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Guest GW Norris

LRF Load Sheet formulas wrong, not the same WTS. in .cfg file

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Guest GW Norris

Hello SupportI have found in the T7 LRF load sheet the payload calculation formulas are not correct and do not reflect the payload wt in the aircraft.cfg fileCell D6 adds the Cells D4 and D5 which is corrictThen Cell D13 adds Cells D4 thru D12 which adds the 2880 from D6 again which gives 2880 to much in cell D13Cell B49 Add the 2880 error twice to give a 5760 lb error in Cell B49.If you add up all the 14 load stations from the cfg file then you will have 5760 lbs less payload wt than the load sheet says. and if your using the load sheet COG for the FMC then it will be wrong.Proper formula for Cell D13 would be D6 thru D12Proper formula for Cell D29 would be D13 plus D27Proper formula for Cell B49 would be D13 plus D27or you could just put sum(D29) since they are the same valuesalso the meals wt is not the same in the load sheet as in the .cfg fileI haven't checked the LR and the ER, but plan to review those to.Just thought it might make a difference in the CG problems people are experiencing. haven't made a test flight to see if the correct value entered will make a difference. however it will allow the load sheet to give you a correct ZFW and CG to enter in the FMC.Gary

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Guest GW Norris

looks like the smilies have entered my post unexpectedly, got to edit them out. they are plus and colon signs being replaced with emoticons.not sure how to edit itGary

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Guest GW Norris

Also wondering why in the Fuel section of the load sheet column C the formula uses 6.593 lbs per gal and column G fuel load uses 6.7 lbs per gal? Makes a big difference when loading thousands of gallons. Also effects the KGS section since that formula uses the LBS as a conversion factor.Still researching these load sheets for accuracy when compared to the .cfg file and the difference in CG the errors makeGary

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Guest GW Norris

Further observations LR version - Load sheet shows tank capacity of 26100 in the Center Tank. aircraft cfg file shows the same thing with a total capacity of 53440 galslook at the (Fuel) section of the cfg file and add up the different tank capacities. however in the LRF version it shows Center tank 20550 capacity, equates to a 5600 gal less capacity in the LRF version. The ER version shows the same Center tank capacity as the LRF versionThe Capacity and Ranges listed in the (General) section , Performance= line , of the cfg file for all 3 versions shows a total fuel capacity of 45220 gals, and all aircraft show the same ranges and all other data.The General section of the cfg file may not even do anything in the sim, but why include it in the file with a = sign if it's not important? there is alot of information in that one line, Performance= with the proper syntax between each item. I can't imagine it not meaning anything.I personally changed the formulas in the load sheet to be correct so the math added up properly and changed the fuel wt per gal to be 6.7 in column C so the max capacity lbs would be calculated using the same figure for lbs. per gal as the Actual load column.Don't know if PSS will even read this post, and give me some feed back.Gary

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Guest Phoenix 1

when it is issued

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