Reseach on Hierarchical Design Method of Equivalent Target for Typical Combat Aircraft
As a high-value military target,it is difficult to directly conduct damage research on real aircraft.Designing equivalent targets to replace real targets in damage tests and simulation research are important means for target vulnerability and damage.A target design method is proposed based on the damage characteristics and usage requirements of equivalent objects,with a focus on the"physical and functional"damage equivalent tecnology of aircraft components/subsystems under the threat of fragments.On this basis,a detailed design process for equivalent targets of aircraft is established by comprehensively considering the equivalence of the target's internal and external environment,as well as various factors such as processing and transportation.Then,based on the proposed method,an equivalent design target is carried out for the radar antenna cover of the early-warning-aircraft(EWA),and ground static explosion damage tests are carried out on the equivalent components.After verifying the accuracy of the simulation method with the test results,the ballistic limit velocity and corresponding critical penetration energy thresholds of diffrerent areas for the typical fragment hitting radar antenna cover are determined through impact finite element simulation,the rationality and usability of the proposed equivalent target design method is verifyed.The equivalent target design method proposed can provide support for the inspection and evaluation of the damage ability of air defense weapons and ammunition,the formulation of aircraft target damage standards,and joint combat training activitis.
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