text: where 
  
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              [html]<thead><tr><td>F = force or thrust, lbs. m = mass, slugs</td></tr></thead><tbody><tr><td>4 = acceleration, ft. per sec. b</td></tr><tr><td>d − urinative with respect to time, c - E, d = rate of change with time</td></tr><tr></tr><tr></tr><tr></tr></tbody>
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  In the process of creating thrust by mo- 
  mentum change of the airstream, a relative 
  velocity, Vz-V1, is imparted to the airstream. 
  Thus, some of the available energy is essen- 
  tially wasted by this addition of kinetic energy 
  to the airstream. The change of kinetic energy 
  per time can account for the power wasted in 
  the airstream. 