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

Title & Authors
Simulation of Conceptual Designs of a Three-Surface Stealth Strike Fighter
Kuizhi, Yue; ShiChun, Chen; Wenlin, Liu; Dazhao, Yu;

Abstract
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 $\small{k-{\varepsilon}}$ 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 $\small{{\pm}30^{\circ}}$ 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 $\small{2.5^{\circ}}$.
Keywords
conceptual design;aircraft;three surfaces;stealth;CFD;
Language
English
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