A basic engineering manual for those who wish to explore and compute the precise flight characteristics of a new or existing aircraft. This is a guide designed to help verify estimates and assumptions from your original performance predictions made during the design phase. The tests outlined are designed so that no special equipment is required other than standard aircraft instrumentation, a stopwatch and a tape recorder. A basic knowledge of applied aerodynamics and an ability in mathematics and physical mechanics should be considered a pre-requisite for this book.