Open Access
Numerical method to calculate the induced drag or optimum loading for arbitrary non-planar aircraft
James A. Blackwell
- Vol. 405, pp 49
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In this article, a simple unified numerical method applicable to non-planar subsonic aircraft has been developed for calculating either the induced drag for an arbitrary loading or the optimum aircraft loading which results in minimum induced drag.Abstract:
A simple unified numerical method applicable to non-planar subsonic aircraft has been developed for calculating either the induced drag for an arbitrary loading or the optimum aircraft loading which results in minimum induced drag. The method utilizes a vortex lattice representation of the aircraft lifting surfaces coupled with the classic equations and theorems for computing and minimizing induced drag. Correlation of results from the numerical method with non-planar solutions obtained from other more complex theories indicates very good agreement. Comparison of the induced-drag computations using the numerical method with experimental data for planar and non-planar configurations was also very good.read more
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References
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A finite-step method for calculation of theoretical load distributions for arbitrary lifting surface arrangements at subsonic speeds
TL;DR: Load distribution calculations for subsonic compressible flow of arbitrary wings and lifting surfaces were performed in this paper for the case of a single wing and a single lifting surface with arbitrary lifting surface.
Book
A numerical solution for the minimum induced drag, and the corresponding loading, of nonplanar wings
TL;DR: User manual for computer program 55VD for computation of minimum induced drag and load distribution of nonplanar wings.