Weight & Balance Flashcards
What are the results of an excessive forward center of gravity?
Instability and difficulty flying.
What is the primary purpose for computing weight and balance?
Safety.
How do you compensate for equipment installed in or out of the CG range?
Install ballast.
What is the datum?
Station zero, or the point from which all horizontal measurements are taken. Designated by the aircraft manufacturer.
What is meant by tare weight?
Any weight added to the scales to stabilize aircraft, but not part of the aircraft weight. Such as the weight of the chocks and other items that are used to hold the aircraft on the scales.
What is necessary when the weight and balance records are missing?
The aircraft is weighed, and the empty weight center of gravity is computed. These values are recorded in new weight and balance records started for the aircraft.
How do we treat new equipment added to an aircraft?
Compute weight and balance mathematically.
What is done with fuel during weight and balance?
The fuel is drained, or topped off and computed into weight and balance.
How do you get a (+) moment aft of datum?
By adding weight.
How do you get a (-) moment in front of the datum?
By adding weight.
What is done with all equipment in an aircraft not permanently installed during weight and balance?
Removed from the aircraft.
What is a loading graph?
A way to determine the CG at a glance.
What is meant by residual fuel?
The fuel that is left in the tank, lines and components when the aircraft is placed in level flight position and the fuel drained at the main fuel strainer. This is also called undrainable fuel.
What is residual oil?
Oil left in the system after draining, also known as undrainable oil.
Define ballast.
Weight added to an aircraft to correct the CG.
Name some common leveling methods.
Level and leveling means, protractor, or a plumb bob.
Which has the more critical center of gravity range, an airplane or a helicopter?
A helicopter.
Why is it necessary to consider the category under which an aircraft is licensed when computing its weight and balance?
Different categories under which an aircraft can be licensed have different maximum gross weights and different center of gravity ranges.
What is meant by the mean aerodynamic chord (MAC)?
The chord of an imaginary airfoil that has the same aerodynamic characteristics as the actual airfoil.