A technical and operational history of the liberty engine in the early days of the twentieth century aircraft engines were regularly employed in racing cars and speed record attempts both on land and sea. The engine design eventually saw use on land sea and in the air and its active military career spanned the years 1917 to 1960 in addition it provided noble service in a multitude of civilian. Complete history of the relationship between the allison engine company and the liberty engine the aim of the liberty was to standardize aircraft engine design the theory was to have an engine design that could be built in several sizes and thus power airplanes for any purpose from training to bombing the differences in sizes would be obtained by using different numbers of cylinders in the same design a large number of other parts would also be used in common by all resulting sizes of . A technical operational history of the liberty engine tanks ships and aircraft 1917 1960 by robert j neal one of historys most famous engines and very possibly the one with the longest active military service life the liberty represents an ambitious and visionary solution to what could have become an intractable problem in the early days of engine building be it automotive or
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