Theoretical Naval Architecture: A Treatise on the Calculations Involved in Naval Design, Volume 1W. Collins, 1877 - Naval architecture |
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Common terms and phrases
already angle of heel approximation B₁ beam bending bending moment body breadth butt straps calculation centre of buoyancy centre of gravity centre of lateral common interval compartment consider cubic deck determine diameter displacement distance divided draught of water draw drawn dynamical stability equal feet figure floating force fore Hence inclined water plane inertia intersection iron keel latter layer length load water line mast maximum measured metacentre midship section mode moment of inertia moments motion multiplied Naval Architects neutral axis obtained ordinates oscillation particles perpendicular Plate propeller radius of gyration ratio result rivet holes rolling rudder Rule sails shearing strength shearing stress ship ship's shown side Simpson's Simpson's Rule speed square inch square stations statical stability strength suppose surface stability termed thickness tion transverse section upright usually value of GM velocity vertical sections vessel volume wave weight wind
Popular passages
Page 33 - To find the solidity of a sphere. — Multiply the cube of the diameter by .5236.
Page 71 - Show that the moment of inertia of a body about any axis is equal to the moment of inertia about a parallel axis through the center of mass plus the product of the mass of the body and the square of the distance between the axes.
Page 18 - The sum of these products, multiplied by one-third of the common interval between the ordinates, will give the area required.
Page 347 - Denny's trials, it becomes at once manifest in every case that at its low-speed end the curve refuses to descend to the thrust zero, but tends towards a point representing a considerable amount of thrust, and it is impossible to doubt that this apparent thrust at the zero of speed when there can be no real thrust is the equivalent of what I have termed initial friction ; so that if we could determine correctly the point at which the curve, if prolonged to the speed zero, would intersect the axis...
Page 346 - ... proportional to the square of the number of revolutions, and thus, at least at the lower speeds, approximately to the useful thrust ; 5 probably remains constant at all speeds, and for convenience it may be regarded as constant, though perhaps in strict truth it should be termed
Page 306 - Shipping, in a paper read by him before the Institution of Naval Architects...
Page 92 - If the centre of gravity of the layer lies towards that side for which the assumed wedge is the greater, the correction must b0 deducted ; if it lies towards the opposite side, it must be added.
Page 346 - Papers, is due to the diminution which the action of the propeller creates in the pressure of the water against the stern end of the ship; 3, the equivalent of the friction of the screw blades in their edgeway motion through the water; 4, the equivalent of the friction due to the dead weight of the working parts, piston packings and the like, which constitute the initial or slow speed friction of the engine; 5, the equivalent of friction of the engines due to the working load; 6, the equivalent of...
Page 71 - If the mass of every particle of a body be multiplied by the square of its distance from a straight line, the sum of the products so formed is called the " moment of inertia " of the system about that line, which is also called the axis.
Page 226 - A period of free rolling, much less than that of passive rolling, gives great stiffness, as seen in the preceding Article.