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This study proposes a flight control system for tailless unmanned combat aerial vehicles (UCAVs) and applies it to a representative example: the UCAV1303, an unstable blended wing body (BWB) aircraft. The UCAV1303 has no tail wing and a large sweepback angle, as a result of which it shows highly nonlinear aerodynamic characteristics such as wing rock and the pitch break phenomenon. In particular,...
This paper introduces an algorithm for the autonomous shipboard landing of unmanned helicopters in crosswind, using time-delay control. The proposed algorithm is composed of two parts: the controller, augmented with time-delay control, and the guidance law. The time-delay control is actively adopted to compensate for the model uncertainties of a rotorcraft. The guidance law considers crash avoidance...
This paper proposes an algorithm for autonomous shipboard landing of unmanned helicopters in crosswind using Time-Delay Control. The proposed algorithm is composed of two parts: the controller augmented with Time-Delay Control, and the guidance law. The model uncertainties caused by external disturbances and vehicle speed change are compensated by Time-Delay Control. The guidance law considers crash...
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