11.3 C stabilises Flashcards
(12 cards)
What are the stabilisers on an aircraft primarily responsible for?
A. To power the aircraft’s propulsion system
B. To stabilise the aircraft in flight
C. To control the aircraft’s speed
B. To stabilise the aircraft in flight
What is the primary function of the horizontal stabiliser on an aircraft?
A. To provide pitch control stability
B. To control engine thrust
C. To control the aircraft’s roll
A. To provide pitch control stability
What are the three types of horizontal stabilisers used in aircraft?
A. Fixed stabiliser, stabilator, and variable incidence tailplane
B. Fixed wing, adjustable tailplane, and stabilator
C. Moveable tail, static stabiliser, and adjustable rudder
A. Fixed stabiliser, stabilator, and variable incidence tailplane
What is the key characteristic of a fixed stabiliser, often referred to as a ‘tailplane’?
A. It is a one-piece all-moveable tail.
B. It has two fixed aerofoils joined together by a structural center section.
C. It pivots up and down from a central hinge point.
B. It has two fixed aerofoils joined together by a structural center section.
What distinguishes a stabilator from other types of horizontal stabilisers?
A. It is a one-piece all-moveable tail that pivots up and down from a central hinge point.
B. It has two fixed aerofoils that do not move.
C. It is only used for pitch control and requires an additional control surface for movement.
A. It is a one-piece all-moveable tail that pivots up and down from a central hinge point.
What is a variable incidence tailplane in an aircraft?
A. A one-piece all-moveable tail where elevators are attached to the trailing edge and positioned by the control column.
B. A fixed stabiliser with a horizontal aerofoil that does not move.
C. A stabiliser with separate, moveable elevator surfaces for pitch control.
A. A one-piece all-moveable tail where elevators are attached to the trailing edge and positioned by the control column.
What is the purpose of the vertical stabiliser on an aircraft?
A. To provide lift and control the aircraft’s altitude.
B. To give the aircraft directional stability and control yaw movements with the rudder.
C. To control the pitch of the aircraft.
B. To give the aircraft directional stability and control yaw movements with the rudder.
How is the vertical stabiliser typically attached to the fuselage?
A. By high tension bolts through the fin-to-body attach angles, strengthened by body fittings, splice plates, and stiffeners.
B. With rivets along the leading edge and a welded joint at the base.
C. Through hydraulic bolts and a reinforced rear wing.
A. By high tension bolts through the fin-to-body attach angles, strengthened by body fittings, splice plates, and stiffeners.
What components are commonly used in the construction of stabilisers, similar to those found in wing construction?
A. Spars, ribs, stringers, and skin.
B. Hydraulic actuators, mounting brackets, and fasteners.
C. Propellers, nacelles, and firewall panels.
A. Spars, ribs, stringers, and skin.
Where are the main control surfaces, like the rudder and elevator, attached to the airframe on a fixed-wing aircraft?
A. To the engine nacelle.
B. To the stabiliser structure at the rear spar.
C. To the wing’s leading edge.
B. To the stabiliser structure at the rear spar.
How are the rudder and elevator typically moved on most aircraft?
A. By a mechanical system only.
B. Through hinges or fittings that allow movement with hydraulic actuators.
C. By direct manual control via cables.
B. Through hinges or fittings that allow movement with hydraulic actuators.
In the configuration of control surface attachment, what does the hydraulic actuator do?
A. It locks the control surface in place.
B. It assists in moving the control surface, allowing it to pivot back and forth or up and down.
C. It controls only the rudder movement, not the elevator.
B. It assists in moving the control surface, allowing it to pivot back and forth or up and down.
