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29 Cards in this Set
- Front
- Back
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The greatest wake turbulence is associated with which aircraft configuration?
A. Heavy, clean, fast B. Heavy, dirty, slow C. Heavy, clean, slow |
Heavy, clean, slow
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Of an aircraft on approach to an airport or an aircraft cruising during en route, which condition will create a greater wake turbulence effect?
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An aircraft on approach to an airport
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Of speed, configuration, and weight, which one has the greatest impact on wake turbulence?
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Weight
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What is the name for the turbulent phenomenon created by aircraft passing through the atmosphere?
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Wake turbulence
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The circular patterns created by wake turbulence are often known as what?
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“Wake Vortex’ or “Wingtip Vortices”
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For fixed-wing aircraft, vortices begin at what stage of flight?
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At rotation or when lift begins.
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At what stage of flight do vortices end for fixed-winged aircraft?
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At touchdown or when lift ends
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When observing an aircraft from behind, the circulation of vortices off the right wingtip is _______ and _______ off the left wingtip.
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counterclockwise; clockwise
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Vortices from large aircraft will sink approximately 300 feet to 500 feet per minute and level off below the flight path at approximately
A. 90 feet. B. 900 feet. C. 9,000 feet. |
900 feet
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With no wind, vortices within 100 feet to 200 feet of the ground will move ______ to ______ knots laterally across the ground.
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2; 3
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For landing aircraft, crosswinds of 1 to 5 knots tend to ______ the lateral movement of one vortex while ______ the movement of the other.
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stall; increasing
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Hazardous conditions occur when the induced roll exceeds the level of what?
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Roll control of the aircraft
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Counter control is most effective and roll is minimal when the wingspan and the ailerons extend beyond the ______ of the vortex.
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outer edges
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A hovering helicopter creates a downwash from its main rotors that can travel up to how far?
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Up to 3 times the diameter of its rotors
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What must a helicopter be doing in order to generate wingtip vortices?
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It must be in a forward flight
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What is another name for jet blast?
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Thrust stream turbulence
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Why is the controller not responsible for anticipating the existence or effects of wake turbulence?
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Because it is unpredictable
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Wake turbulence has the greatest impact on ATC in the areas of
A. damage and money. B. resources and delays. C. increased separation and traffic management delays. |
increased separation and traffic management delays
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Every aircraft generates a wake turbulence while in flight regardless of its size.
A. True B. False |
True
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Vortices are generated at the moment an aircraft begins to taxi.
A. True B. False |
False
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Which three aircraft characteristics represent the greatest generated wake turbulence?
A. Heavy, dirty, slow B. Small, clean, fast C. Large, dirty, slow D. Heavy, clean, slow |
Heavy, clean, slow
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Which factor has the greatest impact on wake turbulence?
A. Speed B. Weight C. Wing configuration D. Pilot capabilities |
Weight
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With zero wind, vortices near the ground will travel laterally at a speed of ______ knots.
A. 10 to 20 B. 5 to 10 C. 2 to 3 D. 0 |
2 to 3
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Another name for jet blast is
A. turbine wash. B. burner blast. C. jet fuel burn. D. thrust stream turbulence. |
thrust stream turbulence
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Three factors that affect the strength of wake turbulence are ______, ______, and ______.
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weight, shape of the wing, and speed
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The phenomenon created by an aircraft passing through the atmosphere is called ______.
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wake turbulence
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Vortices from large aircraft will sink at a rate of approximately ______ to ______ feet per minute.
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300, 500
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The ability of an aircraft to counteract the effects of induced roll is based on the ______ and ______ of the aircraft.
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wingspan; counter control capabilities
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In order for a helicopter to generate trailing vortices, it must be in ______.
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forward flight
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