Plain English Meaning
A spinning chair used during training so a pilot can feel — in a safe setting — how easily the inner ear can be fooled about motion and orientation.
Full Definition
A rotating chair used in pilot training to deliberately produce spatial disorientation, allowing the pilot to experience and recognize the false sensations the inner ear creates during sustained or changing rotation.
Context Anchor
Seen in instrument flying discussions about coping with spatial disorientation and learning why body sensations can be unreliable in flight.