Anti Coriolis Force Centrifuge

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Invention pertains to the mitigation of Coriolis force in a system or apparatus using a novel method of rotation. The centrifuge is rotated in its primary direction at twice the target speed of rotation, while simultaneously rotating in the opposite direction, but at once the target speed. The combined effect is to reduce speed of rotation in the primary direction to once the target speed, whereas Coriolis force of equal strength is generated both to the right and to the left: The target speed of rotation is achieved in the primary direction, with remaining Coriolis force effectively zero.

This may be expressed where v is centrifuge’s combined speed of rotation (ω) in the primary direction (positive counter clockwise; negative clockwise) and c is the Coriolis force (to left and to right):
v = 2ω - 1ω
v = 1ω
c = 1c – 1c
c = 0

By way of a thought experiment, imagine a man riding counter clockwise on a merry go round at 2 rpm (rotations per minute) (Figure One). He simultaneously walks clockwise along its rim at 1 rpm. He is still turning counter clockwise with the merry go round, but now at only 1 rpm. Coriolis force, however, is now generated to both sides equally, riding and walking opposite at 1 rpm speeds, so that these cancel each other out.

Originally envisioned having a circular track ring: It would be able to support magnetic suspension means (Maglev) on both its outer and inner circumference, especially where the inner edge is half the diameter of the outer. Outer side would be used for the counter clockwise propulsion and inner side for clockwise (not shown).

Mechanical means may be used instead, wherein a large gear and a small gear would provide the relative proportions for the system (Figure Two): It uses a free floating planetary gear carrier between internal ring gear attached to nonrotating suspension frame or bulkhead and external ring gear attached to rotating hub of wheel. The centrifuge “rides” the gear carrier as it turns within the internal gear, which provides the primary rotation; the hub is counter turned opposite. Conventional motor drives might provide power (set of two shown). Speed of motor drives may be selected based on the radius of the wheel to calibrate centrifugal force.

A human habitation wheel may turn inside of a pressurized module, wheel comprising a wire mesh basket with equipage to one or both sides, and rotation mechanism inboard. (Figure Three). A radial ladder connects the walking deck of the wheel to its center hatch. The wheel provides one Earth gravity (1G) centrifugal force at deck for walking, running, sitting, hygiene and so on, and to prevent microgravity effects on the astronauts’ bodies.

One advantage is that almost any suitable radius may benefit from the invention, from tabletop centrifuges up to large space colony wheels, with Coriolis forces canceled by their equilibrium. Applications include industrial and other processes and devices where generation of the Coriolis force is a


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  • Name:
    Leonard J Holmin
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