The Plane Mechanical Manipulation Of The Transmission Performance Of The System Computational Analysis And Optimization Of The Design Study

The drive performance design and kinematical modal line calculation are necessary design work of the primary manipulation systems of aircraft, therefore, in modern times, it is of engineering research value and applied significance to establish a computer aided design software taking advantages of modern computerized numerical calculation and visualized software techniques for the realization of virtual reality to design and calculate the mechanical systems, so that it can improve design quality, optimize systematic construction and reduce development time and cost.Based on the constructive features of the movable components of primary aircraft manipulation systems, in this thesis, seven typical geometrical configurations are chosen as modeling simplifications to commonly seen drive mechanisms with different transmission properties in ordinary mechanical manipulation systems of aircraft. Three coordinate systems are set for conveniences to describe the structural parameters and moving positions of the components. By use of analytical geometry method to calculate the coordinates of movable points, the kinematical equations of the seven components are derived, which lays theoretical groundings for computer aided design.With application of modern object oriented program design technology, a visual computer aided design software package is developed for the numerical computation and drawing display to the mechanical drive properties of primary manipulation systems with utilizing mixed OpenGL graphics programming under C + Builder integrated development environment. The package is composed of several main functional modules, such as the module to construct digital model of primary manipulation systems, the computational module of drive-ratios, drive-coefficients and kinematical modal line, and the visualized display module to static drawings and dynamic animation. The numerical computations of the rudder, elevator and aileron of some real-world aircraft are made, and it is follows that the software package has good computational correctness and applicability to aid engineering design.The research work of the thesis also studies and discusses the optimal design of typical non-linear six-bar mechanism in a primary manipulation system of aircraft. The non-linear kinematical equations of the mechanism are derived, and an optimal least-squares method to determine geometrical parameters of the components are proposed based on non-linear design curves. An example of application is conducted to check the correctness and validity of the mentioned kinematical relations.The thesis introduces in detail the engineering backgrounds of the research work and relative theories on the primary manipulation system of aircraft. The typical drive mechanisms in this system and their kinematical equations are derived carefully. Based on the conceptual outlines of C++ Builder program design and visualized OpenGL programming technologies, the design thinking, implementing process and cases validation of the developed software to digital design of primary manipulation systems are explained particularly, and some further work development are envisaged.