Analysis Of Properties And Control System Primary Design On New Pattern Overpressure Inflatable Parafoil Vehicle

Overpressure Inflatable Parafoil has excellent viability and application value because of its advantage on high aerodynamic efficiency, strong controllability and the ability of standing against wind, therefore, it can be used in fields such as precise recovery and folding vehicle. Along with the technique developing, this kind of vehicle could be a hotspot and developed widely, because of its particular advantage in long distance, high altitude, long flight time and good maneuverability. There is still a large difference internal than in other countries, researching in relative field. This thesis begins at the point of view of collectivity design, being analyzed thoroughly and systematically in method of theoretical analysis and numerical simulation, including design and analysis of the inflatable wing, dynamics model and concept design of the control system of Overpressure Inflatable Parafoil. Some valuable conclusions were drawn.Dynamic analysis and transmutation properties of the longitudinal and latitudinal meshwork inflatable wing are discussed, and the design method is educed to approach the normal aerofoil exactly. Aerodynamic performance of the inflatable wing is analyzed thoroughly and systematically in method of comparing to the normal aerofoil, by using the CFD calculation software, clarifying that generally speaking, aerodynamic performance of the inflatable wing goes down compared to the normal aerofoil, but not observably. It could provide feedback references to the work of collectivity design and create qualification to the analysis of dynamic properties.6DOF dynamics model of Overpressure Inflatable Powered Parafoil is built up. Apparent mass is expressed as the meaningful matrix form, and educed half experiential calculation formula. According as the analysis of the research of inflatable wing recently, aerodynamic force is gained by the means of aerodynamic estimation combining with engineering subsection disposal. Some primary design parameters'effects on the system performance of Overpressure Inflatable Parafoil were analyzed by emulation calculation. Some valuable conclusions were drawn. It could provide valuable references of design and evaluation of the system collectivity scheme and analysis of movement state.At the point of view of concept design, the hardware and software of control system are designed, link the two together. The stance control law of typical movement state is designed, which incarnate the guide idea of control system collectivity, grounding the future detailed design.The study accomplished in this paper could provide references of key technique and feasibility research to the collectivity design, analysis and research on relative problems of the new pattern Overpressure Inflatable Parafoil.