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Aviation History
1915
1915 - 0089.PDF
FEBRUARY 5, 1915. fjjffir\ TUITION BY MOONLIGHT.—From the original drawing by C. Fleming Williams. This charming picture depicts Mr. Rowland Ding of the Seaplane School, Windermere, giving lessons by moonlight over Lake Windermere— work unique to this special school. © ® Dr. Glazebrook on Stability. _ IN his second lecture on " Aerial Navigation " before the Royal institution last Saturday, Dr. R. T. Glazebrook said that the high degree of stability of the British aeroplanes now used in the war had l >een secured by measuring forces that deflected the machine and by securing complete control for the pilot through the exact adjustment c 'f the rudder, the vertical fins, and the form of the wings which ® ® might be flexible or fitted with movable flaps to resist pressure in certain directions. While stability depended much on the skill of the pilot, the skill required was much diminished in a stable machine. Automatic stability based on gyrosta'ic and other aids had not proved satisfactory, but inherent stability was attained through bringing counteracting forces to b:ar against gusts and) removing factors causing oscillation. 89
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