This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ...purposes, are constructed of 60, 90, 130, and 220 B.H.P. respectively. The weight in lbs. per nominal B.H.P., including all accessories and also radiator and cooling water, is about 4J lbs. for all types. examination of fig. 35, the crankshaft angle between consecutive impulses being--j--= 77. It has already been ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ...purposes, are constructed of 60, 90, 130, and 220 B.H.P. respectively. The weight in lbs. per nominal B.H.P., including all accessories and also radiator and cooling water, is about 4J lbs. for all types. examination of fig. 35, the crankshaft angle between consecutive impulses being--j--= 77. It has already been pointed out that in the ten-cylindered Anzani radial engine the two groups each of five cylinders act upon crank-pins at 180, and work upon the four-stroke cycle; working impulses accordingly occur at equal angular intervals of 2 x 360------=72 of crankshaft rotation, i.e. more frequently than with the above arrangement, though fewer cylinders are employed. The eighteen-cylindered 600 B.H.P. unit is in reality two separate nine-cylindered engines for use in large air-craft fitted with double propellers; the engines are connected together by a gear-box in such manner that either engine may, at will, drive either or both of the propellers; each engine, moreover, is a complete power unit, with its own radiator, pumps, magnetos, and carburettors.1 The propellers are about 13 feet in diameter, and 1 For an illustrated account, see The Engineer for 31st July 1914. Fig. 35.--Firing order of the fourteen-eylinder Salmson engine. are arranged to rotate in opposite directions at 900 revolutions per minute. The weight of one of these 600 B.H.P. combinations is as follows: --Two engines; each 980 lbs... 1960 lbs. One connecting gear-box.... 500 Two sets of radiators and gear. 400 Total.. 2860 lbs. or---=4-8 lbs. per nominal B.H.P. 600 x The Dudbridge Iron Works, Ltd., give the weight--as mentioned in the Table--as about 4J lbs. per B.H.P. for all the Salmson types; this is a very low figure for a water-cooled design of engine. Piston speed is me...
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