Gaganyaan Mission : ISRO to send Indian into space by 2022

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Gaganyaan: Astronauts prepare to start training, ISRO for mission

By Chethan Kumar | TNN | Aug 26, 2021, 08:34 IST

BENGALURU: The four astronaut-elects part of the Gaganyaan program have begun the debriefing process — about their training in Russia — and are gearing up to start the India leg of their training, even as ISRO reviews its preparedness, including the human rating of systems and the launch vehicle.

The four men, all test pilots with the Indian Air Force (IAF) returned from Russia, where they underwent basic astronaut training for a little more than a year, had returned to India earlier this year.
While they’ve been based in Bengaluru since their return, they will be required to go to some of the other Indian cities for their training here.

ISRO chairman K Sivan said: “The training is expected to begin in the first week of September. At present the astronauts have begun the process of debriefing. There will be multiple sessions of this before they begin their training.”

As reported by TOI earlier, the National Medical Advisory Council, constituted specifically for the program, has already laid out the protocol to be followed for astronaut training given the pandemic situation.

As part of the first leg of India training the four men will return to their alma mater (IAF) for a two-week flight training, following which they would begin their academic or theory courses. Fitness and other related activities will be a continuous process through their training.

Other Preparations

While the astronaut-elects prepare to begin their training, a long schedule for which is being worked out up to the time of the launch, ISRO is working on putting in place everything else needed for the mission.

While work on human rating of systems, including the launch vehicle (GSLV-Mk3) is progressing as per schedule — revised after the pandemic affected the functioning of ISRO and its vendors — preparations for the launch of two relay satellites, the un-crewed mission etc. are gaining pace.

“If the FAC (failure analysis committee) looking into the GSLV-Mk2 failure from earlier this month concludes that there are some process issues with the cryogenic stage, we may need to revisit some aspects of the Mk3, but that should not affect the program significantly,” a senior scientist said.

Aside from that, work has also begun on the two relay satellites that ISRO will need to launch to be able to track the crew module throughout its orbit in space — it will also be using at least 40 ground stations to track the module.

The first un-crewed mission, as reported by TOI earlier, is now scheduled for mid-2022, following which decisions will be made on how many more such missions may be required before actually launching humans to space. This will, in turn, determine when the human mission could be carried out.

Gaganyaan: Astronauts prepare to start training, Isro for mission - Times of India
 

Gautam

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E94GvwvVgAMNgKm.jpg

Successful hot Test of Gaganyaan Service Module Propulsion System – System Demonstration Model (SDM)​


On August 28, 2021, ISRO successfully conducted the first hot test of the System Demonstration Model (SDM) of the Gaganyaan Service Module Propulsion System for a duration of 450 s at the test facility of ISRO Propulsion Complex (IPRC), Mahendragiri, Tamil Nadu. The system performance met the test objectives and there was a close match with the pre-test predictions. Further, a series of hot tests are planned to simulate various mission conditions as well as off-nominal conditions.

The Service Module is part of the Gaganyaan Orbital module and is located below the crew module and remains connected to it until re-entry. The Service Module (SM) Propulsion System consists of a unified bipropellant system consisting of 5 nos. of 440 N thrust engines and 16 nos. of 100 N Reaction Control system (RCS) thrusters with MON-3 and MMH as Oxidizer and Fuel respectively. The System Demonstration Model (SDM), consisting of 5 nos. of 440 N engines and 8 nos. of 100 N thrusters, was realized to qualify the propulsion system performance in ground. A new test facility is established at IPRC, Mahendragiri for testing the SDM.
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System Demonstration Model (SDM)

sdm_2.jpg

System Demonstration Model (SDM) at test bed
 

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View attachment 20696

Successful hot Test of Gaganyaan Service Module Propulsion System – System Demonstration Model (SDM)​


On August 28, 2021, ISRO successfully conducted the first hot test of the System Demonstration Model (SDM) of the Gaganyaan Service Module Propulsion System for a duration of 450 s at the test facility of ISRO Propulsion Complex (IPRC), Mahendragiri, Tamil Nadu. The system performance met the test objectives and there was a close match with the pre-test predictions. Further, a series of hot tests are planned to simulate various mission conditions as well as off-nominal conditions.

The Service Module is part of the Gaganyaan Orbital module and is located below the crew module and remains connected to it until re-entry. The Service Module (SM) Propulsion System consists of a unified bipropellant system consisting of 5 nos. of 440 N thrust engines and 16 nos. of 100 N Reaction Control system (RCS) thrusters with MON-3 and MMH as Oxidizer and Fuel respectively. The System Demonstration Model (SDM), consisting of 5 nos. of 440 N engines and 8 nos. of 100 N thrusters, was realized to qualify the propulsion system performance in ground. A new test facility is established at IPRC, Mahendragiri for testing the SDM.
View attachment 20695
System Demonstration Model (SDM)

View attachment 20694
System Demonstration Model (SDM) at test bed
Awesome news (y) Kudos to ISRO,


5 nos. of 440 N thrust engines and 16 nos. of 100 N Reaction Control system (RCS) thrusters. Maybe these thrusters will be connected to the crew module during the re-entry to make the re-entry slower by burning these engines to reduce the speed.
 
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Gautam

Team StratFront
Feb 16, 2019
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Tripura, NE, India
Australia to support ISRO in tracking Gaganyaan mission

ISRO chief K Sivan had said the space agency is also in talks with the Australian counterpart to have a ground station at the Cocos Keeling islands for the Gaganyaan mission.

Press Trust of India
New Delhi
September 15, 2021UPDATED: September 15, 2021 09:46 IST
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Australia will support India's Gaganyaan mission by tracking it through Cocos Keeling island, Deputy Head Australia Space Agency Anthony Murfett said on Monday.

Speaking at the International Space Conference organised by the Confederation of Indian Industry (CII), Murfett said the space cooperation between the two countries is on an upswing and the space agencies of India and Australia have recently updated their Memorandum of Understanding.

"We are going to be supporting this Gaganyaan mission by tracking through Australia's territory on the Cocos Keeling islands," he said.

Earlier this year, ISRO chief K Sivan had said the space agency is also in talks with the Australian counterpart to have a ground station at the Cocos Keeling islands for the Gaganyaan mission.

Satellites in orbit cannot pass along their information to the ground stations on Earth if it does not have a clear view of the ground station. A data relay satellite serves as a way to pass along the satellite's information.

There are blind spots due to which there is a possibility of not receiving signals, sources said. The data relay satellite tracking from Cocos Keeling island is expected to help address the issue.

Australia to support Isro in tracking Gaganyaan mission