WorksheetsMass and Balance JA CAT1 - Kenya School Of Flying.
Total questions: 25
Worksheet time: 29mins
The position of the centre of gravity can always be determined by:
dividing the total moment by the total mass
dividing the total mass by the total momen
subtracting the total moment from the total mass
subtracting the total mass from the total moment
What determines the longitudinal stability of an aeroplane?
The dihedral, angle of sweepback and the keel effect
The relationship of thrust and lift to weight and drag
The location of the centre of gravity with respect to the neutral point
The effectiveness of the horizontal stabilizer, rudder and rudder trim tab
The stalling speed of an aeroplane will be highest when it is loaded with a:
low gross mass and aft centre of gravity
high gross mass and aft centre of gravity
high gross mass and forward centre of gravity
low gross mass and forward centre of gravity
During take-off you notice that, for a given elevator input, the aeroplane rotates much more rapidly than expected. This is an indication that:
the aeroplane is overloaded
the centre of gravity is too far forward
the centre of pressure is aft of the centre of gravity
the centre of gravity may be towards the aft limit
What effect has a centre of gravity close to the forward limit?
A decreased induced drag
A better rate of climb capability
A reduction in the specific fuel consumption
A reduced rate of climb
If the centre of gravity is near the forward limit the aeroplane will:
benefit from reduced drag due to the decrease in angle of attack
require less power for a given airspeed
require elevator trim which will result in an increase in fuel consumption
tend to over rotate during take-off
The operating mass of an aircraft is:
The empty mass plus crew, crew baggage and catering
The empty mass plus the trip fuel mass
The dry operating mass plus the take-off fuel mass
The empty mass plus the take-off fuel mass
For the purposes of mass and balance JAR-OPS 1 defines a child as a person aged:
Of 3 years but not having reached their fifteenth birthday
Of 2 years but not having reached 15 years old
Of 2 years but not having reached their twelfth birthday
Of 3 years but not having reached their twelfth birthday
With reference to mass and balance calculations (on an aeroplane) a datum point is used. This datum point is:
a point from which all balance arms are measured. The location of this point varies with the distribution of loads on the aeroplane
a point near the centre of the aeroplane. It moves longitudinally as masses are added forward and aft of its location
the point through which the sum of the mass values (of the aeroplane and its contents) is assumed to act vertically
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
In calculations with respect to the position of the centre of gravity a reference is made to a datum. The datum is:
calculated from the loading manifest
calculated from the data derived from the weighing procedure carried out on the aeroplane after any major modification
an arbitrary reference chosen by the pilot which can be located anywhere on the aeroplane
a reference plane which is chosen by the aeroplane manufacturer. Its position is given in the aeroplane Flight or Loading Manual
The Maximum Structural Take-off Mass is:
the maximum permissible total aeroplane mass on completion of the refuelling operation
the maximum permissible total aeroplane mass for take-off but excluding fuel
the maximum permissible total aeroplane mass for take-off subject to the limiting conditions at the departure airfield
the maximum permissible total aeroplane mass at the start of the take-off run
The Arm is the _____ (i) distance of a load as measured from the aircraft _____ (ii).
(i) horizontal (ii) forward limit
(i) horizontal (ii) datum
(i) vertical (ii) aft limit
(i) lateral (ii) datum
The chemical fluids used to charge the aircraft’ s toilets are counted as?
part of the under load
part of the payload
part of the basic empty mass
part of the variable load
For the purpose of completing the Mass and Balance documentation, the Dry Operating Mass is defined as:
The total mass of the aeroplane ready for a specific type of operation excluding all usable fuel
The total mass of the aeroplane ready for a specific type of operation excluding all traffic load
The total mass of the aeroplane ready for a specific type of operation excluding crew and crew baggage
The total mass of the aeroplane ready for a specific type of operation excluding all usable fuel and traffic load
Dry Operating Mass is the mass of the aeroplane less:
usable fuel and traffic load
traffic load, potable water and lavatory chemicals
usable fuel
usable fuel, potable water and lavatory chemicals
The actual 'Zero Fuel Mass' is equal to the:
Operating Mass plus all the traffic load
Actual Landing Mass plus trip fuel
Dry Operating Mass plus the traffic load
Basic Empty Mass plus the fuel loaded
The Regulated Take-off Mass:
is the higher of the maximum structural zero fuel mass and the performance limited takeoff mass
is the lower of maximum structural take-off mass and the performance limited take-off mass
the maximum structural take-off mass subject to any last minute mass changes
the maximum performance limited take-off mass subject to any last minute mass changes
Traffic load is the:
Dry Operating Mass minus the disposable load
Take-off Mass minus Zero Fuel Mass
Dry Operating Mass minus the variable load
Zero Fuel Mass minus Dry Operating Mass
By adding to the basic empty mass the following fixed necessary equipment for a specific flight (catering, safety and rescue equipment, fly away kit, crew), we get:
take-off mass
landing mass
zero fuel mass
Dry operating mass
What is the zero fuel mass?
The maximum permissible mass of an aeroplane with no useable fuel mass
D.O.M plus traffic load but excluding fuel
The mass of the aircraft at the start of the taxi (at departure from the loading gate)
The mass of an aeroplane plus standard items such as: unusable fuel and liquids; lubricating oil in engine & other auxiliary units; fire extinguishers; pyrotechnics; emergency oxygen equipment; supplementary equipment
The Basic Empty Mass is the:
Operating mass minus the crew and fuel load
Landing mass less traffic load
Take-off mass minus the traffic load and the fuel load
MZFM minus both traffic load and the fuel load
While making mass and balance calculation for a particular aeroplane, the term 'Empty Mass' applies to the sum of airframe, engine(s), fixed ballast plus:
all the consumable fuel and oil, but not including any radio or navigation equipment installed by manufacturer
unusable fuel and full operating fluids
all the oil and fuel
all the oil, fuel, and hydraulic fluid but not including crew and traffic load
You require 63,000 kg of fuel for your flight, the aircraft currently has 12,000 kg indicated on the gauges. How many US gallons of fuel do you request if the density is 0.81?
41, 310 US gallons
16,660 US gallons
62,960 US gallons
10, 910 US gallons
5600 USG is equivalent to how many Imperial gallons?
4848 imp
4366 imp
6338 imp
4663 imp
The determination of the centre of gravity in relation to the mean aerodynamic chord:
consists of defining the centre of gravity longitudinally in relation to the length of the mean aerodynamic chord and the trailing edge
consists of defining the centre of gravity longitudinally in relation to the length of the mean aerodynamic chord and the leading edge
consists of defining the centre of gravity longitudinally in relation to the position of the aerodynamic convergence point
consists of defining the centre of gravity longitudinally in relation to the position of the aerodynamic centre of pressure
