Excerpt from The Screw Propeller: And Other Competing Instruments for Marine Propulsion
Some thirty-two years ago, when engaged in putting forth the Manual of Marine Engineering, I could not find a single book on the Screw Propeller, or any text book containing such information on it as would enable a draughtsman to get out the leading dimensions, and much less to make a complete design of a screw suitable for any particular ship and conditions.
At that time John Bourne's admirable book on the Screw Propeller was not only out of print, but out of date, and I fear no engineer could at any time have designed a screw which would give satisfactory results from what was contained in it. It was, however, many years after that I first saw his work, and my wonder then, as now, is that such a book was allowed to disappear, seeing how much of interest it contained.
But perhaps the strongest comment on the knowledge of the screw propeller at that time is in the admission of the then engineer-in-chief of the British Navy, that he had settled the design of those for so very important a ship as the Iris, intended to be the fastest ship in the Navy, by copying that of hms. Himalaya, a ship built in 1854, with the result that the British Admiralty, with all its knowledge and opportunities, with all its records of tests and trials, perpetrated a blunder never equalled in the history of steam navigation, although in the mercantile marine there had been not a few mistakes.
But even in modern times, notwithstanding the better knowledge and the aid of tank experiments, our best men do sometimes fail to achieve success, but the magnitude of the failure is inconsiderable compared with that of the Iris.
In the Manual of Marine Engineering I attempted to supply the wants of designers by giving a rule or formula for each important dimension, generally based on scientific reasons, and always capable of giving results agreeable with the best and most successful practice.
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PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000. Codice articolo LW-9781332068258
Quantità: 15 disponibili
Da: Forgotten Books, London, Regno Unito
Paperback. Condizione: New. Print on Demand. This book is a fascinating and detailed exploration of the history of marine propellers. The author takes the reader on a journey through centuries of innovation, from the earliest attempts to propel ships using paddles and oars, to the development of the paddle wheel and the eventual triumph of the screw propeller. Along the way, the book delves into the lives and inventions of countless pioneers in the field of marine engineering, highlighting both the successes and failures that shaped this critical aspect of maritime technology. The book's extensive coverage of early patents, designs, and experiments offers a unique glimpse into the evolution of ship propulsion and showcases the remarkable ingenuity of those who sought to conquer the seas. This book is essential for anyone interested in the history of technology, maritime engineering, or simply the compelling story of human ingenuity. The author's insightful narrative illuminates the enduring legacy of these early innovators and their impact on the world of shipping as we know it today. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Codice articolo 9781332068258_0
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