Excerpt from Elements of Aviation Engines All of the information herein contained has been before the engineering public at one time or another. Realizing that certain new develop ments must not appear in print during this critical period every precaution has been taken to observe strict avoidance of revealing confiden tial information. The writer wishes to express his gratitude to the members of the Engines Department in the S. M. A. Of Berkeley for their assistance. Special thanks is due Mr. James Irvine for his sugges tions which have resulted in many improvements. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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.