Research And Implementation Of Generic Aircraft Model Generation System

The aircraft model is an important part of the combat simulation model system.However,there are kinds of modern fighters which have complex composition of functions,the existing aircraft models are modeled alone from zero to the end for specific application needs form one hand,it not only has hard work but also has the problems that binding with application and having poor reusability,from the other hand,it can be configured by parameterization,model generated by this method is often bound to the tool platform and has limited functions,it is difficult to modify and upgrade and is hard to meet the needs of the continuous application development.Therefore,it's of great theoretical significance to carry out research on generic aircraft model generating technology by parameter configuration and model assembling in order to improve the developing efficiency and reusability of aircraft model and needs of continuous military simulation development.Based on the theory and technology of the existing aircraft model,this paper focus on the structure of generic aircraft model generating system,the parametric modeling technology of aircraft platform model and equipment model automatically assembling technology,the main work and innovations are the following:(1)The aircraft model is usually implemented by inheriting the model base class in the existing aircraft modeling tools.However,it still needs to write a large amount of code when adding new functions or combination relations which makes it difficult to realize the rapid generation of different aircraft model.Therefore,a structure of generic aircraft model generating system based on parametric modeling and automatic assembling.The structure consists of an aircraft platform model template,an on-board equipment model,a parameter configuring pane and a model generator.The model generator can automatically configure the parameters of aircraft platform model and assemble the airborne equipment model according the configuration files generated by the configuring pane,thus it solves the problems of versatility and reusability of aircraft model.(2)The key issue to the generic aircraft model is the versatility of the platform model.Therefore,a parametric modeling technique for aircraft platform model based on model template is proposed.First,the different characteristic attributes of different functional models in different aircraft platforms are extracted as the parameters to be configured,second,generic platform function model algorithm and template are built,and aircraft platform model is rapidly generated by parametric modeling based on function model template so as to provide an effective support for the rapid modeling of aircraft platform model.(3)As the unstandardized interface,the existing aircraft model can only be assembled with limited airborne equipment model providing by simulation system,it cannot achieve the automatic assembling of airborne equipment model.Therefore,a aircraft equipment model interface specification and an airborne equipment model automatic assembling technology based on configuration files are put forward.It automatically assembles the corresponding airborne equipment model by parsing the assembling configuration files and then loads the on-board device model interface into the aircraft platform model automatically according to the standardized on-board device model interface specification,thus it effectively solves the problem of new / old on-board equipment models assembling.Based on the above research results,a generic aircraft model generating system is designed and implemented.The synthetic test shows that the system can generate the configuration file according to the parameter information which is filled in by users,and generate the corresponding model according to the files in which the interface follows the RUM reusable model developing specification and has good reusability,meeting the application requirements of rapid generation of aircraft model in military simulation.