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Fuel Burn: Max power vs. Reduced Power

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Fuel Burn: Max power vs. Reduced Power

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Old 26th Apr 2006, 23:14
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Fuel Burn: Max power vs. Reduced Power

Could someone please explain the reasoning behind the fuel burn differences from using max power takeoff/climb thrust to using a reduced power takeoff/climb thrust. I understand that the max power uses less fuel but I cannot find a reference for an explanation. I know this has been explained before in the past on here but I have spents hours searching on Google and the archives on pprune but have yet to find a good explanation, thanks a bunch!
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Old 27th Apr 2006, 00:55
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The higher the pressure and temperature inside a turbojet engine, the more efficient it gets. You get higher temps and pressures by pushing the throttle forward more.

Cheers
Wino
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Old 27th Apr 2006, 05:55
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My understanding is that simply getting to efficient cruising altitudes quicker - by using full clb thr, saves the fuel.
Reduced T/O and Clb thrusts are for engine costs/life not fuel economy.
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Old 27th Apr 2006, 08:23
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Zurg is correct. Here is an example from Airbus;

Cheers,

M

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