Study On Optimization Design Of Rotor Blade Of Flying Car

With the continuous innovation and development of modern means of transport, theinternational has aroused a tide of studying flying car. Flying car own major components ofboth car and aircraft, which makes it can travel on the ground and fly in the air, turning to beland and air amphibious with excellent maneuverability. Vibration control of rotor-flying carblades has been the key issue to optimize its design, and in order to solve this problem,regarding optimizing the dynamic characteristics of the blade as goal, the rotor blades offlying car has been performed topology optimization based on the finite element method inthe paper, in reference to the relevant domestic and international research, and a new type ofinflatable rotor blade has been designed on the basis.On the basis of the design parameters of rotor blade of a flying car, the blade finiteelement model was established made of five parts which are spar, counterweight, filler,trailing edge strip and skin. Modal analysis of20bands is given in the paper, getting the first20bands modal parameters of the blade.Dynamics characteristics of blade spar was studied based on the blade modal analysis,which compares the20bands modal natural frequencies and mode shapes between blade andspar, and obtains sympathetic vibration regions. On this basis, put maximum stiffness as theobjective function, topology optimization on spar overall and cross-section study is conductedrespectively. And final results of the most representative are studied in depth aftercomparative analysis of the topology optimization results under different parameters. Insumming up the results of each topology optimization, a twice modeling is on. According to the special requirements of rotor-flying car blade, a pioneering inflatablerotor blade design is presented. In using carbon fiber cloth as the strengthening skin, theflexural rigidity and carrying capacity of the inflatable blade are greatly enhanced. Afterpreliminary test and verify of carrying capacity of the inflatable blade, the results show thatthe inflatable blade meets the basic requirements of rotor blade and this concept design isfeasible in theory.