A 3 2 0 Thrust Ratings
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Joined: Jun 2006
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From: Middle East
A 3 2 0 Thrust Ratings
Hi Guys,
Any smart guy could tell me how to use the Thrust R A T I N G S - Graph in Fcom 3.05.06 Page 3, And could you also tell me about the COrner Point how to know if its < or > than OAT !?!?
Thanks Guys
Any smart guy could tell me how to use the Thrust R A T I N G S - Graph in Fcom 3.05.06 Page 3, And could you also tell me about the COrner Point how to know if its < or > than OAT !?!?
Thanks Guys
Joined: Oct 2009
Posts: 1,270
Likes: 0
From: UK
Hi Captain_BH,
I'm not that smart - but in the example they give, it shows how to estimate the N1 Flex is about 85 and a bit %. (50C Flex, P Alt 2,000 ft and OAT = -10C)
If you look in the top right hand corner (Corner Point), they have drawn a graph showing flat rating temp v P ALT curve. At a Pressure Alt of 2,000 ft, the curve is intercepted at 40 degs C.
In this particular example, since the OAT < than the "Corner Point" value (Flat rating Temperature) then no correction is required.
I'm not that smart - but in the example they give, it shows how to estimate the N1 Flex is about 85 and a bit %. (50C Flex, P Alt 2,000 ft and OAT = -10C)
If you look in the top right hand corner (Corner Point), they have drawn a graph showing flat rating temp v P ALT curve. At a Pressure Alt of 2,000 ft, the curve is intercepted at 40 degs C.
In this particular example, since the OAT < than the "Corner Point" value (Flat rating Temperature) then no correction is required.
Last edited by rudderrudderrat; 9th July 2011 at 18:19.
