Training effectiveness studies have not conclusively established the need for motion as a training enhancement or to reduce the incidence of simulator sickness. Yet many rotary and fixed wing training systems continue to use motion base trainers for initial and sustainment skill training. This paper introduces an approach for estimating the impact of motion system restrictions on training effectiveness in rotary wing aircraft.

A study which forecasts the impact on training effectiveness of restricting motion system capability in Device 2F120, the operational flight trainer for the CH-53E helicopter, was conducted. The impacts of restricted motion on system cuing, pilot training performance and transfer of training were estimated. In Phase 1, restricted motion cuing was analyzed with respect to performance of four different maneuvers. Restricted cuing equivalent to 50 percent system capability was predicted to impact Tail Rotor failure/separation maneuvers only.

In Phase 2, all four maneuvers were flown in three trials under three different motion system configurations. Simulator performance of restricted and no motion groups was equal to or exceeded that of a full motion group for each of the maneuvers. No difference in simulator sickness between motion groups was found.

In Phase 3, relevant literature on transfer of training in helicopters was consulted. No negative impacts were forecast for the devices given improved visual systems and comparable training syllabi.