Applying frequency-domain unsteady lifting-line theory to time-domain problems

Hugh J. A. Bird; Kiran Ramesh

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arXiv · 2105.05679

Applying frequency-domain unsteady lifting-line theory to time-domain problems

Hugh J. A. Bird·Kiran Ramesh

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Abstract

Frequency-domain unsteady lifting-line theory is better developed than its time-domain counterpart. To take advantage of this, this paper transforms time-domain kinematics to the frequency domain, performs a convolution and then returns the results back to the time-domain. It demonstrates how well-developed frequency-domain methods can be easily applied to time-domain problems, enabling prediction of forces and moments on finite wings undergoing arbitrary kinematics.

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Hugh J. A. Bird, Kiran Ramesh. 2021-05-12. Applying frequency-domain unsteady lifting-line theory to time-domain problems. https://arxiv.org/abs/2105.05679

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