The steam engine and turbine; a text-book for engineering colleges (1911)
Heck, Robert Culbertson Hays, 1870- · New York, D. Van Nostrand company · leaf 394
a cer-tain maximum velocity of steam flow, say 200 ft. per sec. — see § 42 (e)for the method of determining this width. The idea is that when thepiston has its highest velocity, practically equal to the constant vq ofthe crank pin, the current of steam flowing through the full port at200 ft. per… … Fig. 237. — Stroke-line Diagrams from Fig. 236. of opening, by the valve, that corresponds to a maintained speed of200 ft. per sec. for the steam. To get an ordinate at any piston posi-tion, multiply the port width by the ratio of actual piston velocity v(as in Fig. 166) to crank-pin velocity VqI…
Steam-engines · Steam-turbines
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