman K Radhakrishnan said.

    "...This (the launch) is another great moment for us...," he said.

    Radhakrishnan said the user community in India was looking forward for the operationalisation of the 24 high-power Ku band transponders into the Indian National Satellite system.

    ISRO officials said the launch was doubly gratifying as the space agency had lost two satellites last year in two unsuccessful GSLV missions launched from the home soil. ISRO was desperately looking to augment transponder capacity, which is in great demand.

    Built by Japan's Mitsubishi Electric Company, ST-2 would be operated by the ST-2 Satellite Ventures joint company of Singapore Telecommunications Ltd (SingTel) and Taiwan's Chunghwa Telecom Company Ltd.

    GSAT-8 carried 24 transponders to augment India's Ku-band relay capabilities - primarily for direct-to-home TV broadcast services - with a coverage zone including the entire Indian subcontinent.

    Additionally, GSAT-8 carried the two-channel GAGAN system for aircraft navigation assistance over Indian airspace and adjoining areas.

    GSAT-8 communication satellite launched successfully - The Times of India
     
  8. Varad
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    Orbit of GSAT-8 satellite raised further

    In the second orbit-raising manoeuvre, the Liquid Apogee Motor on board India’s advanced communication satellite GSAT-8 was fired for nearly 36 minutes on Monday by commanding the satellite from ISRO’s Master Control Facility, Hassan.

    With the LAM firing conducted at 12:22 p.m. for 35.8 minutes, GSAT-8 perigee (closest point to Earth) has been raised to 32,385 km. The apogee (farthest point to Earth) height remains at 35,768 km. The inclination of the orbit with respect to the equatorial plane has been reduced to 0.06 degree.

    “GSAT-8 now has an orbital period of 22 hours 29 minutes. The satellite will now be in the continuous radio visibility of MCF, Hassan”, the Bangalore-headquartered ISRO said.

    GSAT-8 was launched by the European Ariane-5 launch vehicle on May 21 from Kourou, French Guiana. The launch vehicle had placed GSAT-8 in an orbit with a perigee of 258 km and apogee of 35,861 km with an inclination of 2.5 degree with respect to the equatorial plane.

    With the first orbit raising manoeuvre carried out from MCF, Hassan on Sunday, GSAT-8 had been put in an intermediate orbit of 15,786 km perigee and 35,768 km apogee and the orbital inclination was reduced to 0.5 degree with respect to the equatorial plane.

    The next orbit raising manoeuvre to place the satellite in near geosynchronous orbit is planned for Tuesday. Deployment of the two solar panels and the two antennas would be carried out subsequently, ISRO said.

    The Hindu : Sci-Tech / Science : Orbit of GSAT-8 satellite raised further
     
  9. Varad
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    GSAT- 8 satellite placed in geosynchronous orbit news

    New Delhi: India's advanced communication satellite, GSAT-8, has been put into its final orbital configuration, and is now pointing towards the Earth on a continuous basis, the Indian Space Research Organisation (ISRO) has said. The satellite will have an orbital period of 23 hours 45 minutes.

    GSAT-8 has now reached its final orbital position of 55 deg East where it is co-located with the INSAT-3E satellite.

    The satellite's orbit has a perigee of 35,543 km, apogee of 35,770 km and an orbital inclination of 0.04 deg with respect to the equatorial plane, an ISRO press release said.

    The satellites solar arrays have been deployed and they are tracking the Sun and generating electrical power. These solar arrays are designed to generate 6,240 W of electrical power.


    Two large dual grid Ku-band antennae have been opened and are pointing towards the Earth.

    The GSAT-8 was launched on 21 May from Kourou, French Guiana by Arianspace onboard their Ariane-5 launcher .

    In-orbit Testing (IOT) of 24 Ku-band transponders of GSAT-8 is scheduled to begin on 1 June 2011 and the satellite is expected to be ready for service in about a month.

    Testing of the GAGAN navigational payload will be conducted from the new Navigation Control Centre at Kundanahalli near Bangalore, the release added.

    GSAT-8 is a high-power communication satellite that is being inducted into the INSAT system. Weighing about 3100 kg at lift-off, it is carrying 24 transponders in Ku band and a two-channel GPS Aided Geo Augmented Navigation (GAGAN) payload operating in L1 and L5 bands.

    The Ku-band transponders will augment the capacity in the INSAT system. Among other things, they will augment Direct-to-Home (DTH) and radio services by state-run and private operators.

    domain-b.com : GSAT- 8 satellite placed in geosynchronous orbit
     
  10. Capt.Popeye
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    Congratulations to ISRO on the successful launch of GSAT-8. Once the satellite is operationalised, that will be a real feather in te cap of ISRO. Now the news of successful launch of GSLV is the milestone that we need to wait for.
     
  11. Varad
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    Cream of IIST graduates to join ISRO soon

    THIRUVANATHAPURAM: A sweet harvest season is approaching for the Indian Space Research Organisation (ISRO). By Juneend, the first batch of students of ISRO's Indian Institute of Space Science and Technology (IIST) here the first products of the space agency's 'catch them young' policy will exit its portals, many of them walking straight into jobs at various space units across the country.
    "By the third week of June, the first batch will be out. The students are presently in the middle of their projects which should be completed by mid-June. By July, they will be posted to various units," IIST director KS Dasgupta said. All students who achieve a specific cutoff mark set by the IIST will be directly absorbed into various units of the Space Department, he said.
    The first batch has about 150 students in three BTech courses offered by IIST Avionics, Aerospace Engineering and Physical Sciences. Meritorious students have a job assured at the over 20 spacerelated units of ISRO, including research facilities such as the Physical Research Laboratory (PRL).
    Five of the first-batch students are presently doing their projects at the Universities Space Research Association (USRA), US, while one is set to attend an advanced ninemonth course in aerospace engineering at the California Institute of Technology (Caltech).
    Inaugurated on September 14, 2007, by the then ISRO Chairman G Madhavan Nair, the IIST was ISRO's answer to the acute human resources crunch the space agency expected to face in the immediate future. The USP of IIST was an assured job at some of the most technically advanced institutions in the country. The students also sign a bond promising their services for a minimum of five years.
    For a time, IIST operated out of a temporary campus at Veli. In 2010, the IIST fully shifted to a permanent campus at Valiyamala adjacent to ISRO's Liquid Propulsion Systems Centre.

    Cream of IIST graduates to join ISRO soon - southindia - Kerala - ibnlive
     
  12. Mr.Ryu
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    Like MBBS all IIT and Technical persons must serve in DRDO and other Agency, But government must increase the pay to retain them and work culture too. See our poor MP pay Rs5 for their meal and Rs1 for Coffee/Tea. Cut to them give it to military and these guys.
     
  13. Varad
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    Hopefully we will be able to reduce attrition rates in key goverment sectors. Some good policies need to be implemented for this.
     
  14. Varad
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    India has firm orders to launch 12 foreign satellites

    ndia has firm orders to launch 12 foreign satellites over the next few years, Chairman of Indian Space Research Organisation K Radhakrishnan said on Wednesday.
    He said ISRO has so far launched 26 foreign satellites by the home-grown Polar Satellite Launch Vehicle (PSLV).
    "We have today about 12 satellites...a firm order is there and scheduled to be launched in the coming two years," he told reporters.
    ISRO officials said these satellites were mainly Canadian, German and Indonesian, including a 800-kg spacecraft - environment monitoring satellite - from DLF Germany.
    Others mainly fall in the 40-100 kg category though there are some micro-satellites also that India would launch.
    Officials of the space agency would not talk about price-points for these launches, terming them to be "market-sensitive". But market sources say launching one kg of payload would cost around USD 20,000.
    Asked if the controversial Antrix-Devas deal (Antrix is the marketing arm of ISRO) had an impact on ISRO in terms of "pull-back" on launches of foreign satellites from Indian soil, Radhakrishnan replied in negative.
    "We do not think (that there is an impact). There is a very strong demand for launching a few of the world-class remote sensing satellites by (India''s) PSLV", he said.

    India has firm orders to launch 12 foreign satellites - PTI -
     
  15. Varad
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    No design deficiency in GSLV, says Failure Analysis Committee

    A failure analysis committee has given the thumbs up to India's Geo-Synchronous Satellite Launch Vehicle saying no design deficiency has been found despite the two failures it suffered last year raising serious concern over its reliability.

    "We could not find any design deficiency...," said FAC Chairman and former chairman of Indian Space Research Organisation (ISRO) G Madhavan Nair.

    Last year, ISRO suffered set backs after two GSLV missions, one with the indigenous cryogenic engine and stage and another with the imported Russian ones, failed.

    Thereafter, ISRO constituted the FAC to carry out an in-depth analysis of the flight data of GSLV-F06 as well as the data from the previous six flights of GSLV; establish reasons for the failure of GSLV-F06 flight and recommend corrective actions on the GSLV vehicle including the remaining one Russian Cryogenic Stage.

    The FAC had 11 experts drawn from within ISRO and outside.

    Nair said the problem with GSLV is of "minor nature" and it does not call for major changes. "We need not worry about it (failure). GSLV can only evolve as a successful launcher".

    The Space Commission which reviewed the FAC report on May 24, asked ISRO to come up with specific proposals required for investment. GSAT-7 and INSAT-3D, scheduled to be launched by GSLV, would now be procured launches (from outside the country).

    The investment that is talked about is in regard to additional costs, if any, for procured launches besides GSAT-14, the payload for the next flight of GSLV, expected after March.
    "The idea is that in the next launch of GSLV, we do not want to put a costly, complex satellite," ISRO Chairman Radhakrishnan said.

    He also said that the GSAT-12 equipped wit 12 transponders in the Extended C-band, is planned to be launched in the second week of July.

    ISRO today started the process of switching on the payloads on board the GSAT-8 launched last month. Services from this satellite is expected to be available for users by the end of this month, Radhakrishnan said.

    No design deficiency in GSLV, says Failure Analysis Committee
     

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