Brief Context
Nearly two months after ISRO successfully docked two satellites in space, it carried out an undocking procedure recently.
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Syllabus: GS3/ Space
In News
- Nearly two months after ISRO successfully docked two satellites in space, it carried out an undocking procedure recently.
More About the News
- This makes India the fourth country after the US, Russia, and China to demonstrate space docking and undocking capabilities.
- To demonstrate this capability, ISRO launched the experimental Spadex mission on December 30, 2024.
What is Space Docking?
- Space docking is the process of bringing two fast-moving spacecraft into the same orbit, gradually bringing them closer, and physically joining them together.
- This is a highly complex maneuver requiring precise navigation, automated control, and real-time adjustments.
Why is this Important?
- Enabling Heavy Space Missions: Large spacecraft cannot be launched in one go due to weight limitations.
- Docking allows modular spacecraft assembly in orbit, similar to the International Space Station (ISS).
- Critical for Future Human Spaceflight: Essential for transporting astronauts & supplies to India’s planned space station by 2035.
- Key to India’s crewed lunar missions (by 2040) under Gaganyaan & future Moon missions.
- Supports Lunar Sample Return Missions: Chandrayaan-4, India’s future mission to bring back lunar soil and rock samples, will rely on docking technology.
- Advancing In-Space Servicing & Robotics: Enables repairing, upgrading, and refueling satellites in orbit without launching new ones.
About India’s Space Docking Experiment (SpaDeX)
- Objective: To demonstrate in-space docking, rendezvous, and undocking capabilities.
- Satellites Used:
- SDX01 (Chaser Satellite): Actively approached and docked with the target.
- SDX02 (Target Satellite): Served as the docking module.
- Launch Vehicle: PSLV-C60
- Orbit: 470 km circular orbit
- Developed by: UR Rao Satellite Centre (URSC), Bengaluru, with support from other ISRO centers.
Post-Docking Applications
- High-Resolution Imaging (SDX01): Capturing Earth observation images.
- Multi-Spectral Payload (SDX02):Monitoring natural resources and vegetation.
- Radiation Monitoring (SDX02): Studying space radiation to support future human space missions.
Source: IE