For the purpose of aeroplane mass and balance calculations the datum point is ? [ Analysis topography ]

Question 72-1 : A fixed point from which all balance arms are measured it may be located anywhere on the aeroplane's longitudinal axis or on the extensions to that axis the point through which the sum of the mass values of the aeroplane and its contents is assumed to act vertically a point near the centre of the aeroplane it moves longitudinally as masses are added forward and aft of its location a variable point that is dependent on the load distribution for its location from which all balance arms are measured

In calculations with respect to the position of the centre of gravity a ?

Question 72-2 : A reference plane which is chosen by the aircraft manufacturer its position is given in the aircraft flight or loading manual calculated from the loading manifest an arbitrary reference chosen by the pilot which can be located anywhere on the aircraft calculated from the data derived from the weighing procedure carried out on the aircraft after any major modification

The mass of an item multiplied by it's distance from the datum is it's ?

Question 72-3 : Moment centre of gravity moment arm force

The moment for an item is ?

Question 72-4 : The mass of the item multiplied by it's distance from the datum the mass of the item divided by it's distance from the datum the distance the item is from the datum divided by it's mass the square of the distance the item is from the datum divided by it's mass

The reference about which centre of gravity moments are taken is the ?

Question 72-5 : Datum centre of pressure centre of mass chord line

The datum is a reference from which all moment balance arms are measured its ?

Question 72-6 : At a convenient point which may not physically be on the aircraft at or near the forward limit of the centre of gravity at or near the focal point of the aircraft axis system at or near the natural balance point of the empty aircraft

A load placed aft of the datum ?

Question 72-7 : Has a positive arm and therefore generates a positive moment has a negative arm and therefore generates a negative moment and mass has a negative arm and therefore generates a negative moment has a positive arm and therefore generates a positive moment but negative mass

A load placed forward of the datum ?

Question 72-8 : Has a negative arm and therefore generates a negative moment has a negative arm and therefore generates a negative mass and moment has a positive arm and therefore generates a positive mass and moment has a positive arm and therefore generates a positive moment

For the following see saw to be in balance . 236 ?

Question 72-9 : Fb = a x fa / b fb = a + fa / b fb = a x b / fa fb = b x fa / a

For the following see saw to be in balance . 237 ?

Question 72-10 : Fc = fa / 3 fc = 3fa fc = fa / 3a fc = 3 / fa

For the following boom to be in balance . 238 ?

Question 72-11 : B = fa x a / fb b = fb x a / fa b = fa x a / fb b = fb + a / fa

For the following boom to be in balance . 239 ?

Question 72-12 : A = b x fb / fa a = b + fb / fa a = b x fa / fb a = b fa + fb

A tri wheel aircraft has its datum 25 inches aft of the nose wheel and 180 ?

Question 72-13 : 6925 lbs and 201 2 inches from the nose wheel of the aircraft 6925 lbs and 176 3 inches from the nose wheel of the aircraft 3525 lbs and 172 7 inches from the datum 3525 lbs and 201 2 inches from the datum

The mass of an aircraft is 1950 kg .if 450 kg is added to a cargo hold 1 75 ?

Question 72-14 : 33 cm 40 cm 30 cm 34 cm

If nose wheel moves aft during gear retraction how will this movement affect ?

Question 72-15 : It will cause the cg to move aft it will not affect the cg location it will cause the cg to move forward the cg location will change but the direction cannot be told the information given

Where is the centre of gravity of the aeroplane in the diagram . 185 ?

Question 72-16 : 26 57 cm forward of datum 32 29 cm forward of datum 26 57 cm aft of datum 32 29 cm aft of datum

Given .total mass 2900 kg.cg location station 115.aft cg limit station 116.the ?

Question 72-17 : 207 kg 317 kg 140 kg 14 kg

Given .total mass 7500 kg.centre of gravity cg location station 80 5.aft cg ?

Question 72-18 : 62 5 kg 73 5 kg 68 9 kg 65 8 kg

A jet aeroplane with the geometrical characteristics shown in the appendix has ?

Question 72-19 : 27 5 % 35 5 % 30 4 % 16 9 %

The total mass of an aeroplane is 9000 kg the centre of gravity cg position is ?

Question 72-20 : 300 kg 30 kg 196 kg 900 kg

Assume .aircraft actual mass 4750 kg.centre of gravity at station 115 8.what ?

Question 72-21 : Station 117 69 station 118 33 station 120 22 station 118 25

Given .aircraft mass 36000 kg.centre of gravity cg is located at station 17 ?

Question 72-22 : It moves aft by 0 31 m it moves forward by 0 157 m it moves aft by 3 22 m it moves aft by 0 157 m

Given the following information calculate the loaded centre of gravity cg . 197 ?

Question 72-23 : 56 53 cm aft datum 56 35 cm aft datum 60 16 cm aft datum 53 35 cm aft datum

Given are the following information at take off .given that the flight time is ?

Question 72-24 : 61 28 cm aft of datum 61 29 cm aft of datum 61 26 cm aft of datum 61 27 cm aft of datum

Given that the total mass of an aircraft is 112000 kg with a centre of gravity ?

Question 72-25 : 29344 kg 16529 kg 8680 kg 43120 kg

The total mass of an aeroplane is 145000 kg and the centre of gravity limits ?

Question 72-26 : 7500 kg 35000 kg 62500 kg 3500 kg

With respect to multi engine piston powered aeroplane determine the block fuel ?

Question 72-27 : 56160 9360 433906 30888

With respect to a multi engine piston powered aeroplane determine the total ?

Question 72-28 : 401338 lbs in 432221 lbs in 433906 lbs in 377746 lbs in

Determine the cg location at take off in the following conditions .basic empty ?

Question 72-29 : 91 92 inches aft of datum 91 84 inches aft of datum 91 69 inches aft of datum 93 60 inches aft of datum

With respect to a single engine piston powered aeroplane determine the zero ?

Question 72-30 : 2548 8 6675 2496 3 2311 8

The aeroplane has a mass of 51 000 kg in the cruise the range of safe cg ?

Question 72-31 : Forward limit 4% aft limit 29 7% mac forward limit 5% aft limit 29 7% mac forward limit 4% aft limit 29 2% mac forward limit 5% aft limit 29 5% mac

Considering the annex attached to the 50 000 kg mass determine the displacement ?

Question 72-32 : The centre of gravity move back from 4% to 5% mac the centre of gravity move forward from 4% to 5% mac the centre of gravity move back from 5% to 4% mac the centre of gravity move forward from 5% to 4% mac

Using the weight and balance graph provided in the appendix determine the range ?

Question 72-33 : From 5% to 29 2% mac from 5% to 29 5% mac from 4% to 29 5% mac if flaps and landing gear are retracted from 4% to 29 2% mac if flaps and landing gear are retracted

Prior to departure an aircraft is loaded with 16500 litres of fuel at a fuel ?

Question 72-34 : Lighter than anticipated and the calculated safety speeds will be too high lighter than anticipated and the calculated safety speeds will be too low heavier than anticipated and the calculated safety speeds will be too high heavier than anticipated and the calculated safety speeds will be too low

An additional baggage container is loaded into the aft cargo compartment but is ?

Question 72-35 : Will give reduced safety margins will not be achieved will be greater than required are unaffected but v1 will be increased

Fuel loaded onto an aeroplane is 15400 kg but is erroneously entered into the ?

Question 72-36 : Speed at which the airplane will leave the ground will be higher than expected v1 will be increased v1 will be reached sooner than expected the aeroplane will rotate much earlier than expected

Which of the following is unlikely to have any effect on the position of the ?

Question 72-37 : Changing the tailplane horizontal stabiliser incidence angle lowering the landing gear movement of cabin attendants going about their normal duties normal consumption of fuel for a swept wing aeroplane

Which of the following is unlikely to have any effect on the position of the ?

Question 72-38 : Changing the tailplane horizontal stabiliser incidence angle lowering the landing gear movement of cabin attendants going about their normal duties normal consumption of fuel for a swept wing aeroplane

When the centre of gravity is at the forward limit an aeroplane will be ?

Question 72-39 : Extremely stable and will require excessive elevator control to change pitch extremely stable and require small elevator control to change pitch extremely unstable and require excessive elevator control to change pitch extremely unstable and require small elevator control to change pitch

A mass of 500 kg is loaded at a station which is located 10 metres behind the ?

Question 72-40 : 80000 nm 30000 nm 50000 nm 130000 nm