text: which increase with a decrease 
  the increase in required power setting with 
  decreased velocity is contrary to the normal 
  the regime of flight speeds 
  command of flight, 
  between the speed for minimum 
  required 
  power setting and, the stall speed (or minimum 
  control speed) is termed the “region of re- 
  In this regime of flight, 
  versed command. ” 
  a decrease in airspeed ‘must be accompanied 
  by an increased power setting in order to main- 
  tain steady flight. Obviously, 
  induced drag 
  or induced power required predominates in 
  this regime to produce the increased power 
  setting required with decreased velocity. One 
  fact should be made clear about the region of 
  reversed command: flight 
  that a 
  region of command does not imply 
  decreased power setting will bring about a 
  higher airspeed or an increased power setting 
  will produce a lower airspeed. To be sure, 
  the 
  the primary control of airspeed is not 
  power setting. Flight 
  in the region of re- 
  versed command only implies that a higher 
  airspeed will repire a lower power setting and 
  a lower airspeed will 
  require a higher power 
  setting to hold altitude. 
  
  in speed. Since 
  
  Because of the variation of required power 
  setting throughout the range of flight speeds, 
  it is possible that one particular power setting 
  may be capable of achieving steady, level flight 
  at two different, airspeeds. As shown on the 
  first curve of figure 6.2, one given power setting 
  would meet the power requirements and allow 
  steady, level flight at both points 1 and 2. At 
  speeds lower than point 2, a deficiency of power 1 
  would exist and a rate of descent would be in- 
  curred. Similarly, at speeds greater than point 
  1, a deficiency of power would exist and the 1 
  airplane would descend. The speed range be- 
  tween points 1 and 2 would provide an excess 
  of power and climbing flight would be pro- 
  duccd 