If you would like to share,
  e-mail or bookmark this
  page, the tools below
  are available for your
  convenience.
   

 
  Surf with confidence!
  Site has been tested by:
    Norton™ Safe Web
    McAfee SiteAdvisor ®

   Weight & Balance   More functions than your average flight computer:
Calculate two axis weight & balance
 
Page Table of Contents Use these links to go directly to desired calculator
  Weight & Balance Sheet CG from Datum
  CG Shift Ballast
  CG % Aft of MAC 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
 |  
 |  
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |

  Lateral Axis
Row Tools
Description
Fuel
(volume)
 | Weight of item
Lateral
Arm
Lateral
Moment
 
Calculate
 
  Arm Moment  
         |
 
 
         |  
 
         |  
 
         |
 
 
         |    
         |    
         |    
         |    
         |    
         |    
         |    
         |    
         |    
         |    
         |    
         |    
         |    
         |    
         |    
         |    

  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

                                        
CG Shift with Weight Diagram
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

                                        
CG - Mean Aerodynamic Cord Diagram
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

                                        
Ballast Diagram
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

                                        
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.

 

   

   
 
  luizmonteiro.com's
Navigation Simulator
Practice in our simulator specifically designed for learning the basics of instrument navigation. Try the Navigation Simulator now available for Windows and Mac OS. Free to try fully functional version for 10 days, $39.95 to buy.
 
 


 
  Stay connected, get
updates and news. Visit luizmonteiro.com's facebook page.
 


 
Units and Abbreviations
Length or Distance
m -  meters
ft -  feet
in -  inches
cm -  centimeters
 
Volume
US gal -  US gallons
IMP gal -  Imperial gallons
Liter -  Liter
m3 cubic meters
ft3 cubic feet
fl oz -  fluid ounce
 
Weight
g -  grams
oz -  ounces
lbs -  pounds
Kg -  Kilogram
 
Temperature
oF -  degrees Fahrenheit 
oC -  degrees Celsius 
 
Area
in2 US gallons
m2 square meters
cm2 square centimeters
ft2 square feet
 
Other
CG -  center of gravity
L -  length
W-  width
Δ -  delta (meaning difference)
 

 

 
   All rights reserved to Luiz Roberto Monteiro de Oliveira.  No content or code of this web site may be reproduced without prior permission from the author.