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Wake Turbulence

Block 2

QuestionAnswer
What is wake turbulence? disturbance in the atmosphere that occurs when an aircraft produces lift and passes through the air
Wake turbulence can also be known as? vortices, thrust stream turbulence, jet blast, jet wash, propeller wash, and rotor wash both on the ground and in the air.
Factors Affecting Wake Turbulence Intensity. -Weight of aircraft -Shape of wing -Speed of the generating aircraft
The greatest vortex strength is generated when an aircraft is what? Heavy, clean and slow
The strength of these vortices will diminish with ___ and ___. time, distance
The greatest factor that affects wake turbulence is? Weight of the aircraft
What is clean configuration? A clean configured wing allows for a stronger vortex to be generated because, without flaps, the wing has a smaller area and wing loading is therefore greater per square foot.
What is dirty configuration? A dirty configuration wing increases the total wing area and decreases the wing loading. The flaps also disrupt the airflow over the wing and break down the formation of the vortex.
Which aircraft would create a greater wake turbulence effect? Aircraft on approach to the airport
Vortex circulation off the wingtip is ____ off right wing, ___ off left wing. counterclockwise , clockwise
When are vortices generated? At the moment the aircraft generates lift
Vortex sink rate 300 to 500 feet per minute
Vortices level off where? 500 to 1,00 feet below the flight path
When close to the ground (100 to 200 feet) and there is zero wind, vortices from larger aircraft will move ____ 2 to 3 knots laterally
What is/are the name(s) given to the circular patterns created by wake turbulence? wake vortex and/or wingtip vortices
An aircraft's ability to counteract the effects of a vortex roll are wingspan of the aircraft and counter control capability of the aircraft
Why would extra spacing be necessary when smaller aircraft are following larger aircraft at a terminal environment? To avoid the aircraft’s wake turbulence vortices
Counter control is most effective and roll is minimal when the wingspan and the ailerons extend beyond the __________ of the vortex. outer edges
In a slow hover taxi or stationary hover, helicopters create Downwash
Downwash circulation is outward, upward, around, and away from the main rotors in ALL directions
Helicopters will generate a pair of wingtip vortices when in __ forward flight
What is jet blast? jet engine exhaust (thrust stream turbulence)
when issuing a cautionary advisory during ground operations, controllers may use the following terms in lieu of the term “wake turbulence” • Jet blast • Prop wash • Rotor wash
The greatest impact wake turbulence has on ATC is increased separation for: -Tower operations, both ground and airborne - Radar operations for both approach and en route environments
A hovering helicopter creates a downwash from its main rotors that can travel how far? 3 times the diameter of its rotors
Why is the controller NOT responsible for anticipating the existence or effects of wake turbulence? Because it is unpredictable
Wake turbulence has the greatest impact on ATC in the areas of __________. increases separation and traffic delays
Created by: user-1843252
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