Long-duration human habitation beyond Earth's magnetosphere requires artificial gravity to prevent the progressive musculoskeletal, cardiovascular, and neurovestibular deterioration observed in sustained microgravity exposure. Existing artificial gravity concepts tethered systems, single-ring centrifuges, and rotating drums each exhibit fundamental limitations in gyroscopic stability, physiological adequacy, structural scalability, or integration with active propulsion and defence architectures. This paper presents the Griffiths Dual-Ring Superconducting Artificial-Gravity Habitat Architecture: a counter-rotating, magnetically levitated habitat system providing 0.8 g at the outer habitation ring (100 m outer diameter, 50 m radius) and 0.6 g at the inner laboratory ring (75 m outer diameter, 37.5 m radius), both at a common rotation rate of 3.78 RPM (ω = 0.396 rad/s). Counter-rotation eliminates net angular momentum, removing gyroscopic coupling with attitude control systems and enabling free reorientation of the combined habitat. Superconducting toroidal coils provide magnetic levitation, structural rigidity, and electromagnetic bearing functionality with field stability maintained at ±0.01 T through closed-loop flux feedback. The governing framework quantifies centripetal acceleration, hoop stress in the ring structure, magnetic levitation force balance, thermal radiative equilibrium, and angular momentum cancellation conditions. Coriolis acceleration at walking speed (1 m/s) is 0.79 m/s² (8.1% of local gravity), within published adaptation limits. The gravity gradient across a 1.8 m crew height is 3.6%, negligible relative to physiological thresholds. The architecture integrates with the Griffiths Reactive-Field Framework (GRFF) four-layer defence envelope, GNMT propulsion, NGLS EVA logistics, and the DIGSP governance protocol, forming a complete deep-space habitation system within the Griffiths Canon. The habitat architecture is now explicitly integrated with the GNMT v7.0 Nuclear Microwave‑Thermal propulsion system and its Rotating Electromagnetic Nozzle (REMN) stacks, providing a unified propulsion–habitation interface. Dedicated EVA logistics ports support the Griffiths Free‑Flying EVA Logistics Sled (NGLS) for external maintenance, cargo movement, and distributed construction. Two experimental bays in the central spine are reserved for compact superconducting EM‑curvature test modules, leveraging shared REBCO‑class coil technology while maintaining full isolation from the levitation system. These integrations align the habitat with the broader Griffiths Canon and its propulsion, logistics, and experimental frameworks.

Development and Comparison of an Artificial Gravity Concept for Human Spaceflight - NASA Technical Reports Server (NTRS) ## NTRS ## NTRS - NASA Technical Reports Server Search Collections About News Help Login Back to Results Development and Comparison of an Artificial Gravity Concept for Human SpaceflightArtificial Gravity (AG) for a long-duration space journey has been theorized since the dawn of human spaceflight. The purpose of this project is to begin bringing those concepts into real-life. The goal and primary study for this project is to research and understand the physics behind making a rotating centrifuge and the human limitations that may contribute to the design. The research first started with finding the physics equations we can use to calculate the rotational speed required for a certain gravity or the required radius for the centrifuge structure, this equation is a(sub c) = v2/r = w(sub c)2 r, where v is linear velocity, r is the radius of the structure, and is the rotational speed. Next, it is important to understand AG may be worthwhile because of the negative health effects of microgravity. The research then leads to finding human limitations in a rotating

## Chapter 2 PHYSICS OF ARTIFICIAL GRAVITY Angie Bukley 1, William Paloski, 2 and Gilles Clément 1,3 1 Ohio University, Athens, Ohio, USA 2 NASA Johnson Space Center, Houston, Texas, USA 3 Centre National de la Recherche Scientifique, Toulouse, France This chapter discusses potential technologies for achieving artificial gravity in a space vehicle. We begin with a series of definitions and a general description of the rotational dynamics behind the forces ultimately exerted on the human body during centrifugation, such as gravity level, gravity gradient, and Coriolis force. Human factors considerations and comfort limits associated with a rotating environment are then discussed. Finally, engineering options for designing space vehicles with artificial gravity are presented. Figure 2-01. Artist's concept of one of NASA early (1962) concepts for a manned space station with artificial gravity: a self inflating 22-m-diameter rotating hexagon. Photo courtesy of NASA. 1 ARTIFICIAL GRAVITY: WHAT IS IT? 1.1 Definition Artificial gravity is defined in this book as the simulation of gravitational forces aboard a space vehicle in free fall (in orbit) or in transit to another plane

# What would the size and rotation of a station need to be to produce 1g gravity from head to toe? Tags: artificial-gravity, humans - Score: 39 - Views: 24348 - Answers: 2 - Answered: yes - Asked by: Jack B Nimble (948 rep) - Asked: 2013-07-17 - Edited: 2020-03-10 - Site: space ## Question A structure with a radius of 224m rotating at 2 rotations per minute will generate 1g of force on the inside (spincalc). It will generate that force on the feet, but as you travel up the body the amount of force applied reduces. According to Wikipedia (citation needed) a larger radius and a slower rotation should be make the effect more consistent for a standing human. Playing around with the spincalc tells me that with a 1000 meter radius and a rotation of 0.95 rotations per minute is also at 1g, but I have no idea how that will affect the reduction in inertia felt as you travel away from the outer edge. What radius and rotation would be needed to produce 1g consistently from the floor to a height of about 6ft (2m) within a tolerance of a few percentage points (maybe 5%)? ## Answers ### Answer by AlanSE (score: 41 [ACCEPTED]) What radius and rotation would be needed to produce 1g c