31-05. DETERMINATION OF CG POSITION

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Random 5 questions:
1. An aeroplane, whose specific data is shown in the annex, has a planned Takeoff Mass of 200.000 kg, with its centre of gravity (CG) is located at 15,38 m rearward of the reference point, representing a CG location at 30% MAC (Mean Aerodynamic Cord). For performance purposes, the captain decides to reset the value of the centre of gravity location to 35% MAC. The front and rear cargo compartments are located at a distance of 15 m and 25 m from the reference point respectively, the cargo load mass which needs to be transferred from the front to the rear cargo compartment is:

2. With respect to multi-engine piston powered aeroplane, determine the Block Fuel moment (Ibs.in) in the following conditions: Basic Empty Mass: 3.210 lbs Basic arm: 88,5 In One pilot: 160 lbs Front seat passenger: 200 lbs Centre seat passengers: 290 lbs (total) One passenger rear seat: 110 lbs Baggage in zone 1: 100 lbs Baggage in zone 4: 50 lbs Block Fuel: 100 US Gal Trip Fuel: 55 US Gal Fuel for start up and taxi (included in Block Fuel): 3 US Gal Fuel density: 6 lbs/US Gal


3. Given:
Dry Operating Mass: 110.000 kg
Basic index: 119,1
Number of passengers: 335 distributed as shown in the annex (75 kg per PAX)
Cargo load and luggage: 9.500 kg distributed as shown in the annex
Fuel: 40.000 kg
The centre of gravity in % MAC (Mean Aerodynamic Cord) for Zero Fuel Mass is located at:


4. Using the data given in the load and trim sheet, determine from the following the correct values for the Takeoff Mass and the position of the centre of gravity at that mass if the fuel index correction to be applied is given as -0,9.

5. Given:
Dry Operating Mass: 110.000 kg
Basic index: 119,1
Number of passengers: 185 distributed as shown in the annex (75 kg per PAX)
Cargo load and luggage: 14.000 kg distributed as shown in the annex
Fuel: 42.000 kg
The centre of gravity in % MAC (Mean Aerodynamic Cord) for Zero Fuel Mass is located at: