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D Large, heavy, at low speed in clean configuration







To avoid wake turbulence, when departing behind a larger aircraft, the pilot should

manoeuver:


a Below and downwind from the larger aircraft

b Above and downwind from the larger aircraft

C Above and upwind from the larger aircraft

d Below and upwind from the larger aircraft


a drag

B lift


Tip vortices which are responsible for wake turbulence appear as soon as the

following is established:


c spin up

d lift destruction

 


 

 




 

Wake turbulence risk is highest:


a if, just before landing a much lighter aircraft has landed at the same runway with heavy crosswind.

B when a heavy aircraft has just performed a take-off at a closely situated parallel runway with a light crosswind.

c following a preceding aircraft at high speed.

d when a preceeding aircraft has briefly applied take-off thrust just prior to take off.



The wake turbulence is greater when the aircraft has a:


a high weight and high speed

B high weight and low speed

c low weight and low speed

d low weight and high speed



The wake turbulence is greater when the aircraft has a:


a low weight, high speed, gear and flaps up

b high weight, high speed, gear and flaps up

c low weight low speed, gear and flaps down

D high weight, low speed, gear and flaps up



An airplane creates a wake turbulence when:


A generating lift.

b flying at high speed.

c using a high engine R.P.M.

d flying with its gear and flaps extended.



The tip vortices circulate about each wing tip:


a counterclockwise.

b clockwise.

C from the underwing toward the upper side of the wing.

d from the upper side of the wing toward the underwing.



When taking-off after a widebody aircraft which has just landed, you should take-off


a in front of the point where the aircraft's wheels have touched down.

B beyond the point where the aircraft's wheels have touched down.

c at the point where the aircraft's wheels have touched down and on the wind side of the runway.

d at the point where the aircraft's wheels have touched the ground and on the underwind side of the runway.



The wake turbulence caused by an aircraft is mainly the result of: 1. An

aerodynamical effect (wing tip vortices). 2. The engines action (propellers rotation

or engine gas exhausts). 3. The importance of the drag devices (size of the landing

gear, of the flaps, etc.). The combination regrouping all the correct statements is:


a 1, 2 and 3.

b 3.

c 2 and 3.

D 1.

 


 



274


 

When taking-off behind a wide-body aircraft, with wind coming from the right side,

you adopt a path, whenever possible:


a identical to the one of the preceding airplane.

b distinct from the preceding airplane, by remaining on the left of and under its path.

C distinct from the preceding airplane, by remaining on the right of and above its path.

d different from the preceding airplane, by remaining behind it and under its path.



When taking-off behind a wide-body aircraft, with wind coming from the left side,

you adopt a path, whenever possible:


a distinct from the preceding airplane, by remaining at the right of and under its path.

B distinct from the preceding airplane, by remaining at the left of and above its path.

c identical to the one of the preceding airplane.

d distinct form the preceding airplane, by remaining behind it and under its path.



The time needed for the dissipation of a turbulent wake created by a wide-body

aircraft during take-off is about:


A 3 minutes.

b 30 seconds.

c 1 minute.

d 10 minutes.



Without wind, the tip vortices created by an airplane at take-off:


A separate on each side of the runway.

b stagnate on the runway.

c separate to the right side.

d separate to the left side.



The wake turbulence:


a starts when pulling out the drag devices and stops when rectracting the drag devices.

b starts as soon as the aeroplane is running for take-off and stops as soon as it has come to a stop at landing.

c starts when the airplane reaches a height of 300 ft above the ground and stops when it crosses this height before landing.







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