Aircraft Components Quiz

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What is the correct trim speed for the aircraft during different phases of flight?

Move slowly when trimming the aircraft during climb out and landing approach and rapidly during cruise.

Move rapidly when trimming the aircraft during the landing approach and slowly at all other times.

Move slowly when trimming the aircraft during the landing approach and rapidly at all other times.

Move rapidly when trimming the aircraft during climb out and landing approach and slowly during cruise. (correct)

What determines the direction of travel of an electrically operated variable incidence tailplane?

Solenoid operated clutches. (correct)

The direction of rotation of the electric motor.

The position of the trim wheel.

A gearbox.

On an aircraft with a variable incidence trimming tailplane, how does the tailplane incidence change?

Automatically if the elevator moves.

If the control column is moved back or forward.

The tailplane incidence does not change.

If the trim wheel is turned back or forward. (correct)

What is the purpose of horn balance and inset hinge balance installed on control surface assemblies?

They have the same effect as a balance tab. Signup and view all the answers

What is the primary function of the fin on an aircraft?

To provide directional stability about the normal axis. Signup and view all the answers

Which of the following are primary control surfaces on an aircraft?

Elevators, ailerons, rudder. Signup and view all the answers

What is the effect of aerodynamic balance on control surfaces?

It will reduce aerodynamic loading. Signup and view all the answers

Which of the following can be used to reduce flutter on an aircraft?

Mass balancing. Signup and view all the answers

What does an elevator provide control over?

The lateral axis. Signup and view all the answers

What is the effect of excess aerodynamic balance on a control surface?

It will move the control surface center of pressure forwards, resulting in an unstable overbalance. Signup and view all the answers

What is the primary function of the spar web in an aircraft wing structure?

To carry shear loads Signup and view all the answers

Which component of an aircraft wing is responsible for taking the majority of the bending and shear loads?

Main spar Signup and view all the answers

If an aircraft wing has an aspect ratio of 8, what can be inferred about the relationship between its span and mean chord?

The span is 8 times the mean chord Signup and view all the answers

Which type of wing design is commonly found on commercial airliners?

Cantilever wing Signup and view all the answers

What structural components primarily define the aerodynamic profile and contour of a monospar wing?

Ribs Signup and view all the answers

What type of high-lift device is typically associated with provisions and linkages on the leading edge of a wing?

Leading edge flaps Signup and view all the answers

What is the purpose of a 'frise' aileron?

To equalize aileron drag in a turn Signup and view all the answers

Which of the following is a method of achieving aerodynamic balance of a control surface?

By a horn at the extremity of the surface forward of the hinge line Signup and view all the answers

What is the purpose of aerodynamic balancing of flight controls?

To make the flying controls easier to move Signup and view all the answers

What is a 'horn balance'?

A projection of the outer edge of the control surface forward of the hinge line Signup and view all the answers

How is a control surface mass balanced?

By the attachment of weights acting forward of the hinge line Signup and view all the answers

What is the purpose of the extension to the rudder (shaded portion shown on the diagram)?

To provide aerodynamic assistance for the pilot when moving the rudder Signup and view all the answers

What is the purpose of a balance tab?

To operate automatically to assist the pilot in moving the controls Signup and view all the answers

What can cause control surface flutter?

Excessive play in trim tab attachments Signup and view all the answers

What is the purpose of aerodynamic balancing of a control surface?

To assist the pilot in moving the control Signup and view all the answers

What is the purpose of anti-balance tabs?

To allow the leading edge of the surface to project into the airflow Signup and view all the answers

What is the primary function of the mid-spar in large aircraft?

To assist the main spar in carrying operational loads Signup and view all the answers

To which structural component is the main undercarriage attached?

The aircraft structure Signup and view all the answers

What is the final coat of sealing called in an integral fuel tank?

Brush coat Signup and view all the answers

Which structural members bear the primary loads on a wing?

Spars Signup and view all the answers

What is the purpose of ribs in an aircraft wing?

To maintain the correct airfoil contour Signup and view all the answers

Which statement best describes a cantilever wing?

A wing without external supporting struts Signup and view all the answers

Why are spars tapered from root to tip?

Bending moment is greatest at the root Signup and view all the answers

What is a spar web?

A member between the spar and wing/fuselage connection Signup and view all the answers

To what component is a leading edge slat attached?

The slat track Signup and view all the answers

What type of load does the web of an 'I' beam primarily take?

Shear Signup and view all the answers