The steam engine and turbine; a text-book for engineering colleges by Heck Robert Culbertson Hays 1870-

Author:Heck, Robert Culbertson Hays, 1870-
Language: eng
Format: epub
Tags: Steam-engines, Steam-turbines
Publisher: New York, D. Van Nostrand company
Published: 1911-03-25T05:00:00+00:00

V O

Fig. 164. — The Instantaneous Center of Rotation.

For the point W only the second of these two relations need be used, as the direction of v was part of the data: and we have

t;: vo: : PW : PC (165)

For any other point as E, we first draw a direction line for ve, and

then find its value by

t^: ro : : PE : PC (166)

A practical disadvantage of this method is that it involves a lot of troublesome graphical work, in the drawing of long lines to get P, and in satisfying the proportion (165) or (166). A much more convenient

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