Li, Y.F., Yang, Q.Z. and Sun, Z.Q. (2011) Design and Aerodynamic Performance Study of Su-per-Ellipse S-Shaped Inlet. Computer Simulation, 28, 82-85. (In Chinese)

has been cited by the following article:

• TITLE: Numerical Investigation of Gust Response for a HALE Blended-Wing-Body UAV S-Duct Inlet

  AUTHORS: Zitong Huang, Yun Liu, Guoyi He, Zhixin Zhan

  KEYWORDS: HALE UAV, S-Duct Inlet, Gust Response, Unsteady Aerodynamics

  JOURNAL NAME: Advances in Aerospace Science and Technology, Vol.11 No.2, April 22, 2026

  ABSTRACT: The dorsal S-duct inlet of a HALE blended wing body UAV faces complex unsteady disturbances during operation. This study numerically investigates its aerodynamic response to gust excitations. Using CFD, we analyzed the effects of angle of attack, gust ratio, frequency, and gust type on total pressure recovery and distortion index. Results reveal significant hysteresis in performance recovery post-gust. Increasing angle of attack amplifies response fluctuations, with recovery variation reaching 4.37% at 8˚ AoA. Gust ratio governs response magnitude, while frequency modulates it through spatial wavelength effects. Sinusoidal gusts induce more intense cyclical variations than 1-cos gusts. The exit flow field evolution shows strong phase-coupling with gust excitation. These findings elucidate the unsteady flow mechanisms and provide essential insights for dynamic stability evaluation of such inlets under realistic atmospheric conditions.