Aerodynamics Flashcards
Adverse Yaw
A condition at the beginning of a turn in which the nose of the aircraft starts to move in the direction opposite the direction the turn is being made
Adverse yaw is caused by
Caused by the induced drag produced by the downward-deflected aileron holding back the wings as it begins to rise
Slipstream Effect
What produces this effect and around what axis?
Rotating prop produces a corkscrew shaped airstream about the longitudinal axis
Slipstream Effect
What aircraft surfaces does this effect strike?
The slipstream strikes the wing root, fuselage, and tail surfaces with a constant high-energy force proportional to power setting and airspeed
Slipstream Effect
How does this effect the T-6?
Induces a slightly higher AOA on the left wing root and left tail surfaces.
Slightly lowers AOA on the right wing root and right tail surfaces.
Slipstream Effect
How is it countered in the T-6?
Apply right rudder to counter the yaw that is induced to the left
P-Factor
What is this caused by?
Caused by AOA being higher on the downward-moving propeller blade than on the upward-moving propeller blade
P-Factor
When is this effect most noticable?
Low speeds and high AOA with power on
P-Factor
How is this countered?
Apply right rudder to maintain coordinated flight
Torque
What direction does the T-6 roll as a result of torque when power is increased or decreased?
Aircraft rolls to the left when power is increased
Aircraft rolls to the right when power is decreased
Torque
What is the primary means for compensating for engine torque?
Rudder and TAD (Trim Aid Device)
Adverse Yaw
How is adverse yaw counteracted?
Overcome by use of rudder in the same direction as as the aileron control stick pressure
Approach Configuration
When is an early perch required?
When the wind pushes aicraft into the runway
Approach Configuration
When is a late perch required?
When the wind pushes the aircraft away from the runway
Approach Configuration
Final Approach
How is the aileron and rudder positioned when there is a crosswind?
Aileron turn into the wind,
Rudder opposite of the turn
