ISRO has successfully hot-tested Gaganyaan’s service module propulsion system-Technology News, Firstpost

tech2 news staffSeptember 1, 2021 11:06:42 IST

The Indian Space Research Organization recently conducted a hot test of the GAGANYAAN Service Module (SM) propulsion system on August 28.

This is the first hot test of the System Demonstration Model (SDM) of the Gaganyaan SM propulsion system and is different from the hot test performed on the Vikas engine.

The test was conducted for 450 seconds at the ISRO Propulsion Complex (IPRC) in Mahendragiri, Tamil Nadu.

According to an ISRO statement, the performance of the system met the purpose of the test and was in close agreement with the pre-test predictions.

Perform a series of hot tests to simulate different mission and non-nominal conditions.

The service module is part of the Gaganyaan Orbital module, underneath the crew module and remains connected until re-entry.

On August 28, 2021, ISRO successfully conducted the first hot test of the System Demonstration Model (SDM) of the Gaganyaan Service Module Propulsion System at the ISRO Propulsion Complex (IPRC) test facility in Mahendragiri, Tamil Nadu. .. https://t.co/7XstXIkJjB pic.twitter.com/gCZyNGoIoO

— ISRO (@isro) August 28, 2021

The SM propellant system consists of an integrated dual propellant system consisting of five numbers. A 440N thrust engine and a 100N reaction control system (RCS) thruster with 16 oxidizers and MMH as fuel, respectively. System Demonstration Model (SDM), consisting of 5 numbers. Of a 440N engine and eight 100N thrusters.

Astronaut GAGANYAAN returns to Russia

The purpose of the Gaganyaan program is to demonstrate the ability to send humans back to Earth in low earth orbit onboard Indian rockets.

Four Indian Air Force (IAF) pilots have been selected to participate in this manned space flight. They were trained for a year by the Russian space agency Roscosmos in the city of Zviozdonigorodok, Russia, near Moscow.

According to PTI, an astronaut training contract was signed in June 2019 between ISRO and Russian launch service provider Glavkosmos.

Training began on February 10, 2020, but was temporarily suspended due to the COVID-19 pandemic. They finished their training and returned to India sometime in March.

There are only three astronauts, called Gaganaut in India, but four men are trained to back them up in case of an emergency.

According to IAF sources, the four IAF pilots include a group captain and three wing commanders.

According to a recent report, Gaganote needs to return to Russia for additional training, as well as to put on a spacesuit.

“We also expect astronauts to return to Russia for a very special mission. Spacesuits are sewn in Russia and will come here in Moscow to make adjustment measurements. “The Hindu Ambassador to Russia, DB Venkatesh Varma, said. ..

Spacesuits are made by Russian R & D and production company Zvezda under the contract of Glavkosmos (a subsidiary of Roscosmos) with ISRO’s Manned Space Flight Center (HSC).

Gaganauts training

During the time spent in Russia, IAF pilots learned Russian and received general space and system training for the Soyuz MS crew spacecraft.

According to Hindus, they also learned the crew’s behavior in the case of anomalous descent module landings in forests and wetlands in winter-completed in February 2020 and on the surface in June 2020. In the grasslands in the summer-completed in July 2020.

They were also trained in preparing to maintain spaceflight factors such as g-force, hypoxia, and pressure drop, according to Roscosmos.

After a one-year session in Russia, ISRO staff were trained in module-specific training, crew and service modules designed by ISRO, and learned to operate, avoid, and simulate.

Private companies building PSLV

ISRO’s PSLV is often referred to as the institution’s “hard worker” because it is constantly used to launch various satellites into low earth orbit (LEO).

According to news reports, private companies are considering building a Polar Satellite Launch Vehicle (PSLV) from end to end. This is the first time a company other than an ISRO-led company has done so.

Five companies were interested, but only three have submitted bids yet. They include two consortia, each led by Adani and L & T, and one separate company.

After discussing with multiple sources, TOI said it had a contract to manufacture five rockets, and these three companies submitted bids in response to a request for proposal (RFP) issued by New Space India Limited (NSIL). I reported.

The contract will be announced by the end of the year.

NSIL is ISRO’s commercial division, and in March this year, Chairman and Managing Director G Narayanan identified an Indian industry partner (potentially a consortium of companies or a company) to undertake end-to-end. He told PTI that he was in the process. Production of PSLV.

“This complex process will be completed in about 6-8 months. Once the Indian industry partners are identified, we can provide a fully built PSLV in about 2-3 years with the right hands. I’m sure, from the SRO, “he said.

As part of this business initiative, NSIL has proposed to achieve five PSLVs through identified Indian industry partners.

“Currently, about 80% of PSLV’s mechanical systems and 60% of electronic systems are from the industry, but the remaining percentages in both areas are very complex,” he said.

NSIL launched its first commercial mission on February 28th. This was the launch of the Brazilian satellite Amazonia-1 from Sriharikota.