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. 2019 Apr 17;19(8):1831. doi: 10.3390/s19081831

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Dynamic balance of the forces (a) Drone geometrical balance of the forces; (b) Cl vs. Alpha (=angle of attack, $α_{a t t}$ diagram for Eppler E838 aerofoil.