Weight & Balance

  Functions on this Page:
  Weight & Balance Sheet
CG Shift
CG % Aft of MAC

CG from Datum
Ballast
Cargo Pallet Load
 

Weight & Balance
Sheet

                                            Show two more decimal points

  Longitudinal Axis
Row Tools Description Fuel
(volume)
 | Weight of item Longitudinal
Arm
Longitudinal
Moment
Calculate
Weight Arm Moment Total
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  Lateral Axis
Row Tools
Description
Fuel
(volume)
 | Weight of item
Lateral
Arm
Lateral
Moment
 
Calculate
 
  Arm Moment  
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  Type of Fuel
    Weight per Volume (specific weight)  
  Type of Fuel     [lbs / US gal] [lbs / IMP gal] [Kg / US gal] [Kg / IMP gal] [Kg / Liter]
  AV Gasoline     
  Jet A     
  Jet B/JP-4     
  Other     
             
  weight per volume (specific weight) based on temperature          [oC]      [oF]   
Note: results for weight per volume are typically accurate up to one decimal point only. Due to the inherent variability of fuels even the same type of fuel may vary greatly depending on its origin. The figures provided here are a very rough estimate.
Values based on FAA-H-8083-1A, Aircraft Weight and Balance Handbook Chart, page 7-13.
       
  protect type of fuel weight per volume parameters*  

  Load Examples
Light Aircraft (twin piston, four seats)      
Commuter Aircraft      
Light Helicopter (piston, two seats)      

      Instructions: Select type of fuel (if appropriate), then begin by entering the weight and balance information for the longitudinal axis. Remember to
      select the appropriate calculation mode for each row before typing the information for that row. When entering a fuel quantity, you may use volume
      quantities by checking the fuel box in the desired row. This will then cause the sheet to calculate fuel weight based on the fuel selected and the weight
      per volume
value. If you are entering the fuel weight directly then you do not need to check the fuel box. The description box is completely ignored
      in the computations. Use this box to describe the content of the row entered. Once the longitudinal axis is entered, the lateral axis can be entered if
      this is desired, otherwise ignore this section. The lateral axis is generally used for weight and balance calculations for helicopters.

 

CG Shift

                                        
 
Weight Shifted     [lbs]   [kg]   [oz]   [g]
Distance Shifted     [in] - L / + R   [m] - L / + R   [ft] - L / + R   [cm] - L / + R
Total Weight     [lbs]   [kg]   [oz]   [g]
Shift in CG (ΔCG)     [in] - L / + R   [m] - L / + R   [ft] - L / + R   [cm] - L / + R

    Enter any three fields then press "Eval" on any remaining field for that field's result.

 

CG % Aft of MAC

                                        
Distance Aft of LEMAC     [in]   [m]   [ft]   [cm]
LEMAC     [in]   [m]   [ft]   [cm]
CG  % Aft of LEMAC     [%]      

    Enter any two fields then press "Eval" on any remaining field for that field's result.

    Abbreviations:     MAC = Mean Aerodynamic Cord
                              LEMAC = Leading Edge Mean Aerodynamic Cord

 

CG
from Datum

                                        
LEMAC     [in]   [m]   [ft]   [cm]
MAC     [in]   [m]   [ft]   [cm]
CG % Aft of LEMAC     [%]      
CG distance from Datum     [in]   [m]   [ft]   [cm]

    Enter any three fields then press "Eval" on any remaining field for that field's result.

    Abbreviations:     MAC = Mean Aerodynamic Cord
                              LEMAC = Leading Edge Mean Aerodynamic Cord

 

Ballast

                                        
Weight of Aircraft
without Ballast
  [lbs]  [kg]  [oz]  [g]
Distance Out of Limits   [in] - L / + R [m] - L / + R [ft] - L / + R  [cm] - L / + R
Distance Between
Ballast and Desired CG
  [in] - L / + R [m] - L / + R  [ft] - L / + R [cm] - L / + R
Ballast Weight   [lbs]  [kg]  [oz]  [g]

    Enter any three fields then press "Eval" on any remaining field for that field's result.
    Note: "Distance Out of Limits" and "Distance Between Ballast and Desired CG" must have opposite signs for balancing to be possible.

 

Cargo Pallet
Load

                                        
Length of Pallet (L)     [in]   [m]   [ft]   [cm]
Width of Pallet (W)     [in]   [m]   [ft]   [cm]
Loaded Pallet Weight     [lbs]   [kg]   [oz]   [g]
Floor Load     [lbs/in2]
 
  [kg/in2]
 
  [oz/in2]
  [lbs/m2]
  [kg/m2]
  [oz/m2]
  [lbs/ft2]
  [kg/ft2]
  [oz/ft2]
  [lbs/cm2]
  [kg/cm2]
  [oz/cm2]

    Enter any three fields then press "Eval" on any remaining field for that field's result.