This book is primarily aimed at the operational personnel of piston and gas turbine engines as a theoretical supplement to their own experiences, maintenance and repair staff, business management personnel, future pilots in flight schools and flight training organizations from PPL to ATPL and helicopter training, as well as students in relevant fields, thereby contributing to a better understanding of job-specific contexts in aviation. Additionally, technically interested laypersons will also find a wealth of information. A comprehensive appendix in the form of tables and directories makes the book a relevant manual and reference work.