NAVWEPS 00-801-80  PREFACE  The majority of aircraft accidents are due to some type of error of  the pilot.  This fact has been true in the past and, unfortunately, most  probably will be true in the future.  Each Naval Aviator should strive  to arm himself with knowledge, training, and exacting, professional  attitudes and techniques.  The fundamentals of aerodynamics as pre-  sented in this text will provide the knowledge and background for  safe and effective flying operations.  The flight handbooks for the air-  craft will provide the particular techniques, procedures,  and operating  data which are necessary  for each aircraft.  Diligent study and continu-  ous training are necessary  to develop the professional skills and tech-  niques for successful  flying operations.  The author takes this opportunity to express appreciation to those  who have assisted  in the preparation of the manuscript.  In particular,  thanks are due to Mr. J. E. Fairchild for his assistance  with the por-  tions dealing with helicopter aerodynamics  and roll coupling phenom-  ena. Also, thanks are due to Mr. J. F. Detwiler and Mr. E. Dimitruk  for their review of the text material.  HUGH HARRISON HURT, Jr.  August 1959  University of Southern California  Los Angelesj Cnlif.  iv 