Investigation of propeller aerodynamic loads under oblique inflow conditions with varying blade numbers

Xiao Tian; Kun Zhang; Wenhui Yan

doi:10.1117/12.3032604

16 August 2024 Investigation of propeller aerodynamic loads under oblique inflow conditions with varying blade numbers

Xiao Tian, Kun Zhang, Wenhui Yan

Proceedings Volume 13218, First Aerospace Frontiers Conference (AFC 2024); 132181E (2024) https://doi.org/10.1117/12.3032604
Event: First Aerospace Frontiers Conference (AFC 2024), 2024, Xi’an, China

Abstract

This establishes a mathematical model rooted in blade element-momentum theory, to accurately predict propeller aerodynamic loads under oblique inflow conditions. Leveraging this model, we achieve rapid computa-tion of propeller aerodynamic loads. High-precision CFD methods verified the aerodynamic load calculation procedures of the propeller under different inflow angles, and the calculation errors of procedures were all within 10%. Under the same oblique flow angle condition, the aerodynamic load change rules on propellers with different blade numbers were analyzed. The calculation results show that the pulsation amplitude of the bending moment and tangential force of the single propeller blade increases with the number of blades. In addition, the max value of the bending moment and tangential force of the propeller increase with the number of blades within a small fluctuation range. The number of fluctuations in a rotational cycle is the same as the number of blades.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xiao Tian, Kun Zhang, and Wenhui Yan "Investigation of propeller aerodynamic loads under oblique inflow conditions with varying blade numbers", Proc. SPIE 13218, First Aerospace Frontiers Conference (AFC 2024), 132181E (16 August 2024); https://doi.org/10.1117/12.3032604

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