仿生全翼式太阳能无人机气动数值模拟

doi:10.7527/S1000-6893.2015.0038

Abstract

Abstract:

Based on solar-powered unmanned aerial vehicle (UAV) of high altitude, aerodynamic numerical simulation is carried out for a bionic full-wing typical solar-powered UAV. First, typical low Reynolds wing is calculated and verified by Reynolds-average Navier-Stokes numerical simulation method, which is based on modified laminar kinetic energy model. Second, design features of bionic full-wing typical solar-powered UAV are reviewed. Third, the basic aerodynamic performance of UAV is simulated by numerical simulation method. Finally, directional-lateral performance and rudder efficiency of UAV are calculated and analyzed to gain more comprehensive aerodynamic performance. The research shows that this bionic full-wing typical solar-powered UAV has complex low Reynolds flow features (laminar separation, transition, turbulence reattachment and so on), small flow interference for parts, high basic aerodynamic performance (cruise lift-drag-ratio is greater than 34, the longitudinal static stability is about 8%), static stable directional-lateral performance and great rudder efficiency, and the bionic full-wing type is a promising configuration.

Key words: bionic full-wing type, solar-powered UAV, numerical simulation, low Reynolds, laminar kinetic energy model

CLC Number:

V211.3

GAN Wenbiao, ZHOU Zhou, XU Xiaoping. Aerodynamic numerical simulation of bionic full-wing typical solar-powered unmanned aerial vehicle[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2015, 36(10): 3284-3294.

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Aerodynamic numerical simulation of bionic full-wing typical solar-powered unmanned aerial vehicle

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