Research On Parameter Optimization And Automatic Flight Of Aircraft Carrier Catapult Take-off

The way of Carrier-based aircraft took off has been researched for decades, and now themainstream approach is to catapult take-off and slip off flying leaps, and catapult take-offstudies is born when the aircraft carrier has already begun. Flying leaps technology in foreigncountries, as early as thirty years ago slide began, catapult take-off technology for nearly60years of history; In China, the catapult takeoff technical inexperienced, either catapult take-offorski-jump has only just begun to study, mostly in the theory and simulation phase. In theearly1990s, China started to focus on the study of carrier-based aircraft, the time it seemsfrom the literature, the initial research basically catapult off the technology, but by themid-1990s began to ski-jump Research related literature, the absence of sufficientexperimental data and theoretical experience in shallow domestic aircraft carrier take-offtechnology research is basically confined to the stage of theoretical analysis and simulationmodeling.Therefore, researching the take-off characteristics and parameters affect of aircraftcarrier catapult take-off have a very far-reaching significance and practical value on aircraftdesign, catapult design and take-off parameters default.In this paper, based on the purpose and requirements of the subject,deep from the generalto the local study and research.Firstly, the whole process of carrier-based aircraft catapult offis described, and described the characteristics of catapult take-off, classification and securitystandards to take off, these are the basis for follow-up studies; Next, created a catapulttake-off of the coordinate system and the required the conversion between coordinate systems,analysed the force of the ejection process of the aircraft to take off, established a dynamicmodel of each stage; on this basis, using MATLAB simulation software to establish the modelof carrier-based aircraft catapult off in various systems, including engine model, catapultmodel, landing gear model, aerodynamic model, airframe model, according to the design ofthe simulation system to the F-18carrier-based aircraft of USA for the study, analyzed theimpact of aircraft carrier catapult take-off characteristics of the key parameters, and proposeparameters to meet the safety standards should take off the range of choice; Finally, based onthe parameters of research on the impact of the proposed carrier-based aircraft catapult off anaircraft ascending angle of attack for automatic control to adjust the aircraft attitude in orderto ensure the safety off, expand preferences range, land-based aircraft attitude will keep thesystem applied to the carrier-based aircraft, and automatic control theory based on knowledgeof the design angle of attack automatic controller, using MATLAB simulation softwaresystems analysis and simulation, results show that the angle of attack in ascent stage automatic control can effectively control the aircraft attitude, reducing the amount ofsubsidence and increase climb rate, meet safety standards of take-off, while also expand therange of pre-selection of parameters before take-off, there is some theoretical and practicalvalue.