 | James Edward Henry Gordon - 1884 - 350 pages
...horse-power being developed at any moment by each cylinder of an engine is given by the formula — where — S — Length of stroke in feet. R = Number of revolutions per minute. A = Area of piston in square inches. P = Mean pressure on the piston during the whole stroke in pounds... | |
 | Alan Bagot - 1885 - 338 pages
...as follows : — A = area of piston in square inches. p = average steam pressure in cylinder in Ibs. per square inch. s = length of stroke in feet. R = number of revolutions per minute, r = „ „ second. The indicated horse-power is — 2 APRS 33,0000 __ 2 APrs 550 One British horse-power=... | |
 | 1886 - 574 pages
...1-57, the lorse-powcr may be obtained by the fcrmtt 2 SRAP np = — — — , " •!'! l ml t where S = length of stroke in feet, R = number of revolutions per minute, A = area of piston m square inches, P = mean pressure in cylinder. Then, in the first instance : 5... | |
 | Denison Olmsted - 1891 - 496 pages
...cylinder of an engine, having given— P = pressure upon the piston in pounds per square inch. tV = length of stroke in feet. R — number of revolutions...stroke is S feet. Thus the work done in each stroke is 5 AP foot-pounds. Since there are two strokes for each revolution, the number of strokes per minute... | |
 | Thomas J. Foster - 1891 - 444 pages
...Diameter of piston in inches. " P = Average pressure of steam in Ibs. per eq. in. in cylinder. • ** S = Length of stroke in feet. " R = Number of revolutions per minute. Then, indicated HP = • 2APRS 33,000 EXAMPLE.— Find the indicated horsepower of an engine having... | |
 | 1893 - 528 pages
...Area of piston In square Inches. P = Average pressure of steam In Ib. per square Inch In cylinder. S = Length of stroke In feet. R = Number of revolutions per minute. Indicated horse power = 2 А That Is, to flnd the I- HP: Multiply the area of cylinder In Inches by... | |
 | 1905 - 192 pages
...of one cubic foot of steam of pressure at beginning of compression, W c w c v t = clearance space, S = length of stroke in feet, R = number of revolutions per minute. STEAM PER HORSE POWER PER HOUR CALCULATED FROM THE DIAGRAMS WITHOUT KNOWING THE HORSE POWER, NUMBER... | |
 | Otto Luhr - 1913 - 982 pages
...as follows : cXAXS R* XD* W = weight of rim of wheel in pounds. A = area of piston in square inches. S = length of stroke in feet. R = number of revolutions per minute. D — outside diameter of wheel in feet. c = 10,000,000 to 15,000,000, on the average 12,000,000. Example.... | |
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S = length of stroke in feet. R = number of revolutions per minute. 