A Study Of Aircraft Wing-body Automatic Joining Technique Based On Minkowski Sum

The size of docking area between the wing-body of the new generation is large, complex-shaped and curved socket and wing-body docking accuracy also has a very high standard requirement, which means that traditional methods can not satisfy the current docking accuracy requirement. To solve the problem of the accuracy of automatic docking wing-body aircraft, this paper presents a new method of calculating the convex and concave based on Minkowski Sum, and is first applied to this new method of the automatic docking wing-body aircraft. As a result, final assembly of the wing-body aircraft will have shorter cycles, lower production costs, and it will also play a positive role in improving the quality of aircraft design.First, this paper proposes a new Minkowski Sum accurate collision detection method to calculate the concave polyhedral and a convex polyhedral, and also elaborate the theory of the new Minkowski Sum method. Based on the application information about this method, the paper describes in detail the process of construction of the Minkowski Sum body interface portion of the wing section and the data structure needed during the process of construction, and meanwhile the new algorithm of Minkowski Sum is expounded. And the research of the virtual docking process between fuselage and wings ultimately proves that this new method is a good solution to the docking process issues and can improve the accuracy of docking quality.Second, the new interface Minkowski Sum fuselage and wing interface structure is analyzed, and a new set of faces of Minkowski Sum divides into two categories, namely convex surface and the interior surface of the envelope. And the collection of origin in accordance with the precise positional relationship of the set of origin and two surfaces, the relative positional relationship between the wing and the fuselage interface can be accurately analyzed. And this method is verified with a high accuracy and efficiency through a great number of illustrations.Third, based on a new theory expounded in the fuselage and wing base automatic docking of Minkowski Sum, this paper will introduce a new method of Minkowski Sum applied to automatic docking with detailed design. The new Minkowski Sum applies to two sections that are the fuselage and docking areas of wings in order to search the finest construction location and prepare for the further construction stage. The precise location relationship between the origin and the interface of the fuselage and wing structure of Minkowski Sum and the interface on each side of the positional relationship between the two interfaces can guide the docking and ultimately achieve the perfect assembly. Using virtual simulation technology to complete the assembly of the fuselage and wing simulation, it verifies the accuracy and feasibility of the method in the assembly simulation, accuracy and efficiency.Finally, in order to verify the feasibility of the new Minkowski Sum applied to the assembly simulation, QT and Open GL graphics library are used to model of the aircraft fuselage and wings and also carry on the virtual assembly simulation.