sentences:  This device has advantage over standard
  turbopumps in that the weight is about the same, the unit, engineering and test 
  costs are less and the chance for catastrophic failure is less.This 
  pump has the advantage over pressure fed designs in that the weight of 
  the complete rocket is much less, and the rocket is much safer 
  because the tanks of rocket fuel do not need to be at high pressure.The 
  pump could be started after being stored for an extended period with 
  high reliability.