Aërial Locomotion, With a Few Notes of Progress in the Construction of An Aërodome
Aërial Locomotion, With a Few Notes of Progress in the Construction of An Aërodome
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Bottom view. 4. Top view so that there would be no tendency to a recovery of position, but the very re- verse. The pressure of the wind would tend to increase the tipping action and favor the production of oscillation and a tendency to upset. The lifting power of the wind upon a surface inclined at 10° is less than at 20°, and greater at 25° than 20°. The more the wings are opened out and the flatter they be- come, the more essentially unstable is the arrangement in the air.
Mow suppose the win...gs to be raised until they are nearly closed, or at all events till they make a small angle with the vertical (say 70° from the horizon- tal), then, if from any cause the cell should tip so as to elevate one wing (say to 75°) and depress the other (say to 65°), the lifting power of the wind will be increased upon the de- pressed wing and diminished on the elevated wing ; for the lifting power of the wind is greater at 65° than at 70° and less at 75°. Thus the moment a tipping action begins the pressure of the wind resists it, and an active force is invoked tending to restore the struc- ture to its normal position.
What to read after Aërial Locomotion, With a Few Notes of Progress in the Construction of An Aërodome?
You can find similar books in the "Read Also" column, or choose other free books by Cyrus Adler to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Bottom view. 4. Top view so that there would be no tendency to a recovery of position, but the very re- verse. The pressure of the wind would tend to increase the tipping action and favor the production of oscillation and a tendency to upset. The lifting power of the wind upon a surface inclined at 10° is less than at 20°, and greater at 25° than 20°. The more the wings are opened out and the flatter they be- come, the more essentially unstable is the arrangement in the air.
Mow suppose the win...gs to be raised until they are nearly closed, or at all events till they make a small angle with the vertical (say 70° from the horizon- tal), then, if from any cause the cell should tip so as to elevate one wing (say to 75°) and depress the other (say to 65°), the lifting power of the wind will be increased upon the de- pressed wing and diminished on the elevated wing ; for the lifting power of the wind is greater at 65° than at 70° and less at 75°. Thus the moment a tipping action begins the pressure of the wind resists it, and an active force is invoked tending to restore the struc- ture to its normal position.
What to read after Aërial Locomotion, With a Few Notes of Progress in the Construction of An Aërodome?
You can find similar books in the "Read Also" column, or choose other free books by Cyrus Adler to read onlineMoreLess
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