XPost: sci.electronics.design, sci.physics, sci.space.policy   
      
   In sci.physics mike  wrote:   
   > On 11/7/2016 11:13 PM, jimp@specsol.spam.sux.com wrote:   
   >   
   >>   
   >> Aircraft engines don't lift anything.   
   >>   
   >   
   > OK, how about, "Aircraft engines,   
   > when properly fixtured,   
   > can result in objects disengaging contact with the earth?"   
      
   How about the engine on fixed wing aircraft provides thrust to overcome   
   total drag to accelerate the aircraft to an airspeed sufficient to   
   provide enough lift from the wings to overcome the force of gravity?   
      
   How about the engine of a helicopter provides power to spin rotating   
   wings to a speed sufficient to develop enough lift to overcome the   
   force of gravity? For the purpose of this discussion assume that the   
   angle of attack of the rotor blades has been set appropriately.   
      
      
      
   --   
   Jim Pennino   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)