INTRODUCTION

Theory of flight is simplified aerodynamics which means the study of the aircraft in motion, through the air and the forces that produce and change such motion. It is indeed easy to understand in short " how an aircraft flies "? But to make that flight a success , we should know about the problems that the flight presents and how these problems are getting solved by and by. The man is not contented with only an aircraft that flies , he becomes crazy to fly at more speeds, and higher and higher in altitudes , with utmost safety for himself as well as for the machine . At the present day , the space flights and reaching moon is not a news to us.But to understand the theory behind these flights for a lay man it requires the understanding of the basic theory first. The aim of this notes is to start from the basic principles of flight and to finish with the modern developments on this subjects within the scope of the available data.