Earth observation mission could not be accomplished due to 3rd stage pressure issue: ISRO chief
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Sriharikota (Andhra Pradesh) (PTI): ISRO's 101st mission from here, an earth observation satellite onboard the agency's trusted PSLV rocket, could not be accomplished on Sunday following a pressure issue in the third stage of the launch vehicle, the space agency said.
Although the Polar Satellite Launch Vehicle (PSLV) made a textbook lift-off at the prefixed time of 5.59 am, the mission objectives, however could not be achieved.
"Today we targeted the 101st launch from Sriharikota, the PSLV-C61 EOS-09 mission. The PSLV is a four-stage vehicle and up to the second stage, the performance was normal. The third stage motor started perfectly but during the functioning of the third stage we are seeing an observation and the mission could not be accomplished," Narayanan said.
The third stage is a solid motor system.
"...and the motor pressure--there was a fall in the chamber pressure of the motor case and the mission could not be accomplished. We are studying the entire performance, we shall come back at the earliest," Narayanan said post the unsuccessful launch.
EOS-09 is a repeat satellite similar to EOS-04 launched in 2022 that has been designed with the mission objective to ensure remote sensing data for the user community engaged in operational applications and to improve the frequency of observation.
The mission's payload, a Synthetic Aperture Radar (SAR) which is inside the satellite is capable of providing images for various earth observation applications under all-weather conditions, day and night.
This all-weather, round-the-clock imaging is vital for applications ranging from agriculture and forestry monitoring to disaster management, urban planning and national security.
The mission was aimed to be a debris-free one.
According to scientists, a sufficient amount of the fuel had been reserved for de-orbiting the satellite after its effective mission life by lowering it to an orbit that ensures its decay within two years, towards ensuring a debris-free mission.
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AAP leader says police booked him for protest for Wangchuk
New Delhi (PTI): AAP leader Saurabh Bharadwaj on Monday claimed that he was booked by police for taking out a candle march in support of climate activist Sonam Wangchuk.
The Delhi Aam Aadmi Party president said he was booked even though the case against Wangchuk had ended.
"This new case has been registered for a candle march is registered for a candle light March at Jantar Mantar on the day Wangchuk was arrested," he said, terming it a "fake" case.
The Delhi Police was yet to respond to the allegation.
Earlier in the day, the Supreme Court disposed of a plea by Wangchuk's wife against the detention of the activist under the National Security Act (NSA).
A bench of Justices Aravind Kumar and PB Varale noted that the Centre had revoked its order of Wangchuk's detention on March 14, and there was nothing left in the matter.
Wangchuk was detained on September 26 last year, two days after the protests over demands for statehood for Ladakh and its inclusion under the Sixth Schedule of the Constitution rocked Leh.
More than 45 people, including 22 policemen, were injured in the protests.
