Aeroelastic analysis of multibladed hingeless rotors in hover

Cho, Maeng Hyo; Lee, In

doi:10.2514/3.12990

Cited by 11 publications

(2 citation statements)

References 16 publications

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“…This agreement is due to the use of the same profile drag coefficient in both aerodynamic models. However, the difference between the results at high collective pitch angles appears since the two-dimensional aerodynamic model overestimates induced drag (Cho and Lee, 1995). Also, it is shown that the torsional deflections predicted by the present method are about two-thirds of those given by the two-dimensional theory.…”

Section: Article In Pressmentioning

confidence: 52%

Aeroelastic analysis of helicopter rotor blade in hover using an efficient reduced-order aerodynamic model

Shahverdi

Nobari

Behbahani–Nejad

et al. 2009

Journal of Fluids and Structures

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Section: Article In Pressmentioning

confidence: 52%

Aeroelastic analysis of helicopter rotor blade in hover using an efficient reduced-order aerodynamic model

Shahverdi

Nobari

Behbahani–Nejad

et al. 2009

Journal of Fluids and Structures

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“…Because the simplicity and low computational cost of VLMs increase their applicability, they are still being widely used in many aviation projects instead of CFD methods, which are far more demanding [31]. VLMs have helped researchers investigate the influences of rotorcraft configuration and flying environment on its aerodynamic performance [52], noise generation [55,86], flight control [87], and aeroelasticity response [88]. (…”

Section: Vortex Lattice Methodsmentioning

confidence: 99%

Review of vortex methods for rotor aerodynamics and wake dynamics

et al. 2022

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Electric vertical take-off and landing (eVTOL) aircraft with multiple lifting rotors or prop-rotors have received significant attention in recent years due to their great potential for next-generation urban air mobility (UAM). Numerical models have been developed and validated as predictive tools to analyze rotor aerodynamics and wake dynamics. Among various numerical approaches, the vortex method is one of the most suitable because it can provide accurate solutions with an affordable computational cost and can represent vorticity fields downstream without numerical dissipation error. This paper presents a brief review of the progress of vortex methods, along with their principles, advantages, and shortcomings. Applications of the vortex methods for modeling the rotor aerodynamics and wake dynamics are also described. However, the vortex methods suffer from the problem that it cannot deal with the nonlinear aerodynamic characteristics associated with the viscous effects and the flow behaviors in the post-stall regime. To overcome the intrinsic drawbacks of the vortex methods, recent progress in a numerical method proposed by the authors is introduced, and model validation against experimental data is discussed in detail. The validation works show that nonlinear vortex lattice method (NVLM) coupled with vortex particle method (VPM) can predict the unsteady aerodynamic forces and complex evolution of the rotor wake.

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Aeroelastic analysis of bearingless rotors with a composite flexbeam

Lim

Lee

2009

Composite Structures

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Aeroelastic analysis of multibladed hingeless rotors in hover

Cited by 11 publications

References 16 publications

Aeroelastic analysis of helicopter rotor blade in hover using an efficient reduced-order aerodynamic model

Aeroelastic analysis of helicopter rotor blade in hover using an efficient reduced-order aerodynamic model

Review of vortex methods for rotor aerodynamics and wake dynamics

Aeroelastic analysis of bearingless rotors with a composite flexbeam

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