ATPL MASS AND BALANCE
Mass & Balance topic exists to provide aircrew with all of the necessary knowledge to not only calculate (accurately) the mass and loading of their aircraft, but also its centre of gravity and how to calculate any adjustments in order that a flight is only ever carried out within the limits issued by the aircraft’s manufacturer.
If your interested in the full break down of what’s covered in the topic here’s the full list:
- Units & Conversions
- Aircraft Mass Definitions
- Allowed Take-off Mass
- Maximum Traffic and Fuel Load
- Cargo Loading & Limitations
- The Effect of Mass & It’s Distribution
- Datum, Moments & Determining Centre of Gravity
- Aerodynamic Chord & Centre of Gravity Position
- Adjusting the Centre of Gravity
- Methods for Weighting Aircraft
- Weighing Passengers, Crew & Baggage
- Loadsheets & Trim
1 Metre = 3.28 Feet
1 Ft = 12 Inches
1 KG = 2.205 lbs
Weight = Mass x 9.81
1 Imp Gallon = 4.55 Litres
1 US Gallon = 3.79 Litres
1 Imp Gallon = 1 US Gal x 1.2
Running Load = Mass ÷ Length
Definition: The mass of an object per unit of length.
Area Load = Mass ÷ Area
Definition: The mass of an object per unit of area.
Moment = Force x Distance
Definition: A moment is the tendency of a force to rotate an object around its axis. It is dependent upon the size of the force applied and the distance of that force from the axis of rotation.
CENTER OF GRAVITY
C OF G POSITION = MOMENT ÷ MASS
NB: The C of G position is measured from the Datum. The Datum is a point from which all masses are referenced.