XPost: sci.physics, sci.space.policy, sci.electronics.design   
      
   In sci.physics krw  wrote:   
   > On Wed, 2 Nov 2016 02:54:54 -0000, jimp@specsol.spam.sux.com wrote:   
   >   
   >>In sci.physics krw  wrote:   
   >>> On Wed, 2 Nov 2016 00:00:54 -0000, jimp@specsol.spam.sux.com wrote:   
   >>>   
   >>>>In sci.physics John Larkin  wrote:   
   >>>>> On Tue, 1 Nov 2016 18:19:02 -0000, jimp@specsol.spam.sux.com wrote:   
   >>>>   
   >>>>   
   >>>>   
   >>>>>>BTW, the lack of commercial success for flying cars has nothing to do   
   >>>>>>with propulsion methods.   
   >>>>>>   
   >>>>>   
   >>>>> But propulsion does matter, in the sense that there is no affordable   
   >>>>> way to make a flying car. Helicopters get terrible gas mileage.   
   >>>>   
   >>>>You do know helicopters spend a fair amount of time not traveling, don't   
   >>>>you, but that has nothing to do with flying cars.   
   >>>   
   >>> Cars spend a fair amount of time not driving, too.  So?   
   >>   
   >>Not at close to full output power.   
   >   
   > Helicopters don't have a throttle or an "off" button?   
      
   Of course they do but your response shows you know absolutely nothing   
   about helicopters.   
      
   When a helicopter is hovering, the engine(s) are at close to full power   
   output without going anywhere.   
      
   When a car is not moving, the engine is at idle.   
      
   Get it now?   
      
   And it still has nothing to do with flying cars.   
      
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   Jim Pennino   
      
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