11 LP wake turbulence Flashcards
Phenomenon on resulting from the passage of an aircraft through the atmosphere
Wake turbulence
Circular patterns of aircraft by the movement of an airfoil through air when generating left
Vortices
What is a byproduct of wing lift
Vortices
What are the three factors of strength of the vortex
Wait, shape of the wing, speed
When is the greatest vortex strength generated
When the aircraft is heavy, clean, slow
What is the greatest factor that affects the intensity of wake turbulence
The weight of the aircraft
A swirling Hermas off the wingtip trailing behind the aircraft
Wake vortex, wingtip vortices
Vertices are generated when
At the moment the aircraft generates lift, normally when the nose wheels leave the ground.
Cortices discontinue at the moment the aircraft
Starts generating lift, normally when all landing gear his touchdown
Vortices from large aircraft normally level off ______ to ______ below the flight path
500 to 1000 feet
Vortex movement at the ground with no wind will travel how fast
2 to 3 kn laterally
When observing an aircraft from behind, the circulation of vortices off the right wing tip is ______and ______ off the left went to
Counterclockwise, clockwise
Vortices from large aircraft will sink approximately _____ feet to _____ft./m and level off approximately _____feet below the flight path
300 feet to 500 feet,
500 to 1000’
For landing aircraft, crosswinds of 1 to 5 knots tend to ______the lateral movement of one vortex while ______ the movement of the other
Stall
Increase
The mechanical force a wake vortex has on an aircraft
Induced roll
The ability of an aircraft to move around the longitudinal axis
Roll control
That ability of an aircraft to counteract the affects of the role, counter control, is based on two things:
The wingspan of the aircraft, the counter control capability of the aircraft
Hazardous conditions occur when the induced roll exceeds the level of ____.
Roll control
Counter control of the most effective and roll is minimal when the wingspan and the ailerons extend beyond the ____of the vortex
Edge
A hovering helicopter creates a downwash from its main rotors that can travel up to how far
Three times the diameter of the rotar
What must a helicopter be doing in order to generate wingtip vortices
Be in forward flight
Jet engine exhaust, thrust stream turbulence
Jet blast
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
Increase separation and traffic management delays
