Gearing up for Gaganyaan mission test: How ISRO will save the astronauts | Tech News

Gearing up for Gaganyaan mission test: How ISRO will save the astronauts

ISRO aims to enhance Gaganyaan mission safety with tests on crew module stability after splashdown. New measures address challenges revealed in recent TV-D1 mission.

| Updated on: Nov 13 2023, 15:17 IST
NISAR mission: Know all about NASA and ISRO’s satellite mission
1/5 The Indian Space Research Organisation (ISRO) has another major mission lined up called NISAR or  NASA-ISRO Synthetic Aperture Radar mission which will be conducted in collaboration with NASA. The mission aims to study climate change and the impact of natural disasters.  (NASA/JPL)
2/5 The NISAR mission will be studying Earth's global carbon cycle and climate change with the help of two radar frequencies, L-band and S-band. The satellite will conduct an in-depth study on natural disasters and how they impact the environment as well as the Earth's surface. It will collect the smallest measurements and details about our climate. (NASA/JPL)
3/5 The NISAR mission will also be studying the forest and wetland ecosystems from where the majority of greenhouse gases are produced. Studying their impact will enable scientists and policymakers to take corrective actions. (NASA/JPL)
4/5 According to NASA, the mission will be equipped with an L-band synthetic aperture radar, a high-speed data communication system, GPS receivers, a solid-state recorder, and a payload data subsystem provided by NASA. ISRO is responsible for providing the spacecraft bus, the S-band radar, the launch vehicle and all the required launch services. (Pixabay)
5/5 As per reports, NISAR in every 12-days will conduct a scan on Earth’s land and ice surfaces which will help researchers to study the absorption and release of carbon gases. The overall scientific data will help prepare countries to combat natural disasters or reduce their impact. (Pixabay)
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ISRO plans tests in 2024 to ensure Gaganyaan crew module stability after splashdown. (PTI)

In an effort to enhance the safety of the astronauts in its upcoming Gaganyaan mission, the Indian Space Research Organisation (ISRO) is set to conduct crucial test on the crew module's stability during splashdown in the sea. The decision comes in the wake of an incident during the TV-D1 mission on October 21 this year when the crew module, intended for ISRO's inaugural human spaceflight, experienced an unexpected upended orientation during recovery in the Bay of Bengal.

Uprighting System

To address this challenge, ISRO is gearing up for the second test mission (TV-D2) scheduled for the next year, preceding the comprehensive unmanned test flight into space for the crew module, utilising the LVM3 rocket as part of the Gaganyaan mission. S Shivakumar, the director of the TV-D1 mission, revealed that one of the critical systems to be tested is an "uprighting system" designed to prevent the crew module from overturning after splashdown, The Indian Express reported.

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Explaining the mechanism, Shivakumar likened it to gaseous balloons or airbags in cars. In the event of the crew module tilting, this system would deploy, restoring the module to an upright position. The TV-D1 mission uncovered challenges related to stability, particularly in the presence of lateral winds and sea wave disturbances, prompting the need for such a corrective system.

Ensuring Redundancy for Mission Success

Moreover, the crew module will feature redundancy systems to ensure the functionality of the primary uprighting system. Shivakumar emphasised the importance of recovery aids, such as beacons, working effectively underwater and the successful ejection of sea water dye to mark the landing region.

Upcoming Test Vehicle Mission

The next test vehicle mission, scheduled for the first quarter of the coming year, will simulate various conditions, including crew seat systems, suspension systems, and the performance of the uprighting system. Notably, the crew escape system will incorporate both low and high altitude escape motors, distinguishing it from the TV-D1 mission.

While the TV-D1 mission was marked a success, Shivakumar highlighted the significance of the upcoming TV-D2 mission, where a crew module more closely resembling the final design will be tested. The focus will be on simulating critical elements such as crew seats, control systems, and floatation systems, marking a crucial step forward in ISRO's preparations for the historic Gaganyaan mission.

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First Published Date: 13 Nov, 14:35 IST