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Journal of Projectiles, Rockets, Missiles and Guidance >

2025 , Vol. 45 >Issue 6: 1098 - 1105

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2025.06.018

Academic article

Study on Aerodynamic Characteristics and Noise Level of Biplane Flapping Wings

  • TIAN Siyuan ,
  • SHI Yongbin ,
  • TONG Jing ,
  • BU Yuepeng ,
  • ZHANG Yang ,
  • REN Kai
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  • Xi’an Modern Control Technology Research Institute,Xi’an 710065,Shaanxi,China

Received date: 2024-10-31

  Online published: 2026-01-24

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Abstract

The flapping-wing projectile aircraft has garnered significant attention in modern intelligent warfare due to its distinctive high-lift and low-noise performance.The flapping-wing projectile aircraft can address the stall and unstable flow issues of traditional micro unmanned aerial vehicles at large wing angles of attack.In light of the advantages of this aircraft,this paper employs the large eddy simulation method,through the dynamic mesh technology and the FW-H equation,to establish an aerodynamic/noise hybrid numerical simulation approach for bionic double-wing flapping,and conducts research on the high-lift mechanism and noise intensity of the double-wing flapping.By simulating the vortex structure of the flapping wing flow field,this paper explores the generation principles of the high-lift mechanism and stable flow phenomenon at large angles of attack during flapping.The study discovers that the spanwise vortex has a stabilizing effect on the flow at large angles of attack,capable of maintaining the high lift for 0.18 times the flapping period.The flow field is in a relatively stable state.The noise intensity at a distance of 10 times the chord length from the flapping center can reach up to 85dB,demonstrating favorable aerodynamic and noise intensity characteristics.

Key words： large eddy simulation; flapping-wing; aerodynamic characteristics; aeroacoustics characteristics

Cite this article

TIAN Siyuan , SHI Yongbin , TONG Jing , BU Yuepeng , ZHANG Yang , REN Kai . Study on Aerodynamic Characteristics and Noise Level of Biplane Flapping Wings[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2025 , 45(6) : 1098 -1105 . DOI: 10.15892/j.cnki.djzdxb.2025.06.018

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