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block

An aircraft wing is designed to produce lift resulting from a difference in the

Select the correct answer(s).  

(0/0)

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higher air pressure below the wing's surface and lower air pressure above the wing's surface

higher pressure at the leading edge than at the trailing edge.

negative air pressure below and a vacuum above the wing's surface.

vacuum below the wing's surface and greater air pressure above the wing's surface.

none

After an aircraft has been exposed to severe weather:

Select the correct answer(s).  

(0/0)

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loose snow may be left but ice must be removed.

providing the contamination is not too thick, it may be left in place.

all snow and ice should be removed

snow should be removed but smooth ice may be left.

none

The term "angle of attack" is defined as the angle:

Select the correct answer(s).  

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between the aeroplane's climb angle and the horizon.

formed by the longitudinal axis of the aeroplane and the chord line of the section.

between the section chord line and the relative wind.

formed by the leading edge of the section and the relative airflow.

none

The angle of attack of an aerofoil section directly controls:

Select the correct answer(s).  

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distribution of positive and negative pressure acting on the section.

The angle relative to the horizontal datum

amount of airflow above and below the section.

angle of incidence of the section

none

If the angle of attack is increased above the stalling angle

Select the correct answer(s).  

(0/0)

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lift and drag will both decrease

lift will increase and drag will decrease.

lift and drag will both increase

lift will decrease and drag will increase

none

Why does increasing speed also increase lift?

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The increased speed of the air passing over an aerofoils upper surface decreases the static pressure, thus creating a greater pressure differential between the upper and lower surface

The increased impact of the relative wind on an aerofoils lower surface creates a greater amount of air being deflected downward

Increasing speed decreases drag

The increased velocity of the relative wind overcomes the increased drag

none

The point on an aerofoil section through which lift acts is the

Select the correct answer(s).  

(0/0)

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centre of pressure

centre of gravity.

aerodynamic centre.

midpoint of the chord

none

Bernoulli's Theorem states:

Select the correct answer(s).  

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dynamic pressure increase and static pressure decrease.

dynamic pressure is maximum at stagnation point.

zero pressure at zero dynamic pressure.

dynamic pressure increase and static pressure increase.

none

When considering an aerofoil section at a constant angle of attack, which of the following statements is true?

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Dynamic pressure and pressure differential are not related.

If dynamic pressure is increased, the pressure differential will decrease

The pressure differential will increase if the dynamic pressure is decreased

If the static pressure on one side is reduced more than on the other side, a pressure differential will exist

none

The difference between IAS and TAS will:

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remain constant at all times.

increase with decreasing temperature.

increase with increasing density

decrease with decreasing altitude.

none

TAS is:

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equal to IAS, multiplied by air density at sea level.

lower than speed of the undisturbed airstream around the aircraft.

higher than speed of the undisturbed airstream around the aircraft.

lower than IAS at ISA altitudes below sea level.

none

The angle between the chord line of an aerofoil section and the relative wind is known as the angle of

Select the correct answer(s).  

(0/0)

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Sweepback

lift.

attack.

incidence

none

When the angle of attack of a positively cambered aerofoil is increased, the centre of pressure will

Select the correct answer(s).  

(0/0)

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remain unaffected

move forward along the chord line

have very little movement

move back along the chord.

none

Icing conditions may be encountered in the atmosphere when:

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(0/0)

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pressure is high and humidity falls.

relative humidity is high and temperature is low.

relative pressure is high and temperature is high.

relative humidity is low and temperature rises.

none

At higher elevation airports the pilot should know that indicated airspeed

Select the correct answer(s).  

(0/0)

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should be increased to compensate for the thinner air

should be higher to obtain a higher landing speed

will be unchanged, but ground speed will be faster

will be higher, but ground speed will be unchanged