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Lesson 13
Wake Turbulence
15
Aviation
Professional
07/24/2012

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Cards

Term
The definition of “wake turbulence” includes a number of phenomenon affecting flight safety. Which of the four choices are not included in the definition-
A.Mach buffet
B.Rotorwash
C.Propeller wash
D.Jet blast
Definition
A.Mach buffet
Term
Vortices are generated at the moment an aircraft begins to ________.
Definition
leave the ground
Term
Which three aircraft characteristics represent the greatest generated wake turbulence?
Definition
Heavy, clean, slow
Term
Which factor has the greatest impact on wake turbulence
Definition
Weight
Term
With zero wind, vortices near the ground will travel laterally at a speed of ________ knot
Definition
2 to 3
Term
Vortices from large aircraft will sink at a rate of approximately ________ to ________ feet per minute.
Definition
300 – 500
Term
The ability of an aircraft to counteract the effects of induced roll is based on the ________ and ________ of the aircraft
Definition
wingspan; counter control capabilities
Term
A helicopter generates wingtip vortices when
Definition
in forward flight
Term
If you have an aircraft on approach to an airport and a similar aircraft cruising during en route flight, which would create a greater wake turbulence effect
Definition
Approach aircraft is generating more lift
Term
Vortices from large aircraft will sink approximately 300 feet to 500 feet per minute and level off approximately ______ feet below the flight path
Definition
500 to 1000
Term
. For landing aircraft, crosswinds of 1 to 5 knots tend to ________ the lateral movement of one vortex while ________ the movement of the other
Definition
stall, increase
Term
Hazardous conditions occur when the induced roll exceeds the level of
Definition
roll control
Term
Counter control is most effective and roll is minimal when the wingspan and the ailerons extend beyond the ________ of the vortex
Definition
outer edges
Term
Wake turbulence has the greatest impact on ATC in the areas of _______.
Definition
increased separation and traffic management delays
Term
When is wake turbulence stopped
Definition
Touchdown
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