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EASA Aircraft General Knowledge > Lecture notes > Flashcards

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1
Q

Widely used material for aircraft construction

A

Alominium alloy, duralumin

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2
Q

What type of wing does a cessna have

A

High wing with strut

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3
Q

Aluminium alloys have

A
  • High thermal and electrical conducitivity
  • Good corrosion resistance
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4
Q

Titanium

A

Lightweight, high strength, corrosion and tmp resistant. But very expensive

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5
Q

Two types of wing support

A

Braced
Cantilever

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6
Q

Which aircraft has braced support wing?

A

Cessna

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7
Q

Cantilever is

A

Self-supporting wing

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8
Q

Wings structure is made of

A

Ribs and spars

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9
Q

Wing torque box

A

Carries all the aircraft loads on the fueslage, in the center between the wings

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10
Q

Flutter

A

Self-exciting vibration under interaciton of aerodynamic force.

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11
Q

How can flutter be avoided

A

By a proper mass and balance of the CONTROL SURFACE by moving CG onto or ahead of the hinge line

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12
Q

MZFW

A

Maximum Zero fuel weight. The maximum aircraft weight with fuel allowed

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13
Q

Types of fuselage structures

A

Framework, Monocoque, Semi-Monocoque, reinforced steel

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14
Q

Framework (structure)

A

Small airplanes, the framework takes all the loads

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15
Q

Monocoque

A

External skin takes the load, made of framers (formers) to give its shape. Is heavy.

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16
Q

Semi-monocoque

A

Skin takes majority of load by framers, longerons and stringers reinforce the skin and prevent deformation

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17
Q

Reinforced steel

A

Comes from semi-monococuue, additional metal placed around apertures to provide more xsterngth.

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18
Q

Honeycomb structure

A

Two layers of metal in between which a honeycomb shaped. Increase strength

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19
Q

Flight windows are made of

A

Laminated glass or acrylic

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20
Q

Active hyraulic system

A

System pressuizerd by a pressure pump (engine driven or air driven)

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21
Q

Passive hydralulic system

A

Not pressurized by a pressure pump (hand or foot operated pumps used)

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22
Q

If an hydraulic fuel is leaking internally,

A

Temparature of the fluid will rise

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23
Q

Types of wheel connections

A

Cantilever, Fork, half fork, dual wheels

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24
Q

Advantages of oleo leg/shock strut

A
  • Sustain long periods in static load condition (parked)
  • Absorb impact of landing
  • Control the recoil of the landing
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25
Q

Shock absorbers can be: 3

A

Oleo pneumatic
Oil compression
Spring suspension (C172)

26
Q

Torque link use

A

Prevent inner and outer cylinder from rotating on each other

27
Q

Brakes convert ____ energy into ____ energy

A

Kinetic, heat

28
Q

Types of brakes

A

Drum, single disc, multiple disc

29
Q

Single disc brake

A

Disc is driven by the wheel and has two stationary brake pads on each side. Two hyd. pistons squeeze the disc when brakes are applied

30
Q

Multiple disc brake

A

Same as single disc, but multiple discs. Used on large aircrafts

31
Q

Tyre main componenst

A

Tread, belt, sidewall, bead

32
Q

The tyre tread provides us indication of

A

wear and grip

33
Q

Tyre wear, under-inflation leads to wear at the

A

shoulders

34
Q

Over-inflation leads to wear in

A

crown

35
Q

Hydroplaning

A

Where tyre loses contact with surface and slides on water

36
Q

Tyre creep

A

Tendency for the tire to slip about wheel.
An example of no creep

37
Q

The primary flight controls are controlled by

A

direct mechanical linkage

38
Q

Icing can be prevented / eliminiating using 3

A

Pneumatic pressure,
Electrical heat
Fluid (alcohol spray)

39
Q

Fuel tanks types may be

A

-Flexible(bag)
-Rigid (aluminion aloy or plastic)
-Intergal (spars, ribs) used on large aircraft

40
Q

Fuel tanks must:

A
  • Have sufficient space to allow contents to expand when heated
  • Baffles placed around so that fuel moves around the tank at manouvers
41
Q

Venting the fuel tanks helping

A

Adjust the pressure inside the tanks to the outside pressure

42
Q

Two ways of feeding the engine with fuel

A

Gravity-fed system
Fuel pumps

43
Q

Coulombs

A

Electric charge 1A flow per second is 1C passing a point a second

44
Q

Electricity flows with the flow of electrons from ____ to ____

A

Negative to positive

45
Q

When a battery is almost fully discharged, there is a tendency for the voltage to

A

decrease

46
Q

For a rotating armature, to create DC we need a

A

comutator instead of slip rings

47
Q

Inverter is

A

a unit to conver DC to AC

48
Q

“Hot bus” or “direct bus” is a definition for a bus that is

A

directly connected to the battery

49
Q

Shock cooling

A
50
Q

An increase in RPM will _____ the AoA of the propellor

A

Incraese

51
Q

An increase in TAS will _____ the AoA of the propller

A

Decrease

52
Q

Supercharger and magneto to recap

A
53
Q

Supercharger

A

Engine driven air-pump which increases manifold pressure and forces fuel/air mixture into cylinders. The higher the manfiolrd pressure, the more dense the fuel/air and more power the engine will produce

54
Q

Brake horsepower

A

Actual amount of power delivered to the propeller shaft

55
Q

3 types of pressure gauges mechanisms

A

Aneroid (low pressure)
Bellows (Intermediate)
Bourdon tube (high)

56
Q

Turbocharger

A

Same as supercharger but used air from the exhaust

57
Q

True altitude

A

Actual height of an object ABOVE MEAN SEA LEVEL (not HEIGHT!!!)

58
Q

Denity altitude

A

Pressure altitude corrected for non-standart temp.

59
Q

TAS formula

A

1.75% CAS per 1000 of altitude

60
Q

ANDS (compass errors)

A

Accelerate North, Decelrate South

61
Q

An acceleration will show an apparent turn to the

A

north

62
Q

A deceleration will how an apparent turn to the south

A

EASA Aircraft General Knowledge (14 decks)

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