14 Questions

Questions

		1.	Wake vortex turbulence is correctly defined as:
			a.	the displaced air in the wake of the passage of an aircraft
			b.	the effect of the rotating air masses generated behind the wing tips of all
				aeroplanes
			c.	the efflux from jet engines and the wash from propellers
			d.	‘dirty’ air caused by the horizontal movement of an aeroplane through the
				atmosphere
		2.	Wake vortex turbulence is caused by:
			a.	the shape of the wing
			b.	differential speed of movement of air across the wing section
			c.	the interaction of the engine efflux/prop wash and the ‘dirty’ air from the
				wing
			d.	the disruption of airflow over a wing section when lift conditions exist
		3.	Tip vortices are characterized by:
			a.	two counter-rotating cylindrical air masses trailing aft from the aeroplane
			b.	visible disturbances like ‘streamers’ trailing from wing tips
			c.	standing waves emanating from the wing area spaced according to the speed
				of the aeroplane
	14
			d.	rotating disturbances of the air whilst the aeroplane is in the ground effect
	Questions			region
		4.	Vortex generation begins ............... and ends ...............

a.when the aeroplane moves

b.when the nose wheel lifts off

c.when lift is being generated

d.when speed exceeds V1

when the aeroplane stops

when the nose wheel touches down when lift generation stops

when speed is lower than VAT+10

5.Which of the following describes the behaviour of vortices on the ground?

a.In the absence of crosswind, the vortices move downwards and outwards from the runway centre line at a speed of approx 5 kt

b.With a crosswind, the downwind vortex is stationary and the upwind vortex moves away from the centre line at approx 5 kt

c.With a crosswind, the upwind vortex is stationary and the downwind vortex moves towards the centre line at approx 5 kt

d.With a crosswind, both vortices move away from the centre line in the upwind direction at approx 5 kt

6.The strongest vortices are generated by:

a.heavy aeroplanes, travelling fast, in a ‘clean’ configuration

b.heavy aeroplanes, travelling fast, in a ‘dirty’ configuration

c.heavy aeroplanes, travelling slow, in a ‘clean’ configuration

d.heavy aeroplanes, travelling slow, in a ‘dirty’ configuration

190

			Questions		14
	7.	Which of the following conditions is worst with regard to wake vortex turbulence?
		a.	Light winds near the surface
		b.	Strong winds near the surface
		c.	Marked vertical windshear
		d.	Marked atmospheric turbulence near the ground
	8.	When comparing vortex generation between aeroplanes and helicopters:
		a.	aeroplanes generate more intense vortices per kg gross mass
		b.	a helicopter always generates more intense vortices because the diameter of
			the rotor is greater than a propeller
		c.	propeller aeroplanes generate more intense vortices than helicopters of the
			same gross mass
		d.	helicopters generate more intense vortices per kg gross mass than aeroplanes
	9.	ICAO categorizes aeroplanes with a max gross take-off mass of 138 000 kg as:
		a.	upper medium
		b.	medium
		c.	heavy
		d.	Cat D
	10.	Where a medium category aeroplane is landing behind a heavy category
		aeroplane, the minimum separation distance in NM is:
						14
		a.	3
						Questions
		d.	6
		b.	4
		c.	5
	11.	Where a light category aeroplane is landing behind a heavy category aeroplane,
		the minimum separation distance in NM is:
		a.	3
		b.	5
		c.	4
		d.	6
	12.	Where a light category aeroplane is landing behind a medium category aeroplane,
		the minimum separation distance in NM is:
		a.	6
		b.	5
		c.	4
		d.	3
	13.	Where a light or medium category aeroplane is taking off behind a heavy category
		aeroplane on the same runway and from the same point, the minimum separation
		spacing in minutes is:
		a.	1
		b.	2
		c.	3
		d.	4

191

14 Questions

	14.		Where a light category aeroplane is taking off behind a medium category
			aeroplane on the same runway but the following aeroplane is departing from an
			intermediate point, the minimum separation spacing in minutes is:
			a.	1
			b.	2
			c.	3
			d.	4
	15.		Where parallel runway operations are being conducted and the runways are
			separated by 750 m:
			a.	the same wake turbulence separation criteria as single runway operations
				apply
			b.	the separation is reduced to 2 minutes
			c.	there is no need to apply separation
			d.	separation is only applied if the net flight paths from the parallel runways
				cross at a distance of not more than 5 NM from the departure end of either
				runway.
	16.		Where parallel runway operations are in use and the projected flight path of the
			following aeroplane crosses that of the leading aeroplane at the same level or
			within 1000 ft lower:
			a.	the same wake turbulence separation criteria as single runway operations
	14			apply
			b.	the separation is reduced to 2 minutes
	Questions
			c.	cross at a distance of not more than 5 NM from the departure end of either
				there is no need to apply separation
			d.	separation is only applied if the net flight paths from the parallel runways
				runway
	17.		What is the minimum separation to be applied where a medium category
			aeroplane is about to take off after a heavy category aeroplane has made a missed
			approach in the opposite direction?
			a.	1 minute
			b.	2 minutes
			c.	3 minutes
			d.	4 minutes
	18.		The medium aeroplane taking off in Q17 is doing so on a parallel runway to
			the runway on which the heavy has just carried out the missed approach in the
			opposite direction. Is there any change in the separation standard applied?
			a.	Yes, the separation is halved
			b.	No, providing the runways are less than 760 m apart
			c.	Yes, they are changed to a separation distance
			d.	Yes, the separation is doubled

192

Questions 14

Questions 14

193