Ice on aircraft wing leads to the destruction of aerodynamic characteristics ,dynamic characteristics and flight quality, seriously threatening flight safety. Plasma ice shape regulation is a new type of de/anti-icing method, which rapidly dissolves ice accretion to intermittent ice through the thermal effect .How to realize the optimal regulation ice shape on the premise of balancing flight safety and energy consumption is a technical problem restricting plasma anti-icing methods. The typical 3D simulation ice shape was built according to the results of previous ice wind tunnel experiments and ice accretion laws of swept wings. The aerodynamic parameters under no ice, two kinds of regulation ice shape and full ice were obtained based on wind tunnel. Six degrees of freedom flight dynamics model was established. The dynamic characteristics, flight quality was comparative analyzed. More comparing and analyzing two de-icing schemes, the scheme for ice width to average aerodynamic chord length ratio at 0.15 had a better effect. A comparison method of plasma ice shape regulation scheme based on aerodynamic characteristics, dynamic characteristics and flight quality evaluation is proposed. The proposed method can provide reference for reasonable design of de-icing scheme.
Ice on aircraft wing changes the aircraft aerodynamic shape, and has negative effects on flight dynamic characteristics, seriously threatening flight safety. Plasma ice shape regulation is a new de-icing method. Plasma actuator produces an apparent thermal effect, which is designed to dissolve the continuous ice into intermittent ice pieces. How to achieve the optimal regulation ice shape to improve the flight dynamics characteristics under icing conditions is a technical problem restricting the application of this method. A simulation ice shape based on previous ice tunnel experiments and a scale model of swept wing were established. The aerodynamic parameters of no ice, full ice, and two regulation ice schemes were obtained based on wind tunnel. Six degrees of freedom flight dynamics model was established, and flight simulation had been carried out. As the analysis of trim characteristics, dynamic stability, and maneuverability, flight dynamics characteristics were better improved when the ratio of ice width to the mean aerodynamic chord was 0.15. The evaluation method of plasma ice shape regulation schemes was proposed. The proposed method, which can compare and optimize the arrangement of plasma actuators, realized the optimal regulation ice shape on the premise of balancing flight safety and energy consumption.
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