A study was undertaken to investigate the feasibility of providing motion simulation with an in-cockpit device rather than an external motion platform. The conventional wisdom has deemed that it would not be feasible to provide the necessary stimulation of the vestibular apparatus because of insufficient excursion inherent in an in-cockpit device. This paper addresses that issue in light of recent research that begins to clarify this interrelationship between the visual and vestibular systems in the perception of motion. A novel approach is suggested which relies heavily on the coordination of the visual and vestibular systems. In addition, experimental protocols are suggested by which the approach can be verified. This study was originally performed for helicopter simulators but the technique is applicable to fighters as well and perhaps even to transport aircraft.