31-05. DETERMINATION OF CG POSITION
All questions: 48
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1. An aircraft’s mass is 22.000 kg and the centre of gravity is 1,5 m aft of datum. What would be the new centre of gravity if 1.500 kg were transferred from the rear hold 15 m aft of datum to the forward hold 12 m forward of datum?
2. With respect to a multi-engine piston powered aeroplane, determine the CG location at takeoff 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 Zero Fuel Mass: 4.120 lbs Moment at Zero Fuel Mass: 377.751 Ibs.in 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. A mass of 500 kg is loaded at a station which is located 10 metres behind the present centre of gravity and 16 metres behind the datum. The moment for that mass used in the loading manifest is (Assume: g=10 m/s2):
4. With respect to a single-engine piston powered aeroplane, determine the Zero Fuel Moment (lbs.in/100) in the following conditions: Basic Empty Mass: 2.415 lbs Arm at Basic Empty Mass: 77,9 in Cargo Zone A: 350 lbs Baggage Zone B: 35 lbs Pilot and front seat passenger: 300 lbs (total)
5. The CG of an aircraft is at 25% MAC and MAC is 1 m. The aircraft has 2 holds, hold 1 is 7 m aft of the datum and hold 2 is 22 m aft of the datum. If the aircraft mass is 38.000 kg, what load must be transferred from hold 1 to hold 2 to move the CG to 40% MAC?
