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weight and balance

Asked by: 1649 views Aerodynamics

hello guys, i need help on answering the question about weight and balance, appreciate your help

Q) After loading the airplane, the original weight is 98,000 Lb., The CG position is at station number 500 INS and found that it is necessary to remove 2,000 Lb. from station 250 INS, the CG will be changed to the limit. Find CG distance changed.

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2 Answers

  1. Bob Manning on Feb 03, 2016

    Download the FAA W&B Handbook here; https://www.faa.gov/regulations_policies/handbooks_manuals/aircraft/media/FAA-H-8083-1A.pdf

    Look at page 7-16. Work through a couple from the handbook, you’ll have it down in no time.

    Good luck.

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  2. Parth on Feb 15, 2016

    I have come up with following formula which will make it very simple.

    change in cg = (weight added/removed * distance from cg where weight is added/removed) / ( total weight – weight added/removed)

    to make it look simple i will add values

    change in cg = (2000*250)/(98000-2000) = 5.21 inches

    so cg will be shifted by 5.21 inches.

    now u have to use common sense which side it will shift.

    since original cg was 500 and u r removing something from 250 so definately new cg will move further back from 500 inches.

    so new cg will be 500 + 5.21 = 505.21 inches from ref datumn

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