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GSLV launch put off due to fuel leak

GSLV launch put off due  to fuel leak
Highlights

Delaying India's entry into a select group of nations with cryogenic engine technology, the Indian space agency Monday had to call off the launch of its heavy rocket, the geosynchronous satellite launch vehicle (GSLV-D5), after a fuel leak was detected. ISRO Chairman K Radhakrishnan said: "The countdown for the rocket launch was progressing well. (But) Two hours before the scheduled launch time, we observed a leak in the fuel system of the second-stage engine."

Sriharikota (IANS): Delaying India's entry into a select group of nations with cryogenic engine technology, the Indian space agency Monday had to call off the launch of its heavy rocket, the geosynchronous satellite launch vehicle (GSLV-D5), after a fuel leak was detected. ISRO Chairman K Radhakrishnan said: "The countdown for the rocket launch was progressing well. (But) Two hours before the scheduled launch time, we observed a leak in the fuel system of the second-stage engine."
"Because of that, we are calling off the launch. The liquid fuel in the second stage and the four strap-on motors of the first stage and the cryogenic engine will be drained," he told media at the Satish Dhawan Space Centre here. He said the revised launch date will be announced after the leak assessment.
  • Officials detected leak in the fuel system of the second-stage engine
  • Revised launch date to be announced after the leak assessment
  • Fuel leak was also visible on television screen at the launch centre
“Small groups of scientists gathered around some monitors. The countdown was put on hold for some time and an
emergency meeting was called where a decision was taken to hold the launch”
Sriharikota (IANS): The Indian space agency on Monday called off the launch of its heavy rocket, the geosynchronous satellite launch vehicle (GSLV-D5), due to a leak in the second-stage engine, said a top official. Announcing this to the media, Indian Space Research Organisation (ISRO) chairman K. Radhakrishnan said: "The countdown for the rocket launch was progressing well. Two hours before the scheduled launch time, we observed a leak in the fuel system of the second-stage engine."
"Because of that, we are calling off the launch. The liquid fuel in the second stage and the four strap-on motors of the first stage and the cryogenic engine will be drained," he said. According to him, the rocket, which cost Rs.160 crore, will then be moved to the rocket assembly building to make an assessment of the leak's cause and the action that needs to be taken. The satellite costs Rs.45 crore. He said the revised launch date will be announced after the leak assessment.
The notable aspect of the rocket is that its cryogenic engine was developed by ISRO. Nearly two hours before the scheduled blast off (4.50 pm) while the cryogenic engine was being fuelled up, scientists and officials at the mission control centre got suddenly excited and were huddled in a serious discussion. Small groups of scientists gathered around some monitors. The countdown was put on hold for some time and an emergency meeting was called where a decision was taken to hold the launch.
The fuel leak was also visible on the television screen at the launch centre.The GSLV's success-failure ratio is skewed towards the latter. Out of the seven GSLV rockets that soared into the skies till date, four have turned out to be failures for ISRO. While two missions were successful, one is considered as partial success as the rocket under-performed. The two successful launches were in 2003 and 2004 when the rocket launched GSAT-2 and Edusat, an educational satellite. The rocket's maiden flight in 2001 was a failure as it was not able to sling GSAT-1 into its intended orbit. The 2006 mission was sort of an historic flight for a dubious reason. For the first time, ISRO destroyed the rocket mid-air soon after the take-off as it started backing up.

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