The Empennage How Stabilizers Reduce Unwanted Axial Movement How the Rudder Produces Yaw How the Elevator Controls Pitch Recap: Eo M231.01 & Eo M231.03
100
An aircraft’s empennage is very often called the...
Tail section
100
The control surfaces are held straight
by...
The passing wind.
100
Where is the rudder located?
At the back of the empennage.
100
Where is the elevator control surface located?
The elevator control surface is located on the trailing edge of the horizontal stabilizer.
100
What are the four forces of flight?
Lift, Weight, Thrust, Drag.
200
The vertical stabilizer on the empennage.
The fin
200
Air moving past the flat surfaces of the stabilizers tends to ____ a change of direction.
Resist
200
What is the rudder used for?
To produce controlled yaw by rotating the aircraft about its vertical (yaw) axis.
200
There is normally a ___ and a ____ section in the elevator.
Left and Right
200
What are the two propelling forces of flight?
Lift and Thrust.
300
The horizontal stabilizer on the empennage.
The tailplane
300
What axial movement does the vertical stabilizer or fin reduce?
The vertical stabilizer reduces unwanted roll and unwanted yaw.
300
The rudder is located at the very back of the aircraft, hinged to the ______ of the fin.
Trailing Edge
300
Raising the elevator into the moving air above the tailplane will push the empennage...
Down.
300
What are the two burdening forces of flight?
Weight and Drag.
400
Which two moveable control surfaces are located in the empennage?
The rudder and elevator.
400
What axial movement does the horizontal stabilizer or tailplane reduce?
The horizontal stabilizer reduces unwanted roll and unwanted pitch.
400
When the bar or pedals are level the rudder is...
Straight
400
How does the pilot operate the elevator?
The pilot pushes on the control column to descend and pulls back to climb.
400
What is the equilibrium?
When the forces are at an balance and none are acting over the other.
500
What axial movements do the elevator and the rudder produce?
The rudder changes yaw around the vertical axis and the elevator changes pitch around the lateral axis.
500
How do stabilizers reduce unwanted axial movements?
Air moving past the flat stabilizer surfaces tends to resist any change of motion.
500
What controls the rudder?
A set of pedals in the cockpit.
500
What axial movement does the elevator control?
The elevator controls pitch around the aircraft’s lateral axis.
500
What are the axial movements and the each of the axis?
Roll, Longitudinal Axis. Pitch, Lateral Axis. Yaw, Vertical Axis.






Eo M231.05 - Describe Aircraft Control Surfaces - TP 5 - by FSgt Li (Largely inspired by CPO2 Anderson)

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