| Citation: | Yu Yang, Yu Jinlu, Zhang Xiaobo, et al. Research on the effect of leading edge shape on the performance of variable inlet guide vanes[J]. Journal of Aerospace Power, 2026, 41（8）：20240784 doi: 10.13224/j.cnki.jasp.20240784
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To optimize the aerodynamic performance of variable-camber guide vanes with leading-edge modifications, the circular leading edges were redesigned into elliptical and continuously curved leading edges. Numerical simulations were conducted to analyze and compare the performance of these modified vanes under various operating conditions. The results showed that the modified leading edges generated lower suction peak intensity on the leading edge, leading to better boundary layer flow and consequently lower total pressure loss. The impact of leading-edge shape varied with changes in the rear leaf deflection angle. At small deflection angles, the modified leading edge can effectively increase the range of low-loss attack angles. At large deflection angles, the optimization effect of the modified leading edge was significant at positive attack angles. The total pressure loss of the modified leading-edge guide vane was reduced by up to 32.6% at an incoming attack angle of 4°, while the effect was less impactful at negative attack angles, with a maximum reduction of 9.9% at an incoming attack angle of −4°. The results indicate that the modification of the leading edge can effectively enhance the performance of variable-camber guide vanes.
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