Set of flashcards 021 Fragen (Page 3 of 4)

Flashcards	129
Language	Deutsch
Category	Technology
Level	Other
Created / Updated	27.05.2025 / 24.06.2025
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What is stiffness?

Stiffness limits the extent of an elastic deformation in response to an application of a defined force

Stiffness is the stress in a structure when a bending force is applied

Stiffness is a specific strength in respect to plastic deformation

Stiffness is stress multiplied with strain

The anti-skid control valve is installed:

in the return line upstream the brake metering valve

at the pilots rudder pedals

within the brake

in the pressure line downstream the brake metering valve

What could trigger a take-off warning (Take-Off configuration not set)?

Thrust lever not set into T/O-Thrust position, Flaps not in T/O-position, speed brake (lever) not down, weather radar off, cabin door not closed

Thrust lever not set into T/O-Thrust position, Flaps not in T/O-position, speed brake (lever) not down, stabilizer trim outside green band (limit), cabin door not closed

Thrust lever not set into T/O-Thrust position, Flaps not in T/O-position, speed brake (lever) not down, stabilizer trim outside green band, seat belts sign off

Thrust lever not set into T/O-Thrust position, Flaps not in T/O-position, speed brake (lever) not down, weather radar off, seat belts sign off

A framework construction is generally used within a large aircraft for the:

stabilizer construction

wing construction

floor construction

engine construction

The core material in a sandwich structure has in general...

triangular patterns

square patterns

octagonal patterns

hexagonal patterns

Hydraulic power is a function of:

Pump RPM only

Pump size and volume flow

System pressure and tank capacity

System pressure and volume flow

Large transport aeroplane may be equipped with landing gear bogies. What is significant of landing gear bogies?

The same configuration as a tricycle landing gear assembly

Two wheels side by side on a single axle

A single wheel on each main landing gear strut

A fore and aft shaft hinged to the main gear strut with the wheels symmetrically attached

Large transport aeroplane hydraulic systems usually operate with a system pressure of approximately:

2000 psi

1000 psi

4000 psi

3000 psi

Define the term "fatigue".

If a material is continually loaded and unloaded it will eventually break even though the load remains the same

A loading that breaks the material

The material suffers progressively more permanent damage each time that it is loaded and unloaded

A loading on the material which causes that material to return fully to its former state when the load is removed

Define the term "fatigue".

If a material is continually loaded and unloaded it will eventually break even though the load remains the same

A loading that breaks the material

The material suffers progressively more permanent damage each time that it is loaded and unloaded

A loading on the material which causes that material to return fully to its former state when the load is removed

Multi-disc brake unit: The heat pack consists of …

Torque Tube, Stators and Rotors, Pressure Ring and Actuators

Torque Tube, Stators and Rotors, Pressure Ring

Pressure Plate, Stators and Rotors, Pressure Ring and Actuators

Pressure Plate, Stators and Rotors, Pressure Ring

Which component of the landing gear absorbs forces acting in lateral direction?

torsion link

drag strut

shock strut

side strut

Strain is defined as the:

Deformation due to stress

Expansion due to temperature rise

Ultimate load

Yield load

Engine compartment decking and firewalls are typically manufactured from:

Composite materials such as carbon, kevlar and fibre glass

Stainless steel or titanium sheet

Aluminium alloy sheet

Asbestos blankets

A tubeless tire has:

1, 3

2, 4

2, 3

1, 4

Volumetric efficiency is:

The thermal conversion factors concerning swept volume

Swept volume + unswept volume divided by the swept volume

IHP - FHP

The amount of charge induced into a cylinder compared with that which would fill the swept volume

What is a torsion box?

Front spar, rear spar and the ribs are forming a box. Single spar wings have a torsion nose

Fuselage structure also known as wheel bay and forming a box

Front spar, rear spar and outer skin are forming a box. Single spar wings have a torsion nose

Front spar, rear spar and the ribs are forming a box. Single spar wings absorb torsional tension via the spar, the ribs and the keel beam

Which statements about wing structure (semi-monocoque) are correct?(i) The wing structure consists of upper and lower spar caps separated by a web.(ii) Two webs are separated by a spar cap.(iii) The main spar is usually located near the front of the wing.(iv) A false or auxiliary spar is usually located near the front of the wing.(v) A false or auxiliary spar is usually located near the trailing edge of the wing.

(i), (iii), (v) Are correct

(i), (iii), (iv) Are correct

(ii), (iii), (v) Are correct

(ii), (iii), (iv) Are correct

Volumetric efficiency is:

The thermal conversion factors concerning swept volume

Swept volume + unswept volume divided by the swept volume

IHP - FHP

The amount of charge induced into a cylinder compared with that which would fill the swept volume

For piston engines, mixture ratio is the ratio between the:

Mass of fuel and volume of air entering the carburettor

Volume of fuel and volume of air entering the cylinder

Volume of fuel and volume of air entering the carburettor

Mass of fuel and mass of air entering the cylinder

Single acting constant speed propeller: What counteracts the centrifugal latches?

Oil pressure

Mechanical locks

Springs

Electrical solenoid

Which statement is correct When pushing the propeller lever forward it will

relieve the governor spring decreasing the propeller RPM

relieve the governor spring increasing the propeller RPM

compress the governor spring decreasing the propeller RPM

compress the governor spring increasing the propeller RPM

The automatic mixture control capsules are sensitive to

atmospheric pressure

carburettor deck pressure

fuel flow

boost pressure

What is the function of the connecting rod

The connecting rod connects the piston the camshaft

The connecting rod connects the crank assembly to the reduction gear

The connecting rod connects the rocker arm to the valve assembly

The connecting rod connects the piston the crankshaft

What is the principle advantage of using propeller reduction gears

engine RPM to be increased with an accompanying increase in power and torque and decrease in propeller RPM

propeller RPM to be decreased without an accompanying increase in engine RPM

propeller RPM to be increased without an accompanying increase in engine RPM

engine RPM to be increased with an accompanying increase in propeller RPM

The aircraft is turned into wind prior to engine start to

Give best possible cooling once the engine is running

Shorten the take off run

Prevent stalling

Give more air to the carburettor

With which instrument(s) do you monitor the power output of an aeroplane fitted with a fixed pitch propeller?

Only RPM indicator

RPM indicator and CHT indicator

RPM and Fuel Flow indicator

RPM and EGT indicator

When the pilot moves the mixture lever of a piston engine towards a lean position the:

Volume of air entering the carburettor is increased

Volume of air entering the carburettor is reduced

Amount of fuel entering the cylinders is increased

Amount of fuel entering the cylinders is reduced

How is the oil returning flow created into the oil sump in a wet sump lubrication system?

By an oil scavenge pump

By an oil pressure pump

By gravity

By vacuum

In an air-cooled aero-engine, cooling air is directed around the cylinders:

By means of suitably shaped cylinder baffles

By fins on the cylinders

By controllable cowl flaps

By metered jets

Feathering a single acting constant speed propeller: Which forces move the blades to feather?

Spring pressure

Counter weights and oil pressure

Spring pressure and oil pressure

Oil pressure and solenoid valve lifting

With which instrument(s) do you monitor the power output of an aeroplane fitted with a fixed pitch propeller?

Only RPM indicator

RPM indicator and CHT indicator

RPM and Fuel Flow indicator

RPM and EGT indicator

When the pilot moves the mixture lever of a piston engine towards a lean position the:

Volume of air entering the carburettor is increased

Volume of air entering the carburettor is reduced

Amount of fuel entering the cylinders is increased

Amount of fuel entering the cylinders is reduced

How is the oil returning flow created into the oil sump in a wet sump lubrication system?

By an oil scavenge pump

By an oil pressure pump

By gravity

By vacuum

In an air-cooled aero-engine, cooling air is directed around the cylinders:

By means of suitably shaped cylinder baffles

By fins on the cylinders

By controllable cowl flaps

By metered jets

Feathering a single acting constant speed propeller: Which forces move the blades to feather?

Spring pressure

Counter weights and oil pressure

Spring pressure and oil pressure

Oil pressure and solenoid valve lifting

Which systems allows greater airflow around the cylinder cooling fins during high power setting operations?

baffles

air deflection plates

oil cooler shutters

cowl flaps

The operating principle of magnetos in a piston engine ignition system consists of:

Accumulating in a capacitor a low voltage current from the battery and inducing it as a high voltage current at the moment the spark is generated

Breaking the primary circuit in order to induce a low amperage, high voltage current, which is distributed to the spark plugs

Obtaining a high amperage, low voltage current in order to generate the spark

Creating a brief high intensity magnetic field that will be send through the distributor at the appropriate time

The purpose of the governor pump in a CSU (constant speed unit) is to boost the ...

scavenge pump oil pressure in order to change the blade from either fine or coarse pitch

engine oil pressure in order to change the blade from either fine or coarse pitch

oil pressure in order to change the blade to coarse pitch

operation of the CSU

An oil pressure regulator valve is fitted to:

Filter the oil

Maintain constant pressure under varying speeds

By-pass a filter during a cold start

Maintain constant temperature

021 Fragen

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