Abstract

High-speed low-altitude missions subject the crew and the subsystems to an extremely severe vibration environment. The integration of the flight crew into the weapon system requires consideration of the cockpit displays, the navigation and target acquisition subsystems, the automatic control systems, and the dynamic characteristics of the airframe and flight controls. The aeroelastic response of a long-range strategic type of airplane is analyzed to illustrate some of the considerations that must be included in designing for low-altitude flight. The effect of changes in stability characteristics on dynamic response is calculated, and the effects of the changes on the subjective discomfort of the crew are evaluated. The results indicate that significant improvements in ride quality can be achieved through modifications to the stability characteristics of the airplane and illustrate the considerations required to improve weapon system effectiveness.

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