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Politics : Formerly About Advanced Micro Devices
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To: combjelly who wrote (357661)11/9/2007 1:38:55 AM
From: Joe NYC  Read Replies (2) of 1572942
 
cj,

Coal in whatever form has lower energy density than oil. And while I don't know about the method of using powdered coal for propulsion, my guess is that the weight of the engines is higher per unit of power they generate than gas engines / turbines.

When it comes to flight weight obviously works against you, especially on long distance flights.

Joe
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