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General Knowledge Test Flashcards

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1
Q

What is the relationship between stall speed and altitude?

A

The higher the altitude, the higher the stall speed.

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2
Q

What is the lift to drag ratio?

A

Angle of attack that produces the least amount of drag to the lift produced.

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3
Q

What can too rich a mixture do?

A

Lower combustion temperature, unburned gas is expelled and wasted through exhaust, can cause fouled plugs and loss of power.

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4
Q

What can too lean a mixture cause?

A

Hot engine, rough running, causes backfiring and detonation.

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5
Q

When on the ground, what could leaning the mixture do for you?

A

Reduce chances of spark plug fouling.

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6
Q

What axis do ailerons affect?

A

Longitudinal.

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7
Q

What axis do elevators affect?

A

Lateral.

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8
Q

What axis does the rudder affect?

A

Yaw.

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9
Q

When are wingtip vorticies at their worst?

A

Slow, clean configuration.

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10
Q

How would a forward C of G affect the longitudinal stability of an aircraft?

A

Increased stability, the wing flies at a higher angle of attack, lower speeds, more lift and more induced drag. HIGHER STALL SPEED.

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11
Q

How would a rearward C of G affect the longitudinal stability of an aircraft?

A

Decreased stability, higher cruise speed, lower stall speed, no spin recovery.

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12
Q

What is a constant speed propeller?

A

Propeller that is designed to automatically change its blade pitch to allow it to maintain a constant RPM.

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13
Q

What are the advantages of a constant speed propeller?

A

Optimized performance, fuel efficient, reduces wear on engine.

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14
Q

What are advantages of fuel-injection engines?

A

Efficient, accurate and no possibility of carb ice.

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15
Q

What are disadvantages of fuel-injected engines?

A

Suffer from vapor lock, difficult to start hot engine, difficult to start engine because of fuel starvation.

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16
Q

What are advantages of a carburetor?

A

Easier to maintain, cheaper, and are not prone to vapor-lock.

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17
Q

What are disadvantages of a carburetor?

A

Lack of efficiency, float bowl is not suited to negative gravity, prone to carb icing.

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18
Q

What are the three types of carburetor icing?

A

Fuel vaporization, throttle ice, impact ice.

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19
Q

When is carb icing at its worst?

A

-5°C to 15°C.

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20
Q

When can carb icing occur?

A

On high moisture days, -5°C to 30°C.

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21
Q

What does carb heat do?

A

Prevents ice build up in the venturi, but also reduces RPM.

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22
Q

What is vapor lock?

A

A condition, on warm days, where air enters the fuel system and may be impossible to start an engine.

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23
Q

What are the three main components of a turbocharger?

A

Turbine, compressor, shaft that connects the two together.

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24
Q

What is the turbine in the turbocharger driven by?

A

By exhaust gas leaving the engine.

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25
Q

Why are turbochargers used in aircraft?

A

To make up for the loss of manifold pressure in the engine at high altitude.

26
Q

What is a wastegate in a turbocharger?

A

To bleed off some of the manifold pressure if the turbocharger creates too much manifold pressure.

27
Q

How is a supercharger different from a turbocharger?

A

A supercharger requires engine power (crankshaft) to drive it.

28
Q

What are the five stresses?

A

Tension, torsion, shearing, bending, compression.

29
Q

What is the four-stroke cycle?

A

Intake, compression, ignition, exhaust. (Suck, squeeze, bang, blow)

30
Q

How long is one cycle of the four-stroke cycle?

A

Two rotations of the crankshaft.

31
Q

What is the airflow over the wing? Is it high or low pressure?

A

The laminar airflow, low pressure over the wing.

32
Q

Induced drag: what direction is the wind going over the wing? Under the wing?

A

Over the top is taking air in (low pressure), below is expelling air out (high pressure).

33
Q

What color is 80/87?

A

Red.

34
Q

What color is 100LL?

A

Blue.

35
Q

What color is 100 (100/130)?

A

Green.

36
Q

What color is Jet A1?

A

Clear or straw.

37
Q

How would you identify water contamination in fuel?

A

Condensation inside fuel tank; water will sink to the bottom of the tanks.

38
Q

What are the three fuselage types?

A

Truss-type, monocoque, semi-monocoque.

39
Q

What is a truss-type comprised of?

A

A frame of wood beams (bolted) or metal tubes (welded).

40
Q

What is a monocoque comprised of?

A

Stressed skin; carries all the load.

41
Q

What is a semi-monocoque comprised of?

A

Stressed skin and bulkheads; also has a firewall.

42
Q

What is ground effect?

A

The increased lift (force) and decreased aerodynamic drag that an aircraft’s wings generate when they are close to a fixed surface.

43
Q

What configuration has the greatest wingtip vortices?

A

Clean configuration, low airspeed, heavy.

44
Q

What happens if a fuel cap is left open in flight?

A

Will create a vacuum and suck the fuel out at a very fast rate.

45
Q

How do you avoid wake turbulence on take-off?

A

Rotate prior to the point at which the preceding aircraft rotated.

46
Q

How do you avoid wake turbulence on landing?

A

Stay at or above the larger aircraft’s flight path.

47
Q

What are the four functions of oil?

A

Lubricating, cooling, flushing, sealing.

48
Q

What would excessive lean mixture cause?

A

Rough running engine, high EGT temperature, damage to the engine.

49
Q

What is a coarse pitch porpeller?

A

Large angle (bigger bite of air); slower.

50
Q

What is a fine pitch propeller?

A

Smaller angle (smaller bite of air); faster and less drag.

51
Q

What are the two types of propellers?

A

Fixed pitch and variable pitch.

52
Q

What are the three variable pitch types?

A

Adjustable, controllable, constant speed.

53
Q

What instruments utilize a gyro?

A

Attitude indicator, heading indicator, and turn coordinator.

54
Q

What items are connected to the vacuum system?

A

Attitude and heading indicator.

55
Q

What are the two types of drag?

A

Parasite drag and induced drag.

56
Q

What is a stabilator?

A

A moving airfoil section that serves both s a horizontal stabilizer and elevator. (All once piece)

57
Q

What do you do to your speed in gusty conditions on landing?

A

Add half of the gust factor.

58
Q

What is wash-out?

A

The design of the wing where the angle of incidence at the tip is lower than at the root.

59
Q

What does wash-out do?

A

The wing root stalls first before the wingtip.

60
Q

What are the 2 types of truss-type?

A

A “warren” and N-girder.

61
Q

What would a blocked static port affect?

A

Airspeed indicator, altimeter and vertical speed indicator.

62
Q

What would a blocked pitot tube affect?

A

Incorrect airspeed, VSI and altimeter readings.

General Knowledge Test (1 decks)

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