临近空间箔条扩散及散射一体化建模方法研究OA

With the increasing maturity of space exploration technology,the safety of exploration aircraft has been put on the agenda.Integrating a mature passive jamming system into the protection system of near-space aircraft to maximize the protection of our own aircraft has become a current research hotspot.At present,in the research on chaff dispersion under the application background of aircraft,most experts at home and abroad choose to study dynamic modeling and scattering separately,without integrating the two for integrated research,which restricts the research on the multi-physics field simulation theory of chaff clouds.First,this paper uses the mature method applied in engineering to simulate the flow field environment of the aircraft.Based on the free molecular flow theory,a microscopic particle system with dynamic mesh optimization is established to realize the complete dispersion simulation of chaff.After completing the modeling and simulation of chaff cloud cluster dispersion,this paper uses the vector radiative transfer theory to conduct a relatively complete description and calculation of the radar scattering characteristics of chaff cloud clusters.Finally,this paper realizes the full-process chaff cloud cluster dispersion and jamming simulation in near-space conditions,obtains the dispersion and RCS characteristics of near-space chaff in the flow field,and provides support for the tactical application of chaff clouds in near-space.