Analysis And Simulation Of Carrier Aircraft Off-Center Arresting Landing Process

Stress state of Carrier-based aircraft arresting rollout is very complex．Aircraft is subjected toaerodynamic，friction，engine thrust，and block resistance of the landing gear．It mainly dependson the output loads of landing gear that aircraft land safely and meet with the limit indexes，such asthe longitudinal overload and overrunning length．So，analysis and design of the resistant force playa key role in dynamic analysis of carrier-based aircraft arresting rollout．Considering syntheticallyaerodynamic， friction and engine thrust effect， this paper has gradually establishedsingle-degree-of-freedom，two degrees of freedom and four degrees of freedom nonlinear dynamicmathematical model according to principle by brief into deep，respectively based on linear motionhypothesis，plane movement hypothesis and space motion hypothesis，all of the models take thetension of arresting cable within the scope of linear elastic change into consideration．From theoptimal control theory，dynamic differential equation of the off-center arresting landing system areconverted into the multi-objective optimal control problems，whose main performance index is tokeep aircraft speeding up with uniform acceleration as longer as possible．Take the release rate ofarresting cable as the control input，the optimal trajectory of the arresting system under differentworking conditions were obtained by the Gauss Pseudospectral Method．The influence of systemparameters on the dynamic response of the system are analyzed．System`s corrective deviationperformance and the affect of large sinking speed on dynamic response characteristics of arrestingsystem are also analyzed by simulation．The research results give a assistant reference to dynamicsanalysis of carrier-based aircraft arresting landing system，design of arresting gear，design forimprovement cushioning property of landing gear and design of automatic carrier landing controlsystem．The simulation results show that：compared with the results of energy method， design ofthe block resistance and the optimization track，results of the optimal control method which isbased on the mathematical model in this paper，are more conducive to ensure the safety of pilotsand improve service life of the airframe structure and the landing gear．...