The boys' book of model aeroplanes : how to build and fly them : with the story of the evolution of the flying machine (1912)
Collins, Francis A. (Francis Arnold), b. 1873-, Morgan, Kewpie, inscriber. DSI · London : Eveleigh Nash · leaf 229
ferent from thoseon rectangles, circles, triangles, or ellipses;arched surfaces differ from planes, andvary among themselves according to thedepth of curvature; true arcs differ fromparabolas, and the latter differ amongthemselves; thick surfaces differ fromthin, and surfaces thicker in one… … THE WRIGHT BROTHERS STORY so that thousands of combinations arepossible in so simple a thing as a wing. We had taken aeronautics merely asa sport. We reluctantly entered upon thescientific side of it. But we soon foundthe work so fascinating that we weredrawn into it deeper and deeper. Twotesting…
Airplanes
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