GSAT-11 called back for tests to be on the safe side: ISRO Chairman
Chennai, April 25: The Indian space agency has recalled its communication satellite GSAT-11 from Arianespace's rocket port in French Guiana for further tests, to be on the safe side, said Indian Space Research Organisation (ISRO) chairman K. Sivan on Wednesday.
"We are bringing back the GSAT-11 satellite to carry out some tests to be doubly sure of its performance orbiting in the space. There is nothing more to it," Sivan told IANS.
He said the satellite is expected to be back in India on April 5 or 6, and after the tests and checks, GSAT-11 can be back in Ariancespace's rocket port in Kourou.
"Due to additional technical checks with the Indian Space Research Organisation's GSAT-11 satellite, to be conducted from the ISRO Satellite Centre (ISAC) located in Bengaluru, the Ariane 5 launch initially planned for May 25, VA243, has been postponed," Arianespace had said.
The GSAT-11 was planned to be launched mid May. The satellite had reached Arianespace's rocket port in March.
GSAT-11 was designed, assembled and integrated by the ISRO, and will have an estimated lift-off mass of 5,870 kg.
This advanced communications satellite is to provide multi-spot beam coverage over the Indian mainland and nearby islands, bringing significant advantages to the user community when compared with India's existing INSAT/GSAT satellite systems, Arianespace said earlier in a statement.
With its new system architecture and cutting-edge technology elements, GSAT-11 will generate a capacity of more than 12 Gbps for users from a single platform, the statement added.
The ISRO's move to call back GSAT-11 for further tests and be doubly sure of its performance may be due to the loss of the recently launched GSAT-6A satellite, soon after it was put into orbit on March 29.
ISRO suspects the failure of the power systems in the satellite for the loss of communication link.
"The satellites are powered by solar panels that charge the onboard batteries. The batteries are fully charged when the satellite is loaded on to the rocket.
"Even if there is a problem with the solar panel, then the battery power should have kicked in. Here the entire power system of the satellite seems to have failed," one space expert told IANS earlier.
According to experts, the power system could have failed due to some short circuiting or arcing resulting in what is known in the space terminology 'loss of lock' or loss of contact with the ground station.
Satellites in space are locked to ground stations for tracking and other purposes.
On March 29, Indian rocket Geosynchronous Satellite Launch Vehicle (GSLV) slung GSAT-6A in its intended orbit. From there the satellite was to be taken up further to its orbital slot by firing its onboard motors.
The first orbit raising operation was successfully carried out by firing the onboard motors for around 36 minutes on March 30 morning.
The second orbit raising operation of GSAT-6A satellite was also successful as its motors was fired for about 53 minutes on March 31.
After that, the communication link got snapped.
Industry experts also said there has been instances where communication link with satellites got reestablished after a break of couple of days.
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8 children between ages of 1 and 14 dead after mass shooting in Louisiana, police say
Shreveport(US) (AP): A gunman in Louisiana killed eight children in shootings at two different homes early Sunday in the nation's deadliest mass shooting in more than two years, police in Shreveport said.
The victims ranged in age from one to about 14 years old, said Shreveport police spokesperson Chris Bordelon. A total of 10 were shot and some of the children were related to the suspect, Bordelon said.
The gunman later died after a chase with officers who fired at the suspect, Bordelon said. The suspect stole a car while leaving the scene of the shootings and was followed by police, according to Bordelon.
Police did not release the name of the suspect but did say he was an adult male. The shootings were the result of a “domestic disturbance,” Bordelon said.
Officials said they were still gathering details at the crime scenes south of downtown Shreveport — the two homes and a third location.
“This is an extensive scene unlike anything most of us have ever seen,” he said.
It was the deadliest mass shooting in the US since eight people were killed in a Chicago suburb in January 2024, according to a database maintained by The Associated Press and USA Today in partnership with Northeastern University.
At a news conference outside the residence where one of the shootings occurred, officials appeared stunned, requesting patience and prayers from the community as they sorted through multiple crime scenes.
“I just don't know what to say, my heart is just taken aback,” Shreveport Police Chief Wayne Smith said. “I cannot begin to imagine how such an event could occur.”
“This is a tragic situation — maybe the worst tragic situation we've ever had,” said Tom Arceneaux, mayor of the city in northwestern Louisiana with about 180,000 residents. “It's a terrible morning.”
Louisiana State Police say their detectives have been asked by Shreveport police to investigate. In a statement, state police say no officers were harmed in the shooting that involved an officer after a police pursuit into Bossier City on Sunday morning.
State police are asking anyone with pictures, video or information to share it with state police detectives.
Louisiana Gov Jeff Landry said in a statement that he and his wife were heartbroken. “We're deeply grateful to the law enforcement officers and first responders working tirelessly on the scene,” he added.
