水上电动飞机浮筒设计及起飞滑行

doi:10.7527/S1000-6893.2020.24590

Abstract

Abstract: The law of resistance changes in the low-speed taxiing phase of the seaplane during take-off is highly important for the plane design. Whether the maximum pull required for the normal take-off of the electric seaplane matches the existing electric propulsion system has become the key to the aircraft modification design. The design for the longitudinal instability caused by the large water resistance of the reference buoy is first optimized, significantly improving the hydrodynamic performance of the buoy. Based on the Volume of Fluid (VOF) model in Fluent, numerical simulations of the mechanical characteristics of the hydroelectric aircraft during the take-off taxiing phase are then performed, mainly analyzing the law of attitude changes, resistance changes and flow field characteristics at different speeds. Finally, the electric propulsion system power required at the "resistance peak" node is verified and calculated. The existing device satisfies the power requirements for the take-off. The actual take-off roll test is compared with the simulation results, revealing that the changes in mechanical characteristics are essentially identical. With the error within 15%, the feasibility of the simulation calculation is verified, providing reference for the research and design of electric seaplanes.

Key words: electric seaplanes, float optimization, neural networks, two-phase flow, flight tests

CLC Number:

V271.5

ZHAO Lijie, TIAN Mengwei, LI Jingkui, WANG Mingyang, LIU Da. Float design and take-off taxiing of electric seaplanes[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2021, 42(3): 624590-624590.

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Float design and take-off taxiing of electric seaplanes

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