Wake Turbulence Recurrent A v4.0 Flashcards
What is the greatest hazard from wake turbulence?
Induced roll and yaw
What is the vortex sink rate?
300-500 feet per minute
What are the principles behind a wing tip vortice?
Pressure differential on the top of the wing versus the bottom of the wing causes the air to circulate and trail from each wingtip.
Where will you encounter the largest vortices? (3 items)
- Heavy
- Clean
- Slow
When it comes to avoiding wing tip vortices caused by helicopters, what area should you avoid?
Avoid operations within distances of 3 times rotor diameter.
LOC-I
Loss of Control Inflight
Once vortices settle to the ground how fast to they move laterally?
They move at about 5 knots laterally
What wind condition must a pilot exercise the most caution in terms of wake turbulence?
A light quartering tailwind.
Wake turbulence begins at the point of _____________
Rotation
What is the definition of a “Closely Spaced Parallel Runway”?
Being less than 2,500’ apart
WTMD
Wake Turbulence Mitigation Departure
What are three questions that you could ask yourself in order to mitigate wake turbulence?
- Is your flight path crossing any runways?
- Are parallel runway operations in effect?
- What are the surface winds?
What are the six wake turbulence aircraft categories? (EU)
F- Light
E- Lower Medium
D- Upper Medium
C- Lower Heavy
B- Upper Heavy
A- Super Heavy
What are the nine wake turbulence aircraft categories? (FAA)
A, B, C, D, E, F, G, H, I
What are three categories that determine where each aircraft is assigned in a wake category designation?
- Wingspan
- Maximum Takeoff Weight (MTOW)
- Ability to withstand a wake turbulence encounter
