The design of marine engines and auxiliaries (1916)
Bragg, Edward Milton, b. 1874 · New York, D. Van Nostrand Co. · leaf 128
lving as many terms as there are cranks. Primary forces disappear if (i) - {Ml cos ^ -f M2 cos 5 + M3 cos C + • • • ) = o.r (2) - {Ml sin ^ + M2 sin ^ + M3 sin C + • • • ) = o. ENGINE BALANCING 113 Primary couples disappear if (3) - {Miai cos A + Moo-i cos B + if 303 cos C +•••)= o-r (4) - (MiOi… … Fig. 61. Secondary couples disappear if r V (7) : - (Miflicos 2 A -\-M2a2 cos 2 B+M^as cos 2 C+/ r r V- (8) - - (MiGTi sin 2 A + Moai sin 2 5+M3fl3 sin 2 C+ )=o.) = o. V = linear velocity of crank pin.r = radius of crank-pin circle./ = length of connecting rod between centers.Ml, M2, M3, etc. =…
Marine engines
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