text: To appreciate the governing requirements 
  during the acceleration process, assume the 
  engine described in figure 2.12 is in steady state 
  stabilized operation at point A and it is desired 
  to acceler&the engine to maximum RPM and 
  stabilize:at point C. As the throttle 
  is placed 
  at the position for maximum RPM, the fuel 
  increase the fuel flow to point B 
  control will 
  to provide acceleration fuel 
  flow. As the 
  engine accelerates and increases RPM, the fuel 
  control will continue to increase the fuel flow 
  within 
  the 
  engine speed approaches the controlled maxi- 
  mum RPM at point C. As the engine speed 
  nears the maximum at point C, the fuel contrcl’ 
  will reduce fuel flow to produce stabilized oper- 
  ation at this point and prevent the engine 
  overspeeding the commanded RPM. Of course, 
  if the throttle 
  the 
  acceleration fuel flow is barely above the steady 
  state condition and the engine does not ap- 
  proach the acceleration fuel flow boundary. 
  is recommended for 
  While 
  this 
  ordinary conditions 
  free 
  operation and good service life, the engine must 
  be capable of good acceleration to produce 
  rapid 
  flight 
  thrust changes for satisfactory 
  control. 