Weight and Balance Flashcards
21.5 - 38.5
What is Basic Weight?
The weight of the aircraft, including all basic equipment, unusable (trapped) fuel and oils
+ Variable Load:
Crew, Crew baggage, Catering, Role equipment
+ Variable Load
What is AIRCRAFT PREPARED for SERVICE (APS) / DRY OPERATING WEIGHT (DOW)?
+ Variable Load
+ Payload:
Passengers
Cargo
Expendable load:
-Paratroopers
-Airdrop cargo
-Armaments
-Chaff & Flares
+ Variable Load
+ Payload
What is ZERO FUEL WEIGHT (ZFW)?
+ Fuel in tanks
+ Variable Load
+ Payload
+ Fuel in tanks
- Taxi fuel
What is TAKE-OFF WEIGHT (TOW) / ALL-UP WEIGHT at TAKE-OFF (AUW @ TO)
+ Variable Load
+ Payload
+ Fuel in tanks
What is Ramp Weight?
- Taxi fuel
- Expendable load
- Fuel burn
What is a MOMENT?
The turning effect (moment) of any weight about a point of balance (the fulcrum) is directly proportional to its distance from that point (the arm).
What is a BALANCE ARM?
The distance from the aircraft’s Datum to the CofG position.
What is the CofG?
This is the position where the mass of the airplane is considered concentrated for balance purposes. It is normally referred to in terms of %MAC
What is the Airplane Datum?
This is a plane perpendicular to the fuselage centerline from where all arm measurements are taken.
What is the Mean Aerodynamic Chord (MAC)?
This is the chord of an imaginary rectangular airfoil with the same area of the actual wing and which produces the same resulting force vectors of the actual wing. Take-Off %MAC, i.e. the take-off CofG figure calculated during weight and balance planning, should be noted by the crew in order to set the elevator trim after completing the trim check.
What is Leading Edge MAC (LEMAC)?
If a general MAC is not given but a LEMAC (Leading Edge Mean Aerodynamic Chord) and a TEMAC (Trailing Edge Mean Aerodynamic Chord) are given (both of which would be referenced as an arm measured out from the datum line) then your MAC can be found by finding the difference between your LEMAC and your TEMAC.
What is Payload?
This is the weight of occupants, baggage, cabinet contents.
Where is the Datum point on the Phenom?
On the nose
What is the distance from Datum to LEMAC?
5.325m
