Showing posts with label indian space program. Show all posts
Showing posts with label indian space program. Show all posts

Wednesday, 7 May 2014

Nasa Web After 10 Yers In Orbit Insat 3E Expires

Nasa Web After 10 Yers In Orbit Insat 3E Expires
"NASA WEB-AFTER 10 YERS IN ORBIT,INSAT-3E EXPIRES"

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Communications satellite INSAT-3E has completed its life and gone out of service. Built to last 15 years, it has completed ten-and-a-half years in orbit. The third-generation satellite was launched in September 2003 with 36 transponders - 24 C-band and 12 extended C-band transponders - but only 25 of them have been working since 2009. K. Radhakrishnan, Chairman of the Indian Space Research Organisation, which builds and operates Indian satellites, told The Hindu, "The satellite has been decommissioned."

A few days ago, it ran out of the on-board oxidiser, which, along with fuel, keeps it Earth-locked (or fixed over India) and runs its daily functions. The ISRO had apparently expected that the satellite, positioned at 55 degrees E longitude, would last a few more months and that it would be smoothly replaced with GSAT-16.

Now the space agency is getting set to launch IRNSS-1B, second of its seven regional navigation satellites, on April 4.

Dr. Radhakrishnan said, "We started shifting users of INSAT-3E on to standby capacities on some of our other satellites. The migration process began on March 22 and is going on." The spare capacity includes the three-month-old GSAT-14.

INSAT-3E's 10 extended C-band transponders supported VSAT operators; its C-band supported BSNL and captive communication networks of the National Thermal Power Corporation and the Oil and Natural Gas Corporation, among others.

The ISRO is now left with 189 transponders on its INSAT/GSAT fleet and 91 additional transponders leased on foreign satellites. Dr. Radhakrishnan said, "No one is suffering for want of capacity."

INSAT-3E had briefly blinked and disrupted services for almost a day in September 2012 and was restored.

Meanwhile, the Master Control Facility at Hassan is due to move the expired satellite into a higher 'graveyard' orbit and keep it out of the way of many working spacecraft of other countries.

Credit: thehindu.com


Monday, 19 August 2013

Us Government Shutdown May Force Isro To Delay Mars Mission Launch By 2 Years

Us Government Shutdown May Force Isro To Delay Mars Mission Launch By 2 Years
Since the US government collapse has inconvenienced millions of Americans, it's moreover traumatic ISRO scientists energetic on India's motivated space programme to Mars. The Rs 450 crore (US69 million) Mars Orbiter Post (MOM), out of action for lift-off at 4.15pm on October 28, may well be imperfect NASA's be aware of and navigation defend. US space agency NASA has asked 97% of its 18,000-strong workers to go on awaited leave. This has absent visit of its stations large-scale unmanned. The ISRO payment is banking on such stations to be a result the spacecraft. If the programme misses the October 28-November 19 enliven sheet, India may have available to ground the payment for at least two living.

NASA had all right to hoard reimbursable be aware of and navigation defend to Indian Look Research Organisation for MOM finished the enliven and post-launch phases later the spacecraft is out of space area of its navigation system.

NASA was to value in end determination/ reconfirmation of turn around and unbending of spacecraft. "NASA is in recent times blocked due to a go by in government endowment. I am in furlough status; suitably, I am ineffective to retort to your report at this time," was the auto-reply from NASA spokesperson to Era of India (TOI) queries on this substance. Continue month, he had told TOI about NASA defend to MOM.

An ISRO spokesperson said: "It is too beforehand to insult about this." NASA defend force consequences ISRO about Rs 70 crore.

Sources in ISRO explained that the enliven sheet is pitch as Mars and Earth force not be in positions strong for such a programme sterile the end of 2015 or launch of 2016. Prof UR Rao, chairman of the national commission of experts which cleared the project, declined to insult, verbalize it's a "supporter" substance.

But he said: "The enliven sheet is elder. We're difficult to enliven the spacecraft in the launch of the sheet. If not November 19, we have available time sterile beforehand December. But later that is lost, we'll have available to perform for two living."

He believed commonly, Isro avoids introduction from Sriharikota finished October and November. "It is thereabouts avoided as it is hurricane embellish. But perfect the fact that such an odds force not be about for living if missed, we out of action the enliven and are hopeful that weather does not act out misery."

The spacecraft which absent Bangalore on Wednesday, reached enliven site Sriharikota on Thursday evening. In components of the enliven mechanism PSLV C 25 beforehand at the enliven site, association of the spacecraft force set up on October 10.

Credit: timesofindia.indiatimes.com