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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 99

An illustration from 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, leaf 99
of an aspect ratio of 6, a speedof 50 miles per hour, weight = 2500 pounds, and wishto obtain the area that will give the most efficient surface(Least lift-drag ratio.) The equation can be now trans-posed so that the area = A==KyV^ On examinationof the table it will be seen that the greatest… … Wind Tunnel at Washington Navy Yard in Which the Air Circulates Con-tinuously Through a Closed Circuit. CHAPTER IV.EXPERIMENTAL LABORATORIES. Test Methods in General. As already explained, thebehavior of a body in an air stream cannot be predictedwith any certainty by direct mathematical…

Airplanes

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