Research on the Influence of Chemical Combustion on the Modeling of Infrared Decoy

Infrared(IR) decoy is a direct factor that reduces hit rate of IR guided missile, therefore, establishing an accurate IR decoy radiation model plays an important role in IR guidance algorithm. However, current CFD model of infrared decoy does not take the influence of infrared pyrotechnics combustion into consideration, directly declining the model accuracy theoretically. Aiming this disadvantage, the paper establishes a more accurate IR decoy simulation model, by adding chemical combustion phase based on the enhanced DPM IR decoy model. Experimental results show that the simulation accuracy of new model's graphics characteristics and radiation characteristics is obviously improved compared to the traditional model, by adding chemical combustion phase.