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Thrust to Power Ratios for Modern Propulsion Systems

  1. Nov 17, 2011 #1
    Does anybody know some ballpark figures for thrust to power, newtons per watt, ratios for modern propulsion systems, mechanical drive train ie cars trucks, propeller driven craft, boats planes, and rockets.

    I've found one reference that states the F/P ratio for a DC-9 jet engine is 0.016 N / W. Is that accrurate?


  2. jcsd
  3. Nov 17, 2011 #2


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    Staff: Mentor

    I'm not sure such a ratio has any meaning, since for most vehicles it varies with speed.
  4. Nov 17, 2011 #3
    Yes, I've read that efficiency numbers for propeller driven air craft very with the vehicles air speed.

    Curves would do just as well.

    I just am clueless as to where to start looking for that information.
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