This book describes the performance of an airplane during an entire flight that includes take-off, climb, cruise, descent, and landing. It provides a succinct theory of aerodynamics, keeping the mathematics to a minimum. It analyzes lift and drag from both the vorticity point of view, and the pressure distribution point of view. Various forms of drag are considered, including compressibility drag. Jet engines are briefly described, including the various allowed thrust ratings. The theory provides the basis to analyze the requirements for optimum performance regimes during all the stages of...