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Weight and Balance

Joey Giangrasso. Weight and Balance. This is a study tool developed by Joey Giangrasso as part of the development training for CFI certification under the supervision of Joseph J. Zubay, CFI. Weight and Balance. Safety Calculating Center of Gravity (CG) Loading configurations.

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Weight and Balance

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  1. Joey Giangrasso Weight and Balance This is a study tool developed by Joey Giangrasso as part of the development training for CFI certification under the supervision of Joseph J. Zubay, CFI.

  2. Weight and Balance Safety Calculating Center of Gravity (CG) Loading configurations

  3. Safety Stay within the limitations

  4. Center of Gravity Location in airplane where all forces are balanced All three axes pass through CG String analogy

  5. CG Range Check it out one time

  6. Weight at a Distance Origin (Place to Start) Weights are known See Saw Middle Weight on both ends

  7. INSERT PICTURE HERE

  8. Airplanes Datum Line=imaginary line of reference Arm=distance from datum (Inches Weight=measured (pounds) Moment

  9. More Terms Gross Take Off Weight max weight at take off 1 gal AvGas = 6 lbs 1 gal Oil = 7.5 lbs Basic Empty Weight normally includes unusable fuel and full oil (Early 1970s)

  10. Equations Moment=Weight x Arm Center of Gravity = Total Moment Total Weight

  11. The Table CG=TotalMoment/Total Weight=_______________ Limitations Forward _________(CG or Mom) Aft ______(CG or Mom)

  12. Two Charts Used to determine moments READ EVERYTHING ON THE CHART FIRST Figure 35 Table Line Graph

  13. Two Charts Used to determine moments READ EVERYTHING ON THE CHART FIRST Table Line Graph

  14. SAMPLE 1 Basic Empty Weight (B.E.W.) 2015lbs Moment 155,400 Front 200lbs Back 100lbs Fuel 24gals

  15. AND THE ANSWER IS….. CG=79.75 Total weight 2479 Total moment 197,720

  16. Two Charts Used to determine moments READ EVERYTHING ON THE CHART FIRST Table Line Graph

  17. Sample 2 B.E.W 1350 lbs Empty Moment 51500 inch-lbs Front 200lbs Back 200lbs Fuel 30 gals Oil 15qts

  18. And the answer is….. Total moment 81800 Total weight 1945 Within limitations…..YES

  19. Forward and Aft Loading Forward Aft

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