ISRO successfully conducts hot tests of Gaganyaan propulsion system
Bengaluru (PTI): ISRO has successfully conducted two hot tests of the Gaganyaan Service Module Propulsion System (SMPS) at the space agency's Propulsion Complex in Mahendragiri on July 3.
The short-duration tests, lasting 30 seconds and 100 seconds respectively, were aimed at validating the test article configuration, ISRO said in a statement on Wednesday.
"The overall performance of the propulsion system during these hot tests was normal as per pre-test predictions. During the 100s test, simultaneous operation of all Reaction Control System (RCS) thrusters in different modes (steady state; pulsed) along with all Liquid Apogee Motor (LAM) engines was also successfully demonstrated.
"ISRO's Liquid Propulsion System Centre (LPSC) is leading the technology development activities for the Gaganyaan SMPS. SMPS is a critical system of Gaganyaan Orbital Module and is required during orbital manoeuvring as well as specific abort scenarios," the space agency said.
It comprises five Liquid Apogee Motor (LAM) engines (each 440N thrust) and 16 Reaction Control System (RCS) thrusters (each 100N thrust). In order to simulate the propulsion system conditions closer to flight, the SMPS test article for these hot tests incorporated improvements based on experience gained from earlier hot tests.
"With the confidence gained through these hot tests, ISRO will conduct a full duration hot test shortly," the statement said.
According to ISRO, the Gaganyaan programme aims to demonstrate India’s capability to launch a crewed spacecraft into low Earth orbit, and the experience and knowledge gained from this mission will be crucial for its success.
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TMC leader killed in Bengal's Birbhum
Kolkata (PTI): A local Trinamool Congress (TMC) leader was murdered by unidentified assailants in West Bengal's Birbhum district, police said on Saturday.
Rajbehari Sardar (65), TMC's booth chief in Patisara gram panchayat, was stabbed and severely beaten up by around five-six people at a function in Nanoor area around 10 pm on Friday, a police officer said.
Sardar was taken to Mangalkot Hospital in neighbouring Purba Bardhaman district where he was declared dead by doctors, he said.
The deceased's son alleged that Sardar was killed by members of a rival faction of the party.
The local TMC leadership said Sardar was a committed party worker and was popular in the area, but claimed that there was no report of the involvement of anyone from the party in the murder.
"We demand a thorough and prompt investigation into the incident," a local TMC leader said.
