Aircraft Systems part 3(Pressurisation, Oxygen, Icing)

Question 1

The type of component used to pass all surplus pressure air out of the cabin -

Answer 1

outflow valve

Question 2

Which type of cabin air pressure valve?

This prevents cabin pressure from exceeding a predetermined differential pressure above ambient, ie cabin pressure is reduced to prevent the fuselage from exploding

Answer 2

Pressure relief valve

Question 3

Which type of cabin air pressure valve?

This prevents the ambient pressure from exceeding the cabin pressure, ie cabin pressure is increased to prevent the fuselage from collapsing

Answer 3

Vacuum relief valve

Question 4

Audible and visual, a red light, warnings occur on the flight deck if the cabin pressure reaches?

Answer 4

10 000ft

Question 5

Outflow valves shut automatically if the cabin pressure reaches?

Answer 5

13 000ft

Question 6

passenger oxygen masks are automatically deployed if the cabin pressure reaches?

Answer 6

14 000ft

Question 7

What type of pressurisation failure:

Commonly a fault with the controller, control system or malfunction of the outflow valve. If the problem cannot be solved the pilot should remain below 10 000ft or, if already above that altitude descend to 10 000 ft, ensure that crew and passengers are using oxygen, or terminated the flight.

Answer 7

Lack of pressurisation

Question 8

What type of pressurisation failure:

The cause can also be linked to the controller, control system of outflow valve. The action to be taken would include manually depressurising the system gradually, at the same time beginning descent and use oxygen as required

Answer 8

Rapid pressurisation

Question 9

What type of pressurisation failure:

This is a natural loss of air but should be compensated for by the pressurisation system, but where it is not then the fault can probably be traced to air inflow problems.

Answer 9

Leakdown

Question 10

Considering the diluter demand oxygen system, if there is smoke in the cabin the crew should select?

Answer 10

The emergency setting

Question 11

the diluter demand oxygen system is used by -

Answer 11

flight crew

Question 12

The type of oxygen system used on light aeroplanes with a pilot and up to 5 passengers, and also on modern large passenger jet aeroplanes.

Answer 12

Continuous flow system

Question 13

The type of oxygen system on large passenger jet aeroplanes not requiring compressed oxygen bottles?

Answer 13

Solid state or chemical system

Question 14

The type of oxygen system used for continuous operation between 35 000 - 45 000ft?

Answer 14

Pressure demand system

Question 15

In America, and any countries other than America, what is the colour of oxygen cylinders?

Answer 15

green

black and a white top

Question 16

Difference between de-icing and anti-icing?

Answer 16

De-icing describe methods to remove ice once it has formed

Anti-icing is used to describe methods to prevent ice from forming

Question 17

which type of de-icing system:

The type of de-ice method that incorporates an inflatable rubber boot situated on the leading edge of the wing, tailplane and fin.

Answer 17

Pneumatic De-icing system

Question 18

which type of de-icing system:

Turbine powered aeroplanes are ideally suited for this type of system because a supply of hot air is readily available from the compressor section of the engine. Other systems make use of combustion heaters, or ducted ram air which is passed through a heat exchanger mounted in the exhaust gas system.

The leading edges of the wings, tailplane, vertical fin and engine air intakes contain a second, or inner, skin, which is so constructed as to allow a small gap between it and the inside of the leading edge skin.

Answer 18

Thermal de-icing/anti-icing system

Question 19

which type of de-icing system:

Although some aeroplanes may make use of partial wing leading edge de-icing of this type, the use of this type is mostly limited to components such as:

Pitot heads
Static vents
Stall warning transmitters
Engine air intakes
Propeller blades

Answer 19

Electrical de-icing/anti-icing systems

Question 20

In order to limit damage to intake and propeller de-icing systems, the electrical system is so wired that an undercarriage -

Answer 20

squat switch prevents the system from being operated on the ground

Question 21

The type of fluid used for de-icing/anti-icing

Answer 21

Isopropyl alcohol, ethylene glycol.

Question 22

Which type of de-icing/anti-icing system:

fluid is pumped through microscopic holes in the leading edge of the wing or other surface. As the fluid is released it breaks the ice away and both are blown away by the airflow.

Answer 22

Weeping wing

Question 23

windshield wipers are only used for?

Answer 23

glass windshields since plastic will scratch

Question 24

Which type of rain repellent system:

This system is used in large aeroplanes often in conjunction with windshield wipers. the chemical is carried in pressurised can in the aeroplane and is activated by a control switch in the cockpit.

Answer 24

Chemical rain repellent systems

Question 25

Which type of rain repellent system:

Windshield wipers suffer from two basic weaknesses. During intervals of heavy rain the speed of oscillation of the blades of the blades is often inadequate, and the wiper blade pressure on the windshield is reduced by aerodynamic forces resulting in poor wiping or streaking. This system is used to rectify.

Answer 25

Pneumatic rain removal system

Question 26

The type of ice detection system that utilises two electrical contacts, if they make contact, ice is present due to the four holes being blocked causing a reduction in pressure.

Answer 26

Pressure operated ice detector head

Question 27

The type of ice detection system, which utilises an AC motor. If the motor torque requirement increases, which signals that ice has formed.

Answer 27

Serrated rotor ice detector head

Question 28

The type of ice detection system, which utilises a frequency of 40 KHz. As ice forms on the probe the frequency decreases which signals that ice has formed

Answer 28

Vibrating rod ice detector head