Published September 20, 2026
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Orbital Stewardship Habitat (OSH-1): A Human-in-the-Loop Utility Station for Orbital Debris Remediation, On-Orbit Servicing, and Circular Space Operations
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Description
Abstract:
The accumulation of non-cooperative, non-passivated space debris in high-density low-Earth-orbit (LEO) bands presents a severe structural threat to space sustainability and orbital safety. Traditional remediation strategies are fundamentally constrained by the steep delta-V penalties of multi-plane maneuvers and the high physiological and operational risks associated with crew-directed manual interception. This paper introduces the concept architecture and systems engineering framework for the Orbital Stewardship Habitat (OSH-1), a permanently or semi-permanently staffed municipal-style utility station designed to decouple crew habitation from hazardous close-approach maneuvers.
The accumulation of non-cooperative, non-passivated space debris in high-density low-Earth-orbit (LEO) bands presents a severe structural threat to space sustainability and orbital safety. Traditional remediation strategies are fundamentally constrained by the steep delta-V penalties of multi-plane maneuvers and the high physiological and operational risks associated with crew-directed manual interception. This paper introduces the concept architecture and systems engineering framework for the Orbital Stewardship Habitat (OSH-1), a permanently or semi-permanently staffed municipal-style utility station designed to decouple crew habitation from hazardous close-approach maneuvers.
Operating under the principle that human operators serve as supervisory controllers rather than active interceptors, OSH-1 coordinates a decentralized fleet of lightweight robotic chaser vehicles from a stationary orbital base. The systems architecture implements a modular external workspace configuration—comprising an External Quarantine Truss, an unpressurized robotic work bay, and an isolated Inspection Range—to isolate high-risk propellant, explosive, and structural hazards away from pressurized crew modules.
To bridge operational concepts with verifiable hardware-level execution, this dossier derives:
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Autonomous Contact Dynamics: A 1 kHz covariance-aware Generalized Kalman Filter state-space matrix mapping position, relative closing velocities, and angular momentum vectors to prevent target tearing during capture.
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RTL Abort Architectures: A synthesizable hardware-level VHDL Safety Abort Core that continuously audits 2.5 km keep-out boundaries, revoking autonomous docking states and triggering defensive collision avoidance burns within a single 50 MHz clock cycle if a cryptographic signature is invalid or absent.
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Environmental and Mechanical Controls: Sub-millisecond zero-leak fluid coupling purge loops to mitigate toxic hypergolic cross-contamination, alongside triaxial accelerometer damping arrays (Q=100) to isolate tool-head vibrations from crew bulkheads.
This systems synthesis is grounded in flight-validated prior art, linking historical space-station capture studies with contemporary commercial active-debris-removal (ADR) interfaces, including Astroscale's ferromagnetic plates and the European Space Agency's (ESA) Mechanical Interface for Capture at End-of-life (MICE) standards. OSH-1 provides a scalable, legally authorized, and risk-mitigated blueprint to transition space-domain remediation into routine orbital infrastructure.
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