CHAPTER  2.  AIRPLANE  PERFORMANCE  REQUIRED  THRUST AND  POWER  AVAILABLE  THRUST AND  POWER  TURBOJET ENGINES  PRINCIPLES OF PROPULSION.  Mass flow, velocity change, momentum change..  Newton ’ s laws,  Wastedpower...............................:.....................  Power available.  Propulsion efficiency.  104  104  104  106  VARIATION  OF THRUST AND POWER REQUIRED  Effect of gross weight.  Effect of configuratmn.  Effect of altitude.  99  101  DEFINITIONS.  Pan&e 14 ;n&Ced  drw  _ _.-__._  _._-  _-  Thrustandpowerrequir~~:::::::::::::::::::::::::::::::::::::::::  96  $6  97  Drag variation with speed  Induced and parasite drag  Stall speed  Minimum drag  Specific performance conditions  Compressibility drag rise  Inlet or diffuser  Compressor  Combustion chamber  Turbine  Exhaust nozzle  Thrust and power available  Effect of velocity  Effect of engine speed  Specific  fuel consumption  Effect of altitude  Governing apparatus  Steady state, acceleration,  deceleration  Instrumentation  Operatingcycle....................................................  Function of the components.  107  109  Turbojet operating characteristics..  :_  116  viii  Mi.li$z ’ .?1 p”‘““ite  dr2g CxEciczt  Airplane efficiency  factor  Equivalent parasite area  PARASITE DRAG.  Sources of parasite drag.  .  Parasite drag coefficient.. . .  Parasite and induced drag.  87  87  Effect of configuration.  Effect of altitude.,  Effectofspeed......................................................  AIRPLANE TOTAL DRAG..  91  ;:  92  *am  NAVWEPS 00-801-80  TABLE OF CPNTENTS 