Screaming Skull
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CHENNAI: It was brilliant spectacle in the eastern horizon as the PSLV-C12 rose from the spaceport at Sriharikota at the appointed time of 6.45 a.m. on Monday. As the four-stage rocket sped up in a straight path with the early morning sun behind it, a fabulous-looking shadow of the rocket’s smoke trail painted itself in the sky.
It was a wonderful sight again, in the backdrop of a clear sky, to see the vehicle’s first stage discard itself and the rocket majestically continuing its journey into space.
PROUD MOMENT: VSSC Director K. Radhakrishnan; ISRO Chairman G. Madhavan Nair; Director of ISRO Satellite Centre T.K.Alex; and Vice Chancellor of Anna University P. Mannar Jawahar display models of PSLV-C12, RISAT-2 and Anusat at Sriharikota on Monday.
At the end of about 18 minutes of flight, the fourth stage injected RISAT-2 at a velocity of 26,000 km an hour into orbit at an altitude of 550 km. About a minute later, the 38-kg Anusat was in orbit.
This was the 14th successful flight in a row for the PSLV.
ISRO Chairman Madhavan Nair called it a “precise” mission with “no deviation whatsoever in the flight parameters.” He described the launch as “more thrilling than a cricket match” because during the countdown, “we put up boundaries and [delivered] googlies and finally achieved it.”
He was referring to a “drama” on Sunday afternoon when an umbilical cord detached itself from the rocket and fell on the connectors, disrupting the filling of the fuel in the rocket. Six hours of the 48-hour countdown were lost.
“In that condition, we could not have run the launch,” he said. However, the ISRO’s crisis managers rose to the occasion and “without even having a cup of tea, made everything all right, and the result is we have gone on the dot,” he said at a press conference after the launch of the satellites.
Mr. Nair said it would be “a season of fireworks” this year at Sriharikota with a series of “major missions” lined up by the ISRO. By June end, a PSLV will put in orbit ISRO’s Oceansat-2. Another PSLV will deploy in orbit Resourcesat-2. A Geo-Synchronous Satellite Launch Vehicle, with an indigenous cryogenic stage, would also lift off from Sriharikota. The indigenous Radar Imaging Satellite RISAT-1 too may go up by this year-end.
Asked at what cost the RISAT-2 was bought from Israel, Mr. Nair said, “We had cooperation with the Israel Aerospace Industries” in building the RISAT-2. He, however, declined to reveal its commercial aspects.
The RISAT-2 had a micro-wave radar imaging configuration. Till now, the ISRO’s earth observation satellites operated in the visible and infra-red region. For the first time, the ISRO would have a satellite operating in the micro-wave band. It could precisely take images of objects on the ground. It would be an asset to the country, he asserted. Only Japan, the European Space Agency, Canada and Israel could build radar imaging satellites.
R.R. Navalgund, Director, Space Applications Centre, Ahmedabad, said a radar imaging satellite in the micro-wave region operating in the X or C or L band facilitated better disaster management, as it had enhanced capability to discriminate ground features and had higher frequency of visits.
A lot of data could be stored in Anusat built by Anna University, its Vice-Chancellor Dr. P. Mannar Jawahar said.
It had the capability to relay messages from one station to another in digital format, said Mr. Nair.
While George Koshy was the Mission Director of the PSLV-12, C. Venugopal was the Vehicle Director. R.N. Tyagi was the Satellite Director for the RISAT-2 and K.S.V. Seshadri the Project Director of Anusat.
Manned missions
About the ISRO’s plans to send an Indian into space, K. Radhakrishnan, Director, Vikram Sarabhai Space Centre, Thiruvananthapuram, said the mission had four major elements: setting up facilities to train astronauts, building a new launch pad at Sriharikota and establishing facilities to enable the crew to get into the vehicle and a mission control centre to communicate with the astronauts all through the mission.
A GSLV would put the module carrying two Indian astronauts into space. They would stay in space for seven days. The module would orbit at an altitude of 400 km to 700 km.
Dr. Radhakrishnan said, “We need to develop crew modules. We need to have developmental flights. We need to test the vehicle without humans first. All these require the development of critical technologies.”
Another important issue related to re-entry technology. The Space Capsule Recovery Experiment (SRE-1) in January 2007 was a major input for this technology. The ISRO aimed to put Indian astronauts in space in seven years from now. The project would cost Rs.12, 400 crores.
Chandrayaan-1 completed six months in orbit on Sunday, said S.K. Shivakumar, Director, ISRO Telemetry, Tracking and Command Network (ISTRAC), Bangalore. The spacecraft was doing well. “We are doing manoeuvres with it every month,” he added.
N. Narayana Moorthy, Project Director, GSLV Mark III, said the ground testing of the new vehicle’s major propulsion systems would be done at Sriharikota in August. “All facilities are ready. The hardware is ready.”
The first cryogenic engine for the vehicle would be ready for testing by this year-end. The GSLV Mark III would lift off in 2011.
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