Abstract
Aircraft take-off control under conditions of windshear has recently received considerable attention in the control-theory literature. Severe windshear may cause difficulties during aircraft take-off, it has been a major cause of at least 30 aircraft accidents during the two last decades. We study the controlled take-off of an aircraft flying through an unavoidable windshear. The purpose of the guidance is to guarantee aircraft take-off without crash; no other performance criteria are applied. The proposed aircraft take-off control scheme consists of a memoryless state feedback control strategy for a class of continuous-time aircraft models including unpredictable but bounded windshear. The design of the take-off control scheme is carried out by applying a theory of deterministic control of uncertain systems. The time or the place of encountering a windshear is not known but, according to the basic assumption, the upper bound of the uncertainty—here the maximum rate of the change of the wind velocity—is assumed to be known. Such knowledge allows one to design a deterministic controller to stabilize the relative path inclination of the aircraft.
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