which resulted in no great angular distortions. In view of these facts it was not considered desirable to investigate angular distortion for high angles of attack. PRELIMINARY ASSUMPTIONS. For the purpose of an illustrative example, the RAF-15 aerofoil was chosen as being tin. basis of most wing… … 9.25 and 66.5 per cent of the chord, respectively, from the leading edge. The characteristics for the RAF-15 wing were taken in accordance with tests3 made at the National Physical Laboratory, England. It will be noticed that the curves representing the loads on 'the front and rear spars normal to…
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