ements, question was raised |
|by other investigators not only as to the accuracy of his |
|figures, but even as to the existence of any tangential force at |
|all. Our experiments confirm the existence of this force, at Kitty|
|Hawk we spent much time in measuring the horizontal pressure on |
|our unloaded machine at various angles of incidence. |
| |
|has been changed to |
| |
|While our measurements differ considerably from those of |
|Lilienthal, Lilienthal was the first to discover this exceedingly |
|important fact, which is fully set forth in his book, "Bird |
|Flight the Basis of the Flying Art," but owing to some errors in |
|the methods he used in making measurements, question was raised |
|by other investigators not only as to the accuracy of his |
|figures, but even as to the existence of any tangential force at |
|all. Our experiments confirm the existence of this force. At |
|Kitty Hawk we spent much time in measuring the horizontal |
|pressure on our unloaded machine at various angles of incidence. |
+------------------------------------------------------------------+

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Orville Wright and Wilbur Wright

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