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An Improved Approximate Method for Calculating Lift Distributions Due to Twist

James C. Sivells

出版	National Advisory Committee for Aeronautics, 1951
URL	http://books.google.com.hk/books?id=jNzoSgAACAAJ&hl=&source=gbs_api

註釋

A new method is presented for calculating the lift distribution due to twist which gives a much closer approximation than the empirical method of Schrenk (NACA TM 948) and requires about the same amount of computing. The new method, based on lifting-line theory, makes use of the lift distribution due to angle of attack and takes into account the aspect ratio of the wing. Examples are presented for the four main types of twist: symmetrical, antisymmetrical, continuous, and discontinuous. The applicability of the method for swept wings is also presented.