Science & Tech

ISRO Completes Gaganyaan Module Separation Tests in Thiruvananthapuram

Liam O'Brien
By Liam O'Brien
Oct 20, 2026 • 2 min read
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In brief

The Indian Space Research Organisation (ISRO) conducted successful Crew Module and Service Module separation tests at the Vikram Sarabhai Space Centre in Thiruvananthapuram. The tests confirmed the design capabilities of the system for the Gaganyaan human spaceflight program, which aims for its first uncrewed mission in 2026.

ISRO Completes Gaganyaan Module Separation Tests in Thiruvananthapuram
Thiruvananthapuram, IndiaSource: Ahimsa.tv

The Indian Space Research Organisation (ISRO) has successfully completed a series of tests validating the separation system of the Crew Module (CM) and Service Module (SM) for its Gaganyaan human spaceflight program. Conducted at the Vikram Sarabhai Space Centre (VSSC) in Thiruvananthapuram, these tests confirm the design capabilities of the separation system, a critical component for upcoming missions. The Gaganyaan program aims to send Indian astronauts to space, with the first uncrewed flight, G1, expected to launch in 2026. Historically, the Gaganyaan mission represents a significant step for India in human space exploration. The project began with the goal of launching a crewed spacecraft using the Human-Rated LVM3 rocket.

The Crew Module and Service Module are designed to operate as a single unit during the orbital phase before the CM separates to return to Earth. The separation system ensures that essential connections, such as power and fluid supplies, are disengaged in a predetermined sequence during re-entry. During the separation tests, ISRO examined the structural integrity and shock resistance of several critical systems within the Crew Module. This included the avionics and inertial navigation systems, as well as the thermal protection system integrated within the heat shield.

The testing also encompassed the Crew Module Deployable Umbilical Shield and pyrotechnic devices associated with the module's uprighting and thermal control systems, ensuring all components performed reliably under stress. The broader implications of these successful tests extend into various domains, including technology, education, and national pride. The Gaganyaan mission not only aims to advance India's capabilities in space exploration but also serves as an inspiration for future generations interested in science and engineering. Additionally, the mission is expected to contribute to advancements in satellite technology and other aerospace sectors.

Looking ahead, ISRO plans to continue with the next phases of the Gaganyaan mission, which include two uncrewed test flights and the eventual launch of a crewed mission. The success of the recent tests strengthens the foundation for these future missions and highlights India's growing capabilities in human spaceflight, positioning the country as a significant player in the global space exploration arena.

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Liam O'Brien
Written by
Liam O'Brien
Environment Writer

Liam covers climate solutions and the people helping the planet heal.

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