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Model Steam Turbines: How To Design And Build Them; A Pract

 
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Model Steam Turbines: How To Design And Build Them; A Pract
 MessagePosté le: Mer 21 Juin - 06:22 (2017) Répondre en citant  
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Model Steam Turbines: How to Design and Build Them; A Practical Handbook for Model-Makers (Classic Reprint)
by H. H. Harrison



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Excerpt from Model Steam Turbines: How to Design and Build Them; A Practical Handbook for Model-Makers

Steam turbines may be divided into two classes: the impulse or action type, in which a jet of steam or fluid at high velocity impinges on a number Of vanes or paddles fixed around the rim Of a wheel free to rotate, and the reaction type, more generally known as Hero's Engine or Barker's mill.

Both these types are pretty familiar to us from our Childhood's days, in the windows of the toyshop, and no doubt in many cases (the writer's also) formed our first steam model. They are illustrated in figs. 1 and 2, and frequently appear in patent specifications, though, of course, with considerable modification.

In order that the principles on which these machines are designed and for which they depend on their action may be thoroughly understood, the following elementary mechanical considerations are necessary.

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This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

















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