The Dual‑Ring Superconducting Artificial‑Gravity Habitat is a counter‑rotating, magnetically levitated deep‑space habitation architecture designed to provide long‑duration artificial gravity without the gyroscopic penalties of single‑ring centrifuges. The system consists of two concentric toroidal rings: an outer habitation ring with a 100‑metre diameter delivering 0.8 g at a rotation rate of 3.78 RPM, and an inner laboratory ring with a 75‑metre diameter delivering 0.6 g at the same rotation rate. Counter‑rotation cancels net angular momentum, allowing the entire habitat to reorient freely without fighting stored rotational momentum.

Each ring is levitated and structurally stiffened by a continuous toroidal high‑temperature superconducting (HTS) coil operating at 20–40 K. The coil provides 1–2 T bulk magnetic field strength, generating levitation pressures near 900 kN/m² across the bearing gap. Embedded REBCO micro‑coil inserts generate 10–40 T localised fields for fine‑trim control, high‑frequency disturbance rejection, and flux‑boundary sharpening. A closed‑loop flux‑feedback system using distributed Hall sensors maintains field stability to ±0.01 T, ensuring ring alignment, bearing stiffness, and vibration damping. Cryogenic systems include closed‑cycle cryocoolers, multi‑layer insulation, quench detection, and an 8–12 hour thermal buffer.

Artificial gravity is generated through centripetal acceleration. At 50 m radius, ω = 0.396 rad/s produces 7.85 m/s² (0.8 g). The inner ring at 37.5 m radius receives 5.88 m/s² (0.6 g). Coriolis acceleration for a crew member walking at 1 m/s is 0.79 m/s², approximately 10% of local gravity—within published human adaptation limits for 3–4 RPM environments. Gravity gradient across a 1.8 m crew height is 3.6% in the outer ring and 4.8% in the inner ring, well below the 10% threshold associated with disorientation or cardiovascular strain.

Thermal regulation relies on radiative rejection through deployable panels providing ~470 m² of radiator area, sufficient for 250 kW of heat rejection at 320 K. Phase‑change material (PCM) thermal buffers absorb transient loads during radiator reorientation or partial failure. Cryogenic isolation keeps parasitic heat leak to ~200 W per ring.

Power distribution uses a triple‑redundant superconducting bus (A/B/C) with life‑support priority on Bus A and automatic load‑shedding on Bus C during contingencies. Power is supplied through a rotating transfer assembly at the central spine, compatible with GNMT or MSH propulsion systems. Superconducting conductors provide inherent magnetic shielding against solar particle events.

Failure modes include ring desynchronisation, magnetic field collapse, thermal overload, and structural breach. Desynchronisation triggers differential electromagnetic braking; uncorrectable divergence initiates controlled spin‑down. Magnetic field loss transfers load to mechanical backup bearings rated for 72 hours of reduced‑RPM operation. Radiator failure triggers staged load‑shedding. Pressurised sectors isolate automatically on pressure loss. Micro‑coil failure degrades to bulk‑coil‑only mode without compromising levitation.

Overall, the architecture provides a physiologically adequate artificial‑gravity environment, zero‑momentum reorientation capability, non‑contact structural support, and integration pathways with propulsion, EVA logistics, and defensive field systems, forming a complete deep‑space habitation platform.