Mumbai, December 30: The Indian Space Research Organisation (ISRO) has launched its year-end mission, the ‘Space Docking Experiment’ (SpaDeX), on Monday night. ISRO’s PSLV-C60 with the Space Docking Experiment (SPADEX) and 24 experimental payloads lifted off from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh. The video of the loft off has been shared by ISRO on its official social media account.
LIFTOFF!
PSLV-C60 successfully launches SpaDeX and 24 payloads.
Stay tuned for updates!
Watch live: https://t.co/D1T5YDD2OT
More info: https://t.co/jQEnGi3W2d#ISRO #SpaDeX
— ISRO (@isro) December 30, 2024
About The Mission
ISRO in its press release explained about the objectives of the mission. The SpaDeX (Space Docking Experiment) mission is an innovative, cost-effective technology demonstration launched by ISRO to showcase in-space docking capabilities. This mission, conducted using two small spacecraft, is a major milestone in India’s journey toward advanced space missions such as lunar landings, sample returns, and establishing the Bharatiya Antariksh Station (BAS).
Objectives of the SpaDeX Mission
The primary goal of SpaDeX is to demonstrate the technology for rendezvous, docking, and undocking between two small spacecraft, named SDX01 (Chaser) and SDX02 (Target), in a low-Earth orbit. Key objectives include:
Power Transfer Demonstration: Showcase the transfer of electric power between the docked spacecraft for future robotic and inter-satellite missions.
Composite Spacecraft Control: Operate docked spacecraft as a unified system.
Post-Docking Payload Operations: Activate payloads after undocking for mission applications.
Mission Details
Launch: The spacecraft will be launched aboard PSLV-C60 into a 470 km circular orbit with a 55° inclination.
Docking Process: Using precise maneuvers, the Chaser and Target spacecraft will gradually close the inter-satellite distance from 20 km to a few meters, culminating in docking.
Post-Docking Operations: Following docking, electrical power transfer will be tested before undocking the satellites, which will then operate their individual payloads for up to two years.
Key Technologies
The SpaDeX mission incorporates several cutting-edge technologies:
Docking Mechanism: A compact, low-impact system that enables smooth docking with minimal velocity.
Rendezvous Sensors: Laser range finders and proximity sensors for precise inter-satellite navigation.
Power Transfer: Technology for sharing power between docked spacecraft.
Inter-Satellite Communication: An intelligent communication system for real-time status updates.
GNSS-Based Relative Orbit Determination: High-accuracy tracking of the relative positions of the spacecraft.
New Horizons for India
If successful, SpaDeX will position India as the fourth nation globally to achieve space docking technology. This capability is crucial for missions requiring multiple launches, such as lunar landings and building space stations.
Applications of the Spacecraft
High-Resolution Imaging: SDX01 carries a miniature high-resolution camera for natural resource monitoring.
Multi-Spectral Payload: SDX02 features a multi-spectral imaging system for vegetation studies and environmental monitoring.
Radiation Monitoring: SDX02 also hosts a radiation monitor for data collection critical for future space exploration and human missions.
Collaborative Effort
The SpaDeX spacecraft were developed by ISRO’s UR Rao Satellite Centre (URSC) with support from other ISRO centers. Integration and testing were conducted under strict supervision, ensuring readiness for the mission.
