Dual-Robot Space Debris Collector System (Updated with Embedded Magnetic Net)

A Robotic, Magnetic-Adhesive Capture Network Designed for High-Efficiency Debris Retrieval in Orbit

Concept Summary

The Space Debris Collector system consists of two autonomous or semi-autonomous robotic satellites working in tandem to deploy and manipulate a specialized multi-layered capture net. This net features both adhesive and magnetic properties, enabling it to passively collect a wide spectrum of orbital debris — from metallic fragments to composite materials — with high reliability and minimal propulsion cost.

Multi-Layer Capture Net with Embedded Magnets

The capture net is engineered for dual-functionality:

1. Adhesive Surface Layer:
   • A sticky, gecko-inspired impact adhesive (Geckskin™, viscoelastic polymers) that activates only upon contact at orbital speeds, minimizing false sticking.
   • Non-tacky in vacuum and stable in temperature extremes (tested for -100°C to +120°C).
   • Ideal for non-metallic materials: paint flakes, plastic insulation, ceramic tiles, composite shards.
2. Magnetic Core Layer:
   • Flexible lattice of embedded rare-earth magnets (Neodymium Grade N52) woven into the net threads or strategically placed at mesh intersections.
   • Magnets are encased in non-conductive resin to resist radiation and thermal stress.
   • Designed to passively attract and hold ferromagnetic debris such as aluminum, titanium, iron, and stainless steel components.
   • Works even when debris is tumbling — the magnets begin pulling fragments before contact

Folding Net Retrieval System (Fishing Net-Inspired)

• Each robot satellite has motorized arms and winches to control the opening, positioning, and folding of the net.
• The net can expand to over 100–200 meters wide when fully deployed.
• Shape-memory alloy rods allow the net frame to collapse and fold inward on command, similar to a purse seine or trawl net.
• Once retracted, debris is stored in a Kevlar composite shell, ready for either controlled deorbit or upcycling.

Key Functional and Design Benefits

• Dual-capture capability: Adhesion for polymers/non-magnetic debris, magnetism for metallic objects.
• Energy efficient: No explosive mechanisms or kinetic launches—just smart positioning and passive capture.
• Safer orbit operations: Reduces fragmentation risk and satellite collision probability.
• Reusable structure: Net and bots can perform multiple capture rounds before servicing.
• Scalable deployment: Designed for single missions or networked constellations.

Positioning, Navigation & Control (PNT Integration)

• Precision coordination via onboard GNSS (Galileo/GPS), supported by star tracker cameras, IMUs, and onboard LIDAR for local targeting.
• Remote or AI-assisted control from Earth or orbital stations.
• Operates as part of a space traffic management framework, feeding location data to global collision prevention systems.