Vehicles of the Air; a Popular Exposition of Modern Aeronautics, With Working Drawings
Vehicles of the Air; a Popular Exposition of Modern Aeronautics, With Working Drawings
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In our eReader you can find the full English version of the book. Read Vehicles of the Air; a Popular Exposition of Modern Aeronautics, With Working Drawings Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Vehicles of the Air; a Popular Exposition of Modern Aeronautics, With Working Drawings
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To quickly assess the difficulty of the text, read a short excerpt:
This speed, as is well under- stood by engineers, is only secondarily a matter of rotational speed, it being primarily a matter of the speed of piston reciprocation. Now to increase to, say, twenty horsepower, the cylinder must be doubled in all of its linear dimensions — in both bore and stroke. In accordance with a well-known law of geometry, this cubes the weights and volumes, so would at first appear to cube the power, which would be the case if the speed of rotation were maintained. But, b...ecause of the piston speed being the limiting factor, it is neces- sary in the larger engine to reduce the rotational speed one-half to avoid increasing the piston speed.
The consequence is that though the weight is eight times as great as that of the smaller cylinder, the power developed is only four times as great, with the result that the. weight per given power is doubled.
On the other hand, if instead of increasing the dimensions of the small original cylinder the policy be adopted of duplicating this small cylinder — ranging four of them, for example, along a single crankcase and crankshaft— then the power is Digitized by Google 2 Z 2.
What to read after Vehicles of the Air; a Popular Exposition of Modern Aeronautics, With Working Drawings?
You can find similar books in the "Read Also" column, or choose other free books by Lougheed, Victor to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
This speed, as is well under- stood by engineers, is only secondarily a matter of rotational speed, it being primarily a matter of the speed of piston reciprocation. Now to increase to, say, twenty horsepower, the cylinder must be doubled in all of its linear dimensions — in both bore and stroke. In accordance with a well-known law of geometry, this cubes the weights and volumes, so would at first appear to cube the power, which would be the case if the speed of rotation were maintained. But, b...ecause of the piston speed being the limiting factor, it is neces- sary in the larger engine to reduce the rotational speed one-half to avoid increasing the piston speed.
The consequence is that though the weight is eight times as great as that of the smaller cylinder, the power developed is only four times as great, with the result that the. weight per given power is doubled.
On the other hand, if instead of increasing the dimensions of the small original cylinder the policy be adopted of duplicating this small cylinder — ranging four of them, for example, along a single crankcase and crankshaft— then the power is Digitized by Google 2 Z 2.
What to read after Vehicles of the Air; a Popular Exposition of Modern Aeronautics, With Working Drawings?
You can find similar books in the "Read Also" column, or choose other free books by Lougheed, Victor to read onlineMoreLess
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