More than a Manipulator: Planning Propellant-Free Attitude Maneuvers for Free-Floating Spacecraft

• URL: http://arxiv.org/abs/2607.12130v1
• Date: Mon, 13 Jul 2026 20:27:09 GMT
• Title: More than a Manipulator: Planning Propellant-Free Attitude Maneuvers for Free-Floating Spacecraft
• Abstract summary: Spacecraft attitude control is traditionally achieved using momentum exchange devices or propellant-consuming thrusters.<n>A growing number of missions require robotic manipulators, which are typically treated as disturbance sources to be rejected.<n>This work investigates the use of manipulator motions for propellant-free attitude control by formulating a trajectory optimization problem.
• Score: 0.30586855806896035
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Spacecraft attitude control is traditionally achieved using momentum exchange devices or propellant-consuming thrusters. Meanwhile, a growing number of missions require robotic manipulators, which are typically treated as disturbance sources to be rejected rather than as actuators for spacecraft reorientation. This work investigates the use of manipulator motions for propellant-free attitude control by formulating a trajectory optimization problem with critical joint and collision avoidance constraints. Using an interior point solver for the resulting nonlinear program, complex slew and detumble trajectories are demonstrated for a range of spacecraft-manipulator systems with varying kinematic complexity and mass properties. The achievable control authority is compared directly with that of reaction wheel arrays via momentum and torque envelopes, demonstrating the potential for manipulators to serve as redundant or even primary attitude control systems. This work provides a framework for using manipulators as multipurpose attitude control actuators, with particularly promising applications in in-space assembly and manufacturing when grasping payloads with high relative mass fractions.

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