The objective of this book is to introduce flight performance analysis of air vehicles, particularly heavier-than-air craft. It includes subjects such as maximum speed, absolute ceiling, rate of climb, maximum range, maximum endurance, and take off run. Both jet aircraft and prop-driven aircraft are covered. This subject is interesting for all people who are dealing with aircraft such as aircraft designers, practicing engineers, pilots, and aircraft manufacturing companies, airlines, air forces and primarily students of the field of aeronautical engineering.