Download or read book Collection and Analysis of Hinge-moment Data on Control-surface Tabs written by Paul E. Purser and published by . This book was released on 1947 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various wind-tunnel data on the hinge-moment characteristics of control-surface tabs have been collected and analyzed. The data, all of which are for plain unbalanced tabs, were obtained from force tests of models in two- and three-dimensional flow and from pressure-distribution measurements on models in two-dimensional flow. Some data that show the effects of Mach number on tab hinge moments for representative conventional and NACA 6-series airfoil sections are presented.