Chandrayaan 1, India's First Lunar Probe |
Chandrayaan 1, India's First Lunar Probe |
May 1 2006, 04:23 PM
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Senior Member Group: Members Posts: 2454 Joined: 8-July 05 From: NGC 5907 Member No.: 430 |
Chandrayaan Lunar Mission Will Carry NASA Payload
http://www.spacedaily.com/reports/Chandray...SA_Payload.html Bangalore, India (SPX) May 1, 2006 - ISRO has agreed to carry two NASA research instruments aboard its Chandrayaan-1 spacecraft, the Indian lunar-orbiting mission planned for launch next year, The Hindu newspaper reported Sunday. ISRO Pushing For Indian Satellite Industry http://www.spacedaily.com/reports/ISRO_Pus...e_Industry.html Bangalore, India (SPX) May 1, 2006 - ISRO is looking to jump-start an Indian satellite industry by inviting prospective domestic contractors to work with the agency until they can develop independent manufacturing capabilities. -------------------- "After having some business dealings with men, I am occasionally chagrined,
and feel as if I had done some wrong, and it is hard to forget the ugly circumstance. I see that such intercourse long continued would make one thoroughly prosaic, hard, and coarse. But the longest intercourse with Nature, though in her rudest moods, does not thus harden and make coarse. A hard, sensible man whom we liken to a rock is indeed much harder than a rock. From hard, coarse, insensible men with whom I have no sympathy, I go to commune with the rocks, whose hearts are comparatively soft." - Henry David Thoreau, November 15, 1853 |
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Oct 22 2008, 03:45 AM
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Junior Member Group: Members Posts: 75 Joined: 19-October 08 From: India Member No.: 4459 |
After launch, action shifts to Bangalore centre
Once the launch is done at Sriharikota, Peenya in Bangalore will take over Chandrayaan-I — the spacecraft and mission. Hectic activity is on at the ISRO Telemetry, Tracking and Command Network (Istrac) at Peenya, which will be the country's nerve-centre for tracking and controlling Chandrayaan-I for the next two years. Peenya will receive the first signals from the spacecraft 17 minutes after take-off, when the fourth stage of the rocket separates and injects the spacecraft into Earth's orbit. From the 17th minute to the very last day of the spacecraft's life — two years from now — ISTRAC will be in command. The Deep Space Network (DSN) at Byalalu will join ISTRAC in tracking the spacecraft six hours after take-off. Both DSN and ISTRAC will act as back-up stations for each other, with ISTRAC concentrating on the data flow from the spacecraft, and DSN helping in reception of the radio signals owing to its powerful 32-metre antenna. But ISTRAC will be the primary agency tracking the craft. The control centre at ISTRAC has about 350 people monitoring the health of Indian satellites. While there are groups designated for specific satellites, any member from any group could be called upon to help with Chandrayaan. On Tuesday, engineers at ISTRAC were busy running last-minute checks on simulators, communication links, quality of links, verifying operations of systems and testing for 100% accuracy in reception, flow and expression of data. ISTRAC deputy director Chiranjeevi said, "There is work every two-three seconds. We have to ensure that all systems are working to perfection." Chiranjeevi said ISTRAC would receive the first signals from the spacecraft in the form of engineering units — data on computers. "There will be hundreds of such units flowing in. We will check the units for voltage on the craft, temperature, power, battery strength, orbit determination and orientation, fuel and general health of the spacecraft." He said engineers will work in shifts to monitor Chandrayaan every minute for the next two years. "They sit in front of the computers and look at data flow based on which control commands are operated. But there are 2,000 parameters to check on and it would be humanly impossible to get engineers to monitor every one of them. So we have automatic software systems in place that will immediately alert us to any change in operations and sequence," Chiranjeevi explained. "We can't get anything wrong. We have been maintaining satellites for the last 20 years and it would be the same with Chandrayaan," he added. |
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