Resistance of Air and the Question of Flying: Experimental Lecture Read by Arnold Samuelson ... |
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Resistance of Air and the Question of Flying: Experimental Lecture Read by ... Arnold Samuelson No preview available - 2016 |
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according acute angle angle of incidence axis of abscissas balloon bird's body moves caused centre of air-pressure centre of gravity cloth coëfficient component concave plates concave wings Daniel Bernoulli diagram diminishes direction of flight distance duration dynamic equilibrium dynamical flight equal and opposite equal to zero exactly experimental lecture experiments falling bodies fastened flat body flying body force K formula forward motion front border front-border gliding plains horizontal forces Illustrierte Aeronautische inclined plain kite flyer Kress Langley latter laws of flying length lifting lifting force Lilienthal Lilienthal's meters per second model flyer move forward natural law nearly normal air-pressure normal pressure ordinates pennant plane plates principle propelling force proportional proved question resistance of air resistance of fluids resting air Samuelson showed shown slightly concave stable equilibrium straight line stroke stroke-velocity supporting plains surface thin plain velocity vertical weight wind wing flapping
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Page 12 - ... inches. The intensity of this force is therefore 250 pounds. 4. The wind strikes the vanes of the mill obliquely, just as the weight of the snow in the preceding problem was exerted obliquely to the roof, and a like result follows. The force of the wind is resolved into two components, one of which acts squarely against the vanes and is efficient for turning the mill; the other is a useless component, called a '