ATC Systems Wake Turbulence

Of speed, configuration, and weight, which one has the greatest impact on Wake Turbulence? __________________

Weight

The greatest wake turbulence is associated with which aircraft configuration?

Heavy, Clean, Slow

If you have an aircraft on approach to an airport and a similar aircraft crusing during enroute flight, which would create a greater wake turbulence effect?

An aircraft on approach to an airport

Vortices extend_______________ and_______________an aircraft.

behind ; below

For fixed-wing aircraft, vortices begin at what stage of flight?

At rotation or when the lift begins.

Vortices from large aircraft will sink approximately__________feet to____________feet per minute.

300, 500

Vortices will level off approximately how many feet below the flight path?

500 to 1000 feet

With no wind, vortices within 100 feet to 200 feet above the ground will move_________to__________knots laterally across the ground?

2, 3

A hovering helicopter creates a downwash from its main roters that can travel up to how far?

It travels up to 3 times the diameter of its rotor.

There are two primary impacts to ATC operations involving wake turbulence. Name both of them.

Increased separation and Traffic Management delays

True or False

VFR aircraft and Wake Turbulence. In Class B and C airspace, participation in ATC services is mandatory

True

A small aircraft following a heavy aircraft on departure on the same runway must have either of two types of Wake Turbulence separation. Name both of them.

2 minute delay or 5 miles radar separation

When do fixed wing aircraft stop generating vortices?

At touchdown or when lift ends

The biggest danger to a trailing aircraft is induced roll caused by?

Vortex Rotation

Vortex rotation moves two ways off the wings. Name the direction of the rotation off the Left wing and the rotation off the right wing.

left wing is clockwise

right wing is counter clockwise

The Vortex Sink is how many feet per minute?

300 to 500 feet

The circular patterns created by wake turbulence are often know as what?

Wingtip Vortices

________ _____________is the phenomenon resulting from the passage of an aircraft through the atmosphere.

Wake Turbulence

____________are circular patterns of air created by the movement of an airfoil through the air when generating lift.

Vortices

True or False? Clean configured aircraft flying a lower speeds create more wake turbulence.

True

__________ __ _________creates wing tip vortices.

Roll Up Effect

True or False? For aircraft operating in Class D or E controlled airspace it is the pilots responsibility to maintain a safe distance for aircraft requiring wake turbulence separation.

True

Continuing with Question 22, ATC will assist the pilot when advising them of wake turbulence by stating the phrase ___________ ______ ______!

Caution Wake Turbulence

True or False? On a Visual Approach, it is the pilots responsibility to maintain a safe distance from the aircraft requiring wake turbulence separation.

True

What is the name for the turbulent phenomenon created by aircraft passing through the atmosphere?

Wake Turbulence

Tower, TRACON, and Enroute contain how many categories each?

11, 6, 5

What are the categories of wake turbulence?

Vortices

Thrust

Stream Turbulence

Jet Blast

Jet Wash

Propellor Wash

Rotor Wash