House Documents, Otherwise Publ. as Executive Documents: 13th Congress, 2d Session-49th Congress, 1st Session, Volume 5 |
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Page 103
... blades , continues to be reported . These screws were substituted by the Department , several years since , in place of those of four blades then used , with a view to decreasing the resistance of the propeller while the vessel was ...
... blades , continues to be reported . These screws were substituted by the Department , several years since , in place of those of four blades then used , with a view to decreasing the resistance of the propeller while the vessel was ...
Page 110
... blades and a greater pitch expanding from the forward to the after edge of the blades . 4th . The relative economic propelling efficiency of this three - bladed screw , converted into a Griffith screw . To ascertain the foregoing facts ...
... blades and a greater pitch expanding from the forward to the after edge of the blades . 4th . The relative economic propelling efficiency of this three - bladed screw , converted into a Griffith screw . To ascertain the foregoing facts ...
Page 115
... blades of the forward screw to coincide with the forward edge of the blades of the after screw , the propelling surfaces of both screws would be continu- ous , and they would thus form one two - bladed screw A , 11 inches long in the ...
... blades of the forward screw to coincide with the forward edge of the blades of the after screw , the propelling surfaces of both screws would be continu- ous , and they would thus form one two - bladed screw A , 11 inches long in the ...
Page 116
... blades . Length of each blade in direc- tion of axis , in feet . Fraction used of the pitch . Projected area of the blades , on a plane at right angles to axis , in square feet . Helicoidal area of the blades , in square feet . MANNER ...
... blades . Length of each blade in direc- tion of axis , in feet . Fraction used of the pitch . Projected area of the blades , on a plane at right angles to axis , in square feet . Helicoidal area of the blades , in square feet . MANNER ...
Page 118
... blades , calculated in the ratio of the square of the velocity , and for a value of 0.45 pound avoirdupois per square foot of helicoidal surface moving in its helical path with a velocity of 10 feet per second , amounts to 0.3598 horse ...
... blades , calculated in the ratio of the square of the velocity , and for a value of 0.45 pound avoirdupois per square foot of helicoidal surface moving in its helical path with a velocity of 10 feet per second , amounts to 0.3598 horse ...
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00 Branch 00 Class 00 Hyatt 00 July Amount annum included appropriation Assistant Postmaster-General Auditor blades Boston Bureau Burlington cent Central Vermont centum Chicago Cincinnati City clerks Corporate title Cunard line David Babcock eastern district ended June 30 engines estimated expenses fees feet fiscal year ended France geographical miles George H guns held stationary Horses-power Hyatt & Spencer increase Iowa Island J. J. MARTIN J. W. Buker Junction Key West late letters mail-messenger mails main route miles per hour money-order Nashville naval Navy navy-yard North North German Lloyd Number of route officers Ohio Pacific paid pay per mile Pennsylvania Pensacola Philadelphia pistons POST-OFFICE DEPARTMENT postage-stamps postal cards Postmaster-General postmasters Poultney Quarter ended Railroad received Regular assistant repairs resistance Saint Louis Saint Paul screw ships South speed stamped envelopes station Tenn Thomas Poultney tion Total United United States attorney Vermont vessel Walton Bros Washington weight Western York