Wind tunnel testing of Otto Lilienthal's production aircraft from 1893

Abstract

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Flying Qualities of Otto Lilienthal’s Large Biplane

“…Earlier DLR, German Aerospace Center wind tunnel tests demonstrated the influence of the permeability of the fabric, which has been woven on an original loom using a formula that was developed based on a careful analysis of a fabric sample taken from an original glider wing [10]. The lower wing of the Large Biplane is the exact same size as the one used in Lilienthal's patented monoplane glider.…”

“…The goal is to further the understanding of Lilienthal's achievements as one of the greatest of the precursors, as Jakab [9] calls him. The current work is a continuation of the authors' investigation into its monoplane predecessor presented in [10,11].…”