Integrated Design And Software Development Of Thermal Protection System Of Thermal Insulation Tile Type

With the development and maturity of aerospace technology,reentry vehicle are receiving more and more attention and favor because of their advantages such as multiple uses and low launch costs.Compared with single-use spacecraft,reentry vehicle will be subjected to strong heat flow loads when returning to the atmosphere,which greatly threatens the load bearing structure and internal instrument safety of the aircraft.Therefore,the design of the thermal protection system is the key factor that determines the success of the reentry aircraft design.At present,thermal protection tile type thermal protection system on a large-area of aircraft is more adopted,i.e,affixing high-temperature insulation tiles on the surface of an aircraft.Generally,different parts of the reentry aircraft will bear different forces and thermal loads.Therefore,in order to meet the thermal protection requirements while reducing the weight of the thermal protection system as much as possible,it is necessary to distribute appropriate materials in different heated areas and design the whole vehicle thermal protection tile thickness distribution.This paper first analyzes a series of problems that are often encountered during the design of traditional thermal protection systems,and proposes aerodynamic heat treatment methods for the main problems;describes the heat transfer principles involved in the thermal insulation layer;and then establishes simplified Heat transfer model.Subsequently,the realization principle of the thickness design function of the heat-resistant tile is introduced,and the corresponding mathematical model is established.In order to integrate algorithms and functions,this paper uses C ++ and Python as development languages,embeds the Open GL graphics interface into the MFC framework,develops a visual interface with interactive functions,and implements a pre-and post-processing module specifically designed for the thermal protection system design process.Then Isight’s optimization module and Abaqus’ solver were called as calculation modules,which were connected in series with the pre-and post-processing modules to complete an automated thermal protection system design software.Finally,the effectiveness and practicability of the software are verified by simulation tests.