What rotation rate is considered the upper limit for long-term comfort for humans on a spinning space station?
Answer
2 revolutions per minute
The human inner ear, which controls balance and spatial orientation, is exceptionally sensitive to rotational motion. Research indicates that rotation rates exceeding 2 revolutions per minute (RPM) trigger the Coriolis effect, which results in significant disorientation and motion sickness. To ensure crew health and mission effectiveness, artificial gravity designs must maintain rotation speeds at or below this threshold to allow occupants to function without persistent vestibular distress.
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