Basic Ship Propulsion [JP Ghose RP Gokarn] on *FREE* shipping on qualifying offers. Allied Publishers J. P. Ghose, R. P. Gokarn, J. P. Ghose, R. P. Gokarnin Marine engineering. Basic Ship Propulsion. Allied Publishers. J. P. Ghose . Basic Ship Propulsion. Allied Publishers, – Marine engineering – pages. : Basic Ship Propulsion:?Basic Ship.
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The boss is fitted to the propeller shaft throughwhich the power of. ComiXology Thousands of Digital Comics.
Basic Ship Propulsion Ghose and Gokarn
Determine the optimum diameter and pitch ratio of the propeller and the delivered power in open water. Waterplane coefficient The ratio of the area of the waterplane’ to the product of the length and breadth of the ship.
The diameter of this circle is the propeller diameter D.
In this condition, with If;t. Generally, only the gross parameters of the propeller such as pitch ratio and blade area ratio are systematically varied. When considering the performance characteristics of a propeller in open water, some simplifications are usually made in Eqns. baskc
Basic Ship Propulsion: JP Ghose RP Gokarn: : Books
I I Glossary i. The angle Os between a straight line joining the centre of the propeller tq. The Froude number, the Reynoids number and the Euler number or pressure coefficient being ratios of forces are dimensionless numbers and have the same values in any.
This makes it necessary to adopt special arrangements for speed reduction and reversing, the usual arrangements being mechanical speed reduction gearing and a special astern turbine stage, or a turbo-electric drive.
The KT-KQ diagram has some interesting fe. This allows one to use non-reversing engines such as gas turbines. This direction can be controlled by a mechanism for setting the positions of the vertical blades. Sometimes, a vortex cavity extends from the propeller to the hull of the ship; this is called propeller hull vortex cavitation. Propulsion experiments using models are described in Chapter 8. The point on the propeller blade farthest from the axis of revolution basiv called the biade tip.
The behaviour of a propeller when fitted in its customary position at the stern of a ship, lropulsion the resulting hull propeller interaction are discussed next in Chapter 5. Chapter 1 introduces the subject of ship propulsion beginning with a short description of ships and ship propulsion machinery.
Learn more about Amazon Prime. Copyright Acknowledgements A book such as this leans heavily on the work of others, and the authors gratefully acknowledge their debt to propulsioj writers propylsion the publications listed in the Bibliography. Nuclear energy has been tried for ship propulsion.
Ballast A load placed in a ship to bring it to a desired condition of draught, trim and stability. Some useful data are given in the appendices at the end of the book, and there is a glossary of technical terms to help a reader unfamiliar with terms commonly used by naval architects and marine engineers.
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The correction that must be made for the difference between the Reynolds number of the ship propeller and the Reynolds number of the model propeller is usually small provided that the flow around the model propeller is turbulent in nature just as the flow around the ship propeller.
The virtual mass is the ratio of a force applied to the body and the resulting acceleration. Here’s how terms and conditions apply. The origin of coordinates is at the intersection ghosd the propeller axis and the blade reference line.
Basic ship propulsion / J.P. Ghose ; R.P. Gokarn. – Version details – Trove
Showing of 2 reviews. Such propellers are popularly known as “supercavitating propellers”.
If these bubbles collapse on the rudder, yhose rudder surface may be damaged due to cavitation erosion. Among the subjects covered are screw propeller geometry, the theory of propellers, propeller characteristics, hull-propeller interaction, propeller cavitation, strength of propellers and model experiments involving propellers.
Appendages Small attachments to the hull of a ship, e. If the line generating the helicoidal surface is perpendicular to the axis about which it rotates when advancing along it, the helicoidal surface and the propeller blade defined by it are said to have no rake.