Simulation of Conceptual Designs of a Three-Surface Stealth Strike Fighter

  • Kuizhi, Yue ;
  • ShiChun, Chen ;
  • Wenlin, Liu ;
  • Dazhao, Yu
  • Received : 2014.07.08
  • Accepted : 2014.11.07
  • Published : 2014.12.30


A conceptual design of a three-surface strike fighter was studied and stealth performance was taken into account to enhance survivability and battle effectiveness. CATIA was used to design the aircraft's three-dimensional prototype model and the weapon carriage arrangement was also studied. The aircraft's RCS characteristics and distributions under X, S, C, and L bands were simulated using the RCSPlus software, which is based on the PO method. Pressure and velocity distributions of the flow field were also simulated using CFD. A turbulence model was based on standard $k-{\varepsilon}$ function and N-S functions were used during the CFD computation. Lift coefficients, drag coefficients, and lift-to-drag ratio were obtained by aerodynamic simulation. The results showed that: (1) the average value of head-on RCS between ${\pm}30^{\circ}$ is below -3.197 dBsm, and (2) the lift coefficient is 0.34674, the drag coefficient is 0.04275, and the lift-to-drag ratio is 8.11087 when the attack angle is $2.5^{\circ}$.


conceptual design;aircraft;three surfaces;stealth;CFD


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