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Thread: Chinook Autorotation
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Old 15th Sep 2016, 15:05
  #13 (permalink)  
langleybaston
 
Join Date: Jun 2009
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QUOTE:

its just that the energy to provide lift is taken from somewhere else, ie kinetic energy as opposed to chemical energy.

Er, no. The enrgy source is potential [courtesy of gravity], the height, traded for kinetic.
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