Download or read book Hans Von Ohain's First Legacy: Trends and Research Opportunities written by Brian Quinn and published by . This book was released on 1982 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This discussion begins with the history and evolution of selected military engine parameters. Whenever possible, references indicate a particular engine's first flight or its delivery date to the manufacturer. Cross referencing may result, however, in errors as large as five years. It is important to recognize that ten or more years separate an engine's conception from its manufacture. In other words, today's engines are built with advanced technology of the late sixties. The research which sired that technology is even older.