Rotating Deorbit with Constant Thrust for Tethered Systems

Tethered towing is viewed as a promising debris removal method, with collision avoidance with debris posing the key challenge. A novel orbit transfer scheme, incorporating spin-up maneuver, rotating flight, and momentum exchange deorbit achieved by tether cutting, is proposed for tethered towing systems. A model predictive controller alters thrust direction to fulfill specific conditions during spin-up maneuver. Following this, the centrifugal force is leveraged as tether tension to prevent postburn collision. System parameters, such as tether length and rotation rate, are also studied. Simulation results validate the proposed approach’s ability to deorbit the debris satellite, avoid collision risks, and reduce fuel consumption.