WANG Qun 1，2 ， YANG Sheng-nan 1，2 ， LU Hao-hao 1，2 ， DENG Hong-wei 1，2 ， CHEN Han-ze 1，2.Radar Stealth Shaping Design for Cone of Integrated Afterburner with Axisymmetric Nozzle[J].航空发动机,2025,51(1):65-69
Radar Stealth Shaping Design for Cone of Integrated Afterburner with Axisymmetric Nozzle
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Key Words:integrated afterburner  cone  radar stealth shaping  radar cross section  aeroengine
Author NameAffiliation
WANG Qun 1，2 ， YANG Sheng-nan 1，2 ， LU Hao-hao 1，2 ， DENG Hong-wei 1，2 ， CHEN Han-ze 1，2 1.AECC Shenyang Engine Research Institute， 2.National Key Laboratory of Aerospace Power System and Plasma Technology： Shenyang 110015， China 
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Abstract:In order to obtain the influence law of radar stealth shaping angle of integrated afterburner cone to aeroengine backward radar cross section (RCS), and support the integrated afterburner radar stealth shaping design. The RCS calculation model of an engine rear cavity with axisymmetric nozzle and integrated afterburner was constructed, the shooting and bouncing ray (SBR) method and physical theory of diffraction (PTD) method were used in electromagnetic scattering characteristics simulation, the influences of the cone angle on aeroengine backward RCS were analyzed. The simulation results show that radar stealth shaping for the cone of the integrated afterburner can significantly reduce aeroengine backward RCS, the mean value of aeroengine backward RCS from 0° to 30° can be reduced by more than 30%; when assembled with axisymmetric nozzle, the cone angle of the cone of the integrated afterburner should not be selected in the range of 70° to 100°; when the cone angle is less than 62°, the integrated afterburner has a better radar stealth effect.
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