Aeroplane construction and operation; including notes on aeroplane design and aerodynamic calculation, materials, etc. A comprehensive illustrated manual of instruction for aeroplane constructors, aviators, aero-mechanics, flight officers and students. Adapted either for schools or home study (1918)
Rathbun, John B · Chicago : Stanton and Van Vliet Co. · leaf 127
r than thosewith the heavier camber of 1/7, and the negative drifts (d)are correspondingly smaller. All of the drag due to thelower surface, point to the left (D), and hence producehead resistance to flight. The drag to the rear of thecenter of the upper surface are the same. In front ofthe upper… … Fig. 13. Direction of Drag Over Different Portions of Circular ArcAerofoils. Distribution on Practical Wings. With the exceptionof the bird wing, the distributions have been given forthin plates that are of little value on an aeroplane. Theydo not permit of strong structural members for carry-ing…
Airplanes
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