Structural and aerodynamic analysis of a large-scale advanced propeller blade

Yamamoto, Osamu; August, Richard

doi:10.2514/3.23487

Cited by 17 publications

(7 citation statements)

References 7 publications

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“…Multiple propeller design or simulation tools were developed and published, e.g., XROTOR [3], QPROP [4], and JavaProp [5], to name only the most prominent. However, loads during operation can lead to significant deformations, impacting aerodynamic performance, as shown by Sodja et al [6] or Yamamoto and August [7]. Elastic deformations can reduce (or increase) the thrust at a given rotational speed.…”

Section: Introductionmentioning

confidence: 99%

On the influence of elasticity on propeller performance: a parametric study

et al. 2023

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The aerodynamic performance of propellers strongly depends on their geometry and, consequently, on aeroelastic deformations. Knowledge of the extent of the impact is crucial for overall aircraft performance. An integrated simulation environment for steady aeroelastic propeller simulations is presented. The simulation environment is applied to determine the impact of elastic deformations on the aerodynamic propeller performance. The aerodynamic module includes a blade element momentum approach to calculate aerodynamic loads. The structural module is based on finite beam elements, according to Timoshenko theory, including moderate deflections. Several fixed-pitch propellers with thin-walled cross sections made of both isotropic and non-isotropic materials are investigated. The essential parameters are varied: diameter, disc loading, sweep, material, rotational, and flight velocity. The relative change of thrust between rigid and elastic blades quantifies the impact of propeller elasticity. Swept propellers of large diameters or low disc loadings can decrease the thrust significantly. High flight velocities and low material stiffness amplify this tendency. Performance calculations without consideration of propeller elasticity can lead to decreased efficiency. To avoid cost- and time-intense redesigns, propeller elasticity should be considered for swept planforms and low disc loadings.

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Section: Introductionmentioning

confidence: 99%

On the influence of elasticity on propeller performance: a parametric study

et al. 2023

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“…to transonic, the blades experience significant and complex deformations. 3,4 Ideally, numerical simulations of open-rotor aiming at assessing aerodynamic and acoustic characteristics should account for these blade deformations. 5,6 Yet, calculations on different operating points are often carried out considering the same geometry.…”

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confidence: 99%