NAWCAD investigated the abilities of small stature females (=/< 120 lb) to fly under G-stress using the Dynamic Flight Simulator (DFS) and its tactical fight/attack cockpit, displays and controls. Determine ability to exert NACES ejection seat actuation pull force under static, acceleration and simulated flight conditions; support up to 5 lb of added head weight (AHW) under catapult, arrestment, and aerial combat maneuver G-loads; and reach all controls. Ten subjects (six small stature females, on medium female and three males) participated. The AHW task included three helmet weights, 3.5 lb (standard configuration), 4.25 lb and 5 lb and subjects were tasked to accurately read cockpit displays. Muscular exertion and fatigue (arm, shoulder, neck) assessment used EMG. Women successfully ejected using a two-hand grip under G-stress. Subjects read all displays supporting 5 lb under +6 Gz. Most small stature female subjects could not fully support their heads wearing 3.5 lb helmet during flat spin conditions. Human factors deficiencies were noted in the areas of torso harness fit, inertia reel placement relative to shoulder width, and the ability maintain a full range of stick motion. Within the scope of these tests, small stature females demonstrated the strength to safely initiate ejection during severe physically taxing dynamic conditions but had difficulty supporting AHW under -Gx stress. Cockpit accommodation and pilot reach limits may hinder the small stature pilot during flight emergencies.


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