Air Traffic Basics - Lp10

Front 1

_______ is the effect of the rotating air masses generated behind the wing tips of aircraft or behind the rotor tips of helicopters in forward motion.

Back 1

Wake Turbulence

Front 2

____ describes the nature of the air masses (in Wake Turbulence)

Back 2

Wake Vortex / Vortices

Front 3

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

Back 3

Vortices

Front 4

Vortices from ______to_______ aircraft can be of extremely high velocity.

Back 4

Large to Heavy

Front 5

What three factors govern the strength of a vortex?

Back 5

Weight of aircraft, Shape of the wing, Speed of the generating aircraft

Front 6

The greatest vortex strength is generated when the aircraft is _____,______,and _______.

Back 6

Heavy, Clean, Slow.

Front 7

________ refers to an aircraft's configuration when it has its gear up, no flaps extended, or any other type of wing extensions e.g. air brakes.

Back 7

Clean

Front 8

What is the greatest factor of an aircraft that affects the intensity of wake turbulence.

Back 8

Weight

Front 9

True or False.
Every aircraft generates lifts.

Back 9

True

Front 10

The __________ can be changed when the flaps are extended.

Back 10

Intensity of the vortex

Front 11

What is it called when an aircraft extends flaps, lowers the gear, or changes the configuration of the wing, this is commonly referred to as a ______ configuration.

Back 11

Dirty

Front 12

A dirty configured wing _______ the total wing area and ________ the wing loading

Back 12

Increases ; Decreases

Front 13

True or False. The slower the aircraft the larger the wake turbulence.

Back 13

True

Front 14

Strength of vortices will diminish with ____ and ____?

Back 14

Time and Distance.

Front 15

Greatest wake turbulence is associated with which aircraft configuration. (3 answers)

Back 15

Heavy, Clean, and Slow

Front 16

Pressure differential triggers a rollup of airflow, also known as _________

Back 16

Rollup Effect

Front 17

_______ effect results in two counter-rotating cylindrical vortices causing wake turbulence.

Back 17

Rollup

Front 18

Viewing the plane from the backside: What direction does the LEFT wake turn? What does the RIGHT wing turn?

Back 18

Clockwise ; Counter-clockwise

Front 19

Vortices begin at ________

Back 19

Rotation lift

Front 20

Vortices end at ________

Back 20

touched down. (Landing gear)

Front 21

Both Vortices will drift _______

Back 21

outward

Front 22

Sink rate of vortices is _____ to ______ ft/min.

Back 22

300 to 500 feet per minute.

Front 23

Vortices normally dissipate from ____ to ____ ft below the flight path

Back 23

500 to 1000

Front 24

When vortices are close to the ground with zero wind vortices will move laterally __ to __ knots

Back 24

2 to 3 knots

Front 25

Vortices are subject to __________ and ________

Back 25

Tailwind/Headwind and Crosswind

Front 26

_________ is the mechanical force a wake vortex has on an aircraft.

Back 26

Induced Roll

Front 27

Counter control is most effective and roll is minimal when the wing span and the ailerons extend beyond the ___of the vortex.

Back 27

Outer Edges

Front 28

Hazardous conditions occur when the induced roll exceeds the level of ______

Back 28

Roll Control

Front 29

Downwash from a helicopter goes in what direction? (when a helicopter is hovering)

Back 29

ALL directions.

Front 30

Helicopters will generate wingtip vortices when?

Back 30

In forward flight

Front 31

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

Back 31

Three Times the diameter of the rotor.

Front 32

Jet engine exhaust is also known as ________

Back 32

Jet Blast

Front 33

When is Jet blast normally experienced?

Back 33

During ground operations and during initial take off roll prior to lift.

Front 34

A controller is _________ for anticipating wake turbulence because it is unpredictable

Back 34

Not responsible

Front 35

Wake turbulence has the greatest impact on ATC in the areas of __________.
A.Damage and Money
B. Resources and delays
C. Increased separating and traffic management delays

Back 35

C. Increased separating and traffic management delays