Considering the problem of the complicated motion relationship and difficult optimization of jointly adjustment mechanism of aero-engine variable stator vane

a new method to design and optimize the jointly adjustment mechanism was proposed. The kinetic equation of the two-stage jointly adjusting mechanism was deduced using the graphic method and the homogeneous coordinate method and the MATLAB software. The key components of the two-stage jointly mechanism were optimized using the genetic algorithm. This developed method was applied to optimize a two-stage jointly adjusting mechanism. The optimization objects were the crank adjustable end length and the angle between the crank adjustable end and fixed end. The optimal result was obtained such that the first stage rocker arm rotation angle was twice the rotation angle of the zeroth stage rocker arm

and the first stage rocker arm rotation angular speed was also twice the zeroth stage rotation angular speed.