Flying machines: practice and design. Their principles, construction and working (1909)
Kennedy, Rankin, d. 1917 · London [etc.] : The Technical Publishing Co., limited · leaf 97
82 FLYING MACHINES : is required to be brought to bear upon them by anyone attempting the design of a new machine. The evolution of the motor car was child's play compared with that of the flying machine ; the motor car is merely an assemblage of old, well-known, well-proved mechanical appliances.… … FIG. 37. — Diagram of Aeroplane and Fish-tail Propeller. problems, requiring the creation of new devices ; that is, real invention and real discoveries, not merely the com- bination of old and well-known appliances. As an instance of this, the Wright Brothers having found that the power required…
Flying-machines · Aeronautics
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