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Weight and Balance
Vaughn College GL21-1
Question | Answer |
---|---|
Payload | The term used for passengers, baggage and cargo. |
Useful Load | The weight of the occupants, baggage, and usable fuel. (Aircraft Certified before FAR Part23 include oil.) |
Usable Fuel | The portion of the total fuel load available to an aircraft in flight. |
Unusable Fuel | The small amount of fuel that cannot be safely used in flight or drained on the ground. |
Zero Fuel Weight | The weight of the aircraft to include all useful load except fuel. |
Maximum Ramp Weight | The maximum weight approved for operations on the ground. |
Maximum Takeoff Weight | The maximum design weight of any aircraft for takeoff. |
Maximum Landing Weight | The maximum authorized weight of the aircraft for landing. |
Maximum Weight | The maximum allowable weight for an aircraft under any conditions. |
Scale Weight | The weight registered on the scales used to weigh an aircraft. |
Tare Weight | The weight of all items such as blocks or chocks used to hold an airplane on the scales when it is being weighed. |
Net Weight | The scale weight subtracted from the weight of any items not part of the aircraft such as chocks or blocks. |
Acrobatic Category Airplane | An airplane that is approved for flight without restrictions other than those shown to be necessary as a result of a flight test. |
Arm | The horizontal distance that an item of equipment is located from the datum. |
Ballast | Weight that is installed in an aircraft for the purpose of bringing the CG into the desired range. |
Basic Weight | A weight determined by the manufacture. |
Center of Gravity (CG) | The point about which the weight of an airplane or any object is concentrated or balanced. |
Center of Gravity Limits | The maximum forward and rearward location allowable for the CG. |
Center of Gravity Range | The distance between the forward and rearward limits. |
Datum | An imaginary vertical plane from which all horizontal measurements are taken. |
Empty Weight | The weight of an aircraft with unusable fuel and full oil. If certified before 3/1/1978 it includes unusable fuel and unusable oil. |
Empty Weight Center of Gravity (EWCG) | The CG of an aircraft in its empty weight condition. |
Empty Weight Center of Gravity Range | Limit set that makes it impossible to exceed the GG range using standard specification loading arrangements. |
Full Fuel (Total Fuel) | The amount of fuel indicated on the TCD's which includes usable and unusable fuel. |
Full Oil (total Oil) | The amount of oil indicated on the TCD's which includes usable and unusable oil. |
Leveling Means | The method specified by the aircraft designer by which the technician can determine that the aircraft is properly leveled for weighing. |
Lateral Center of Gravity | Determining the CG of an airplane from wing tip to wing tip. |
Longitudinal Center of Gravity | Determining the CG of an airplane from nose to tail. |
Minimum Fuel | The minimum amount of fuel considered to be in the tanks when computing an adverse- loaded CG condition. |
Moment | The product of a weight of an item times its distance from the datum. |
Normal Category | The category of aircraft certified under FAR Part 23, which is limited to non acrobatic operations. |
Residual Fuel and Oil | The fluids that will not normally drain because they are trapped in the lines, filters, tanks, etc. |
Station | Is a longitudinal location on an aircraft measured from the datum, or a lateral wing point measured from buttline "0". |
Utility Category | That category of aircraft, certified under FAR Part 23, which are intended for limited acrobatic operation. |
Weighing Points | Specified point on an aircraft where the scales are placed for weighing the aircraft. |
Wheelbase | The distance measured in inches between the center of the main wheels and the center of the nose or tail wheel. |