ISRO Announces Two-Phase Launch for Chandrayaan-4 with In-Space Assembly

ISRO Announces Two-Phase Launch for Chandrayaan-4 with In-Space Assembly: The Indian Space Research Organisation (ISRO) is gearing up for its ambitious Chandrayaan-4 mission, aiming to bring back samples from the Moon. Unlike previous missions, Chandrayaan-4 will involve the most powerful rocket system India has ever used and will feature multiple launches with modules assembled in space. This innovative approach presents unique challenges and promises to set new precedents in space exploration.

ISRO Announces Two-Phase Launch for Chandrayaan-4; A Technical Marvel on Its Own

• Chandrayaan-4 will be launched in multiple parts and assembled in space before heading to the Moon.
• This approach is necessary because the spacecraft’s size exceeds the carrying capacity of ISRO’s most powerful rocket.
• Assembling spacecraft parts in orbit is not new—it’s how the International Space Station was built.
• However, this will be the first time a lunar mission follows this method, potentially setting a new precedent in space exploration.

ISRO Announces Two-Phase Launch for Chandrayaan-4; Innovative Approach and Challenges

• ISRO Chairman S. Somanath revealed that the mission configuration involves multiple launches due to the current limitations of ISRO’s rockets.
• New docking capabilities are being developed to allow the spacecraft parts to join together in both Earth and Moon orbits.
• This capability will be tested later this year with a mission called Spadex.

ISRO Announces Two-Phase Launch for Chandrayaan-4; Docking in Space

• In lunar missions, docking is a common maneuver, typically involving the lander and an orbiting module.
• Assembling modules in Earth orbit for a lunar journey is a novel concept.
• ISRO is not claiming to be the first to attempt this but acknowledges its unprecedented nature in space exploration.

ISRO Announces Two-Phase Launch for Chandrayaan-4; The Upcoming Spadex Mission

• Spadex will be ISRO’s first mission to demonstrate in-space docking.
• A detailed study and internal review for Chandrayaan-4 are complete, and the cost estimate will soon be submitted to the government for approval.
• This mission is part of ISRO’s Vision 2047, which includes plans for India’s own space station by 2035 and sending humans to the Moon by 2040.

ISRO Announces Two-Phase Launch for Chandrayaan-4; The Need to Dock Modules While in Space

• India’s future space station, Bharatiya Antariksh Station (BAS), will also be assembled in space through multiple launches.
• The first segment of BAS will be launched using the current LVM3 rocket, with the goal of having the first launch by 2028.
• A proposal detailing the construction, required technologies, timeline, and costs is being prepared for government approval.
• Additional BAS modules will be developed over time, potentially using an upgraded LVM3 or the Next Generation Launch Vehicle (NGLV), a heavy rocket currently under development.
• A new launch complex is being created to accommodate the NGLV, crucial for handling and processing the 4,000-ton rocket.

Chandrayaan-4 Mission Details

• Chandrayaan-4 will involve two launches due to the spacecraft’s size and weight.
• The spacecraft will be assembled in space before proceeding to the Moon, marking the first time in the world that a spacecraft will be launched in parts and then assembled in space.
• ISRO Chairman S. Somanath mentioned that detailed studies and cost estimates for Chandrayaan-4 have been worked out and will be sent to the government for approval.

Vision 2047: Future Ambitions

• ISRO’s Vision 2047 includes the goal of building India’s own space station by 2035 and sending humans to the Moon by 2040.
• The BAS will consist of five modules, with multiple committees working on their development.
• The NGLV design and production plan is ready and will be submitted to the government for approval.

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