Controlling Flight and Aircraft Moments

What is a yawing moment?

• A force that causes the aircraft to pitch up or down.

• A twisting force trying to yaw the aircraft, caused by the deflection of the rudder.

• A lateral force that causes the aircraft to roll.

• A vertical force that affects the altitude of the aircraft.

What causes a rolling moment in an aircraft?

• A twisting force trying to roll the aircraft caused by ailerons

• A sudden change in altitude due to turbulence

• The aircraft's speed exceeding its stall speed

• The pilot's input on the control yoke

What is the function of the rudder in an aircraft?

• It controls the pitch of the aircraft.

• It causes a yawing moment about the normal axis, helps balance uneven airflow or engine forces, and is used to change the heading or align the aircraft with the airflow.

• It increases the lift generated by the wings.

• It stabilizes the aircraft during turbulence.

What is a pitching moment?

• A force that propels the aircraft forward.

• A twisting force trying to raise or lower the nose of the aircraft, caused by factors like the balance of freight, passengers, fuel, airflow over the tailplane, and force from elevators or trim tabs.

• A measure of the aircraft's speed during flight.

• A force that stabilizes the aircraft in a straight line.

How do flaps benefit an aircraft during landing?

• Flaps increase the lift at low speeds, reducing the stalling speed and allowing for shorter runways.

• Flaps decrease the drag, allowing for faster landing speeds.

• Flaps are used to increase fuel efficiency during flight.

• Flaps help in maintaining altitude during cruising.

What happens when an aircraft is flown too slowly?

• It becomes hard to control and loses its balance, a condition known as 'stalling'.

• It gains altitude rapidly and becomes difficult to descend.

• It increases speed and becomes more stable in flight.

• It maintains a steady flight path without any issues.

How do ailerons help an aircraft turn?

• Ailerons are used to control the pitch of the aircraft.

• Ailerons are hinged surfaces that cause the aircraft to roll into a turn, creating a rolling moment.

• Ailerons increase the speed of the aircraft during a turn.

• Ailerons are used to stabilize the aircraft in flight.

What is necessary to change the amount of lift produced by an aircraft's wings?

• Changing the angle of attack, or the angle at which the wing is relative to the airflow.

• Increasing the weight of the aircraft.

• Reducing the speed of the aircraft.

• Altering the shape of the fuselage.

What role do elevators play in aircraft control?

• Elevators are used to control the speed of the aircraft by adjusting the throttle.

• Elevators are moveable surfaces at the rear of the plane that cause the aircraft to pitch, changing the angle of attack and the plane's attitude relative to the airflow.

• Elevators are fixed surfaces that help stabilize the aircraft during flight.

• Elevators are used to control the lateral movement of the aircraft.