To help student pilots combat airsickness when conventional methods failed, the Royal Canadian Air Force will put them through an Air Motion Sickness Desensitization Program (AMSDP) that uses a spin chamber to desensitize airsick aircrew.
The spin chamber is a single-axis, bi-directional, lightproof, enclosed cabin rotating between 4 to 20 revolutions per minute.
The idea is to suppress hypersensitivity to air sickness using repeated and controlled exposure to movement in order to encourage adaptation.