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Old 13th Jul 2009, 18:46
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XPMorten
 
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B787 and TPR

Hi,

Can someone explain a bit on the TPR thrust unit that the B787 uses?
What and how exactly does it measure thrust?

To give you an idea of the numbers we are talking about, here is from the FCOM.

At max takeoff N1 (ISA);
N1 is 92,2%
TPR is 82,8

Is it some kind of value for the amount of AVAILABLE thrust used?
Meaning in the example that you have 17,2% of thrust still available.
(apologies if this has been discussed already)

Cheers,

XPM
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