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Guest Tom C.

Flex to Temp?

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Guest Tom C.

Hi everyone.I've been searching here with a week but have still to find definate answer, so here goes.I have all the Airbus products by PSS and am wondering is the Flex to Temp feature actually modelled in full? If I change the settings in the TAKE OFF screen on the MCDU, will it make any difference to the actual take off roll?Thanks in advance for any help or advice.

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Guest vrandar

Flex TO Temp is modelled but an error in the progamming means that unless you use negative figures there is no effect. When I do a flex takeoff I use a figure of -20 most of the time. It is not just a case of putting a minus in front however - life is never that simple! When I get time I intend to finish off a small spreadsheet to compute an appropriate flex temp. Below is a table showing the approximate thrust at different negative Flex TO Temp figures:FLEX N1%-10 96.1-11 96.0-12 95.8-13 95.6-14 95.5-15 95.3-16 95.2-17 95.0-18 94.9-19 94.7-20 94.5-21 94.4-22 94.2-23 94.1-24 93.9-25 93.8-26 93.6-27 93.5-28 93.3-29 93.1-30 93.0-31 92.8-32 92.7-33 92.5-34 92.4-35 92.2-36 92.1-37 91.9-38 91.7-39 91.6-40 91.4-41 91.3-42 91.1-43 91.0-44 90.8-45 90.7-46 90.5-47 90.3-48 90.2-49 90.0-50 89.9-51 89.7-52 89.6-53 89.4-54 89.3-55 89.1-56 88.9-57 88.8-58 88.6-59 88.5-60 88.3Rob Elliott, EGPE InvernessPSS Airbus Support andAirbus Fleet Training Captain, British Airways Virtual airbus@speedbirdonline.co.ukhttp://www.speedbirdonline.co.uk/airbus.htmlhttp://www.bavirtual.co.uk

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Guest Tom C.

Thats perfect Rob. Once I know its working I can study up on it. Didn't want to waste time learning how to figure it out if it wasn't working.Thank you.

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thanks for the table! very handy. i'm wondering if anybody has a similar table of real N1%/Flex values for the a32x. this would make it easy to convert between real flex values (say, generated by tpc) and pss "minus" values. otherwise, i'm still confused as to what to enter into the mcdu after running tpc.cheers,alden

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