Truckenbrodt, E.: Die Berechnung der Profilform bei vorgegebener Geschwindigkeitsverteilung (The Calculation of the Profile Shape from Specified Velocity Distribution) Ingenieur-Archiv, Bd. and Von Doenhoff, Albert E.: Theory of Wing Sections. (Supersedes NACA WR L-560.)Ībbott, Ira H. and Stivers, Louis S., Jr.: Summary of Airfoil Data. NACA WR L-345, 1939 (formerly, NACA ACR).Ībbott, Ira H. Jacobs, Eastman N.: Preliminary Report on Laminar-Flow Airfoils and New Methods Adopted for Airfoil and Boundary-Layer Investigations. Theodorsen, Theodore: Theory of Wing Sections of Arbitrary Shape. and Greenberg, Harry: Tests of Related Forward-Camber Airfoils in the Variable-Density Wind Tunnel. and Pinkerton, Robert M.: Tests in the Variable-Density Wind Tunnel of Related Airfoils Having the Maximum Camber Unusually far Forward. and Pinkerton, Robert M.: The Characteristics of 78 Related Airfoil Sections from Tests in the Variable-Density Wind Tunnel. and Miller, Elton W.: Model Tests with a Systematic Series of 27 Wing Sections at Full Reynolds Number. National Advisory Committee for Aeronautics: Aerodynamic Characteristics of Aerofoils. National Advisory Committee for Aeronautics: First Annual Report of the National Advisory Committee for Aeronautics. This process is experimental and the keywords may be updated as the learning algorithm improves. These keywords were added by machine and not by the authors. This empirical approach, which involved modifying the geometry of an existing airfoil, culminated in the development of the four- and five-digit-series airfoils in the mid 1930’s (Refs. This series was significant because it represented a systematic approach to airfoil development as opposed to earlier, random, cut-and-try approaches. Munk, was tested in the Langley Variable-Density Tunnel (Ref. The first series of airfoils, designated “M sections” for Max M. Shortly thereafter, the development of airfoils by the NACA was initiated at the Langley Memorial Aeronautical Laboratory (Ref. By 1920, the Committee had published a compendium of experimental results from various sources (Ref. In its first Annual Report to the Congress of the United States, the NACA called for “the evolution of more efficient wing sections of practical form, embodying suitable dimensions for an economical structure, with moderate travel of the center of pressure and still affording a large range of angle of attack combined with efficient action” (Ref. From its very beginning, the National Advisory Committee for Aeronautics (NACA) recognized the importance of airfoils as a cornerstone of aeronautical research and development.
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