The Screw Propeller: And Other Competing Instruments for Marine Propulsion
The book The Screw Propeller: And Other Competing Instruments for Marine Propulsion was written by author Albert Edward Seaton Here you can read free online of The Screw Propeller: And Other Competing Instruments for Marine Propulsion book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is The Screw Propeller: And Other Competing Instruments for Marine Propulsion a good or bad book?
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24-23 22*15 23-46 24-75 26-39 Speed of ship . . knots 11*981 11-826 12-048 11-816 12-012 Indicated horse-power 2822 2784 2880 2846 2916 ,, thrust . . . lbs. 58,150 59,900 60,000 58,900 " 58,400 Calculated ,, . 33,200 40,800 39,500 39,500 38,800 Tow-rope resistance 28,720 27,980 29,040 27,930 28,850 N.H.P. . ... 2174 2157 2230 2200 2240 T.H.P. ... . 1221 1494 1461 1426 1428 Tr. H.P. 1057 1017 1075 1015 1064, T.H.P-fN.H.P 0-562 0-692 0-655 0-648 0*637 Tr. H.P. -r I. H.P. . 0-375 0-365 0-373 0-356... 0-365 Displacement % x speed 3 -f I. H. P. 145-6 142-2 145-0 138-8 142-3 Augmented resistance, I. H.P. 164 477 386 411 364 H.P. ---T.H.P. . 0134 0-319 0-264 0-288 0-268 In 1861 H.M.S. ''Duncan/' 3985 tons, was tried with several different screws, and among them two were three-bladed with a moderate amount of surface; the one with 115 square feet of surface gave an efficiency of 0*526 against 0-502 of the two-bladed screw with 77'6 square feet of surface; that is, the blades were of the same size and shape but slightly different in pitch.
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