Aircraft Structure Quiz
Aircraft Structure Mastery Quiz
Test your knowledge of aircraft structures with our comprehensive quiz designed for aviation enthusiasts and professionals. This quiz covers various topics related to airworthiness requirements, stress analysis, structural identification, and more.
- 100 questions to challenge your understanding
- Multiple choice and checkbox formats
- Perfect for students and industry professionals
Under what airworthiness requirement the Structure of structural strenght should be met?
A. Part 25 Section 1 Subpart C
B. Part 25 Section 1 Subpart D.
C. Part 25 Section 1.
D. Part 25.
The aircraft zonal identification system divided into:
Major zones, and Major sub zones.
Major zones, and Major sub zones, and Unit zones
Chapter, Sub chapter, and Unit.
Major sub zones, and Unit zones.
What are the most important factors in aircraft construction?
Lightness and strength.
Strength, light in weight, and reliability
Maneuverability and speed.
Strength, light in weight, and maneuverability.
What the purpose of structural identification system ?
Used to determine a particular structure location in an aircraft.
Used to show structure component in a repair manual.
Used to control flight envelope
All mention above.
When the water drain valves on the lowest points of the fuselage closed?
Aircraft on ground.
Flight.
Aircraft on ground or during flight.
Cabin pressurized.
The basis of the fail safe design is
The basis of the fail safe design is
Stress analysis.
Load analysis
All mention above.
A fire zone in which a crew member could enter to fight a fire is
Class B.
Class C.
Class D.
Class A.
The airframe of a fixed-wing aircraft is generally divided into principal units, such as:
A. Fuselage, engine, landing gear, stabilizer, and flight control.
B. Fuselage, nacelle, landing gear, flight control, and wing.
C. Landing gear, fuselage, stabilizer, flight control, and wing.
D. Landing gear, fuselage, engine, stabilizer, flight control, and wing
What is the main structure of an aircraft?
A. Engine.
B. Wings.
C. Fuselage.
D. Landing gears.
What aircraft stress results from a twisting force?
A. Compression.
B. Bending.
C. Torsional.
D. Shear.
Zone 100 is
A. Left-hand wing.
B. Right-hand wing.
C. Upper fuselage.
D. Lower fuselage.
The various parts of the aircraft airframe are maintained at the same potential by
A. Bonding.
B. Static wicks.
C. Grounding.
D. Earthing.
Where on an aircraft is fuselage station 0 (zero) usually located?
A. Below the pilot seat.
B. At the nose radome.
C. At or close to the nose of the aircraft depend on the aircraft design.
D. At the forward pressure bulkhead.
What aircraft stress result from squeezing of a material ?
A. Compression
B. Tension
C. Torsion
D. Bending.
What the basis “ Safe Life” design?
A. Stress Analysis.
b. Load Analysis.
C. Fatique Analysis
D. Damage Analysis.
What type of stress in an aircraft fuselage creates by single engine propeller?
A. Bending.
b. Tension.
c. Torsion.
d. Compression.
If the resulting component operates at stresses above the fatique strength it is said to be
A. Condition monitord.
B. On condition.
c. Life limited.
D. Design safe.
What are the three groups of aircraft structures?
A. Main, Auxilliary, and Optional.
B. Primary, Secondary, and Tertiary.
c. Primary, Secondary, and Optional.
d. Primary, Secondary, and Auxilliary.
If a colour is used to identify primary structure, it will be
A. Green or stippled.
B. Yellow or Hatched.
C. Red or White.
D. Blue or shadow.
If a colour is used to identify secondary structure, it will be
A. Red or White.
B. Green or Stippled.
C. Blue or Shadow.
d. Yellow or Hatched.
If a colour is used to identify tertiary structure, it will be
A. Green or Stippled.
b. Red or White.
c. Yellow or Hatched..
d. Blue or Shadow
. Measurement of height perpendicular from horizontal plane below the bottom fuselage is:
A. Fuselage station.
b. Buttock line.
c. Water line.
D. Wing station.
In a monocoque structure, which component carries the major loads?
a. Longerons.
b. Stringers.
c. Skin.
d. Frame.
Which part of an aircraft structure that keep pressurize of the aircraft ?
A. Frames and formers.
b. Frames, formers and stringers.
C. Aft and forward pressure bulkhead.
d. Frames, and bulkhead.
What the definition of “STRESS“ ?
A. Is an internal force which opposes or resist deformation.
B. Is the deformation of material.
C. Is the strength of material.
d. Is an external force which cause material deformation.
What aircraft stress results from two fastened materials that tend to separate?
A. Tension.
b. Bending.
c. Shear.
D. Compression.
What type of strees in an aircraft fuselage creates by single engine propeller?
A. Bending.
B. Tension.
C. Torsion.
D. Compression.
What is the result of the action of lift forces against the wings of an aircraft In flight?
A. Tension on the bottom and compression on the top.
B. Compression on both the bottom and top.
C. Tension on both the bottom and top.
d. Tension on the top and compression on the bottom.
When in flight, the wing spars of an aircraft-undergo bending stresses. These stresses are actually a combination of what stresses?
A. Shear and tension.
B. Shear and torsion.
c. Compression and tension.
D. Torsion and tension.
The spars are designed with extra strength which of the following forces?
A. Torsion.
B. Bending.
c. Tension.
D. Compression.
The purpose of fairings in the aircraft structure is :
A. To transfer bending load from the skin to the stringers.
B. To smooth out the airflow over the angles formed by the wings and other structural unit to the fuselage.
C. To give a shape of the fuselage to take the stress during flight.
d. All mention above.
Non structural member where the radar antenna is installed called:
A. Fairing.
B. Radome.
C. Tail cone.
D. Secondary structure.
Stringers are used in which of the following types of aircraft fuselage construction?
A. Truss type.
b. Monocoque type.
c. Semi monocoque type.
D. Multi spar type.
Vertical members on truss type contruction called
A. Longerons.
B. Bulkheads.
c. Struts.
d. Stringers.
What is the main purpose of stringers in the semi-monocoque design?
A. To add length to the frame.
B. To carry concentrated loads.
c. For attachment of the wings.
D. For shape and attachment of the skin.
What is the purpose of the passenger doors
A. Permit normal entrance to the aircraft during on the ground.
B. Permit normal or emergency entrance into or exit from the aircraft.
c. Permit access for maintenance and passenger.
d. Permit access for catering service.
Which stress that develop at the lap joint of the aircraft skin ?
A. Shear stress.
b. Torsion stress.
C. Tension stress.
D. Compression stress.
The general types of fuselage construction are:
A. Semi monocoque type and Truss type.
b. Monocoque type and Truss type.
c. Semi monocoque type and Monocoque type.
d. Monocoque type, Semi monocoque type, and Truss type.
The aircraft windows consist of :
A. Windshield windows, sliding windows, fix side windows.
B. Windshield windows, sliding windows, fix side windows, eyebrow windows
C. Cockpit windows, cabin windows, door windows.
D. Cockpit windows, sliding windows, eyebrow windows.
The passenger doors that closed from the outside called:
A. Non-plug type.
b. Plug type.
C. Plug or non plug types are depend on the type of the aircraft.
D. All mention above.
The flight control surfaces on a simple wing are :
A. Leading edge flaps and ailerons.
B. Slats, trailing edge and leading edge flaps.
C. Ailerons, and trailing edge flaps.
d. Slats, spoilers, speed brakes, and flaps
What part of the wing structure carries more stress?
A. Skin.
C. Spars.
B. Ribs.
D. Stringers.
The fundamental wing construction base on:
A. Rib, spar and beam.
b. Mono spar, multi-spars, and box beam. .
C. Split, fowler and plain.
d. Spars, ribs, and stringers
The full cantilever wing is uses:
A. Used external struts or wire bracing.
B. Ribs as the principal structural members.
C. Not used external bracing.
d. Used external bracing and multi spars.
The material of wing tip assembly construction is :
A. Magnesium.
B. Titanium.
C. Aluminum alloy.
D. Stainless steel.
The chord of wing is measured from :
A. Wing tip to wing tip.
b. Wing root to wing tip.
c. Leading edge to trailing edge of the wing.
D. Front spar to rear spar of the wing.
Which members of the structure that supply the necessary shape of the wings ?
A. Spars and stringers.
b. Skin and stiffeners.
C. Ribs or bulkheads.
d. Frames or bulkheads.
Box beam construction wing is:
A. Wing construction use single spar.
B. Wing construction with multi spar.
c. Wing construction uses two main longitudinal members.
D. As mention answers A or B.
The wings structure that used external bracing called?
A. Semi cantilever.
B. Cantilever.
C. Upper wing.
D. Lower wing.
Wings on an aircraft are designed for which of the following purposes?
A. To create lift.
B. To create drag.
c. To create drag and lift.
D. To reduce drag.
What is attached to the rear of the vertical stabilizer?
A. Elevator.
b. Ailerons.
C. Flaps.
D. Rudder.
What the airfoil use to maintains longitudinal stability in an aircraft ?
A. Horizontal stabilizer.
b. Rudder.
c. Vertical stabilizer.
d. Rudder and dorsal fin.
Stabilzer attached to the center tail of fuselage by mean
A. Bulkheads.
B. Longerons.
C. Spars. .
D. Frames.
Where are the elevators control surface located?
A. Trailing edge of the wings.
B. Lower surface of the fuselage.
C. Horizontal stabilizer. .
D. Vertical stabilizer.
The term 'empennage' incorporates
A. Rudder, ailerons, spoilers.
b. Eelevators, stabilizer, ailerons.
C. Rudder, flaps, stabilizer.
d. Elevators, stabilizer, rudder.
What are buttock lines?
A. Measurements from the center lines
b. Vertical measurement lines.
c. Horizontal measurement lines.
D. Measurement from lower..
The four main structural items making up a horizontal stabilizer are
A. Spar, rib, stringers, skin panels. .
b. Spar, rib, bulkheads, skin panels.
C. Spar, rib, longerons, skin panels.
D. Spar, rib, frames, skin panels.
An elevator provides control about the
A. Lateral axis.
b. Horizontal stabilizer.
C. Longitudinal axis.
D. Vertical axis.
Elevators are used to control what aspects of flight?
A. Motion about the vertical axis.
b. Motion about the lateral axis. .
C. Forward flight.
D. Landing or takeoff
The empennage of the aircraft consists of which of the following sections?
A. Wings and tail.
b. Speed brakes, spoilers, and flaps.
C. Vertical and horizontal stabilizers. .
D. Ribs, spars, and skin.
The trim horizontal stabilizer actuator attached to what structure of the stabilizer?
A. Front spar. .
B. Rear spar.
c. Center section.
d. Leading edge.
What is the primary function of the stabilizers?
A. To keep the aircraft flying straight and level. .
b. To provide drag for the aircraft.
c. To control the direction of flight.
d. To balance the weight of the wings.
Aerodynamic surface that control moveable of stability control surfaces are
A. Rudder.
B. Stabilizer. .
C. Elevator.
d. Flaps.
What is the primary function of the stabilizers?
A. To keep the aircraft flying straight and level. .
B. To provide drag for the aircraft.
C. To control the direction of flight.
D. To balance the weight of the wings.
The trim horizontal stabilizer actuator attached to what structure of the stabilizer?
A. Front spar.
b. Rear spar. .
C. Center section.
d. Leading edge
The purpose of the vertical fin is to provide
A. Directional stability. .
B. Lateral stability.
C. Vertical stability.
D. Longitudinal stability.
The fin helps to give
A. Directional stability about the normal axis. .
b. Longitudinal stability about the normal axis.
c. Lateral stability about the longitudinal axis.
d. Directional stability about the longitudinal axis.
Which of the following auxiliary flight control surfaces are used for the purpose of shortening the landing and takeoff runs?
A. Slats.
b. Spoilers.
C. Speed brakes.
D. Wing flaps.
What airfoil maintains directional stability in an aircraft?
A. The elevators.
b. The vertical stabilizer.
C. Horstab and elevators
d. The horizontal stabilizer.
The pilot has under estimated his altitude and must climb to get over a mountain. Which of the following actions should he take?
A. Pull back on the trim.
B. Pull back the coloumb.
C. Push the trim forward.
d. Push the coloumb forward.
Longitudinal control systems control movement of the aircraft about which of the following axes?
A. Lateral only.
B. Vertical only.
c. Longitudinal only.
d. Lateral, vertical, and longitudinal.
Which of the following types of flaps operates on tracks and rollers?
A. Plain.
B. Fowler.
C. Split.
D. Leading edge.
A speed brake is used for which of the following purposes?
A. To increase lateral control.
B. To decrease thrust.
c. To decrease landing speed.
d. To increase lift.
Elevons combine the functions of both
A. Rudder and aileron.
b. Elevator and aileron.
C. Rudder and elevator.
D. Elevator and stabilizer.
The aileron control what motion of the aircraft
A. Roll.
B. Pitch.
C. Yaw.
d. Skid.
A control surface is provided with aerodynamic balancing to
A. Assist the pilot in moving the control.
B. Increase stability.
C. Decrease the drag when the control is deflected.
D. Increase the drag when the control is deflected.
Aerodynamic balancing of flight controls is achieved by
A. Providing a portion of the control surface ahead of the hinge point.
B. Placing a weight ahead of the hinge point.
C. Placing a weight in the leading edge of the control surface.
D. Allow the leading edge of the surface to project into the airflow.
Pylon structural member supports the
A. Engine.
B. Center section.
C. Empennage.
D. Spars.
What is purpose of cowling and nacelle installed on Power-plant?
A. To provide Power sources and streamline the flow of air.
B. To cooling purpose of the Power-plant and Power sources.
c. To streamline the flow of air and cooling purpose of the Power-plant.
D. Reduce profile drag of the airflow.
Which of the following surfaces is not protected by the anti-icing system
A. Engine nacelle.
B. Leading edge surface.
C. Pitot static tube.
D. Vertical stabilizer leading edge.
Engine loads, stresses, and vibrations are transmitted to an aircraft structure by what parts?
A. Bulkheads.
B. Engine mounts and nacelles.
C. Mount beams.
d. Stringers, formers, and frames.
The structure of engine nacelle or pods consist of
A. Skin, cowling, ribs, fire-wall, engine mounts.
B. Skin, cowling, fire-wall, engine mounts.
C. Skin, cowling, structural member, fire-wall, engine mounts.
D. Skin, fire-wall, cowling, and ribs.
Jet engines are usually mounted by
A. Aluminium castings.
B. Welded steel tubing.
C. Beam structure.
D. Forged mounts and bolted to aircraft forged structure.
The airframe of a fixed-wing aircraft is generally divided into principal units, such as:
A. Fuselage, engine, landing gear, stabilizer, and flight control.
B. Fuselage, nacelle, landing gear, flight control, and wing.
C. Landing gear, fuselage, stabilizer, flight control, and wing.
D. Landing gear, fuselage, engine, stabilizer, flight control, and wing
In a semi-monocoque fuselage , primary bending loads are absorbed by :
A. Bulkheads.
B. Longerons.
C. Station webs.
d. Skin.
The load imposed on the wings during flight acts primarily on what structural member ?
A. Beams.
b. Spars.
c. Skin.
D. Ribs.
Where on an aircraft is wing station O (zero) located?
A. At the wings tip.
B. At the wings butt.
C. At the centerline of the fuselage.
d. At the wing root.
What parts of an aircraft wing transmit the load from the skin covering to the spars?
A. Frames.
B. Stringers.
C. Ribs.
D. Longerons.
What the purpose of the differential ailerons ?
A. To prevent adverse roll.
b. To prevent adverse jaw.
C. To prevent adverse roll and adverse jaw.
D. To prevent different angle ailerons deflection.
What the landing gear indication during normal straight and level flight.
A. . All lights are illuminated.
b.. All lights are extinguished.
C.. Three green lights are illuminated.
D. Up-locked lights are extinguished.
What is the purpose of the torque link?
A.. To hold the strut in place.
B. To absorb the sock and reduce bounce on landing.
C. To limit compression stroke.
D. To maintain the correct wheels alignment.
The type of flap which extends rearwards when lowered is called a
A. Split flap.
B. Plain flap.
C. Fowler flap.
D. Krugrer flap.
Where is the rudder control surfaces located?
A. Trailing edge of the wing.
B. Horizontal stabilizer.
c. Lower surfaces of the fuselage.
D. Vertical stabilizer.
What is the purpose of trim tabs?
A. To maneuver the aircraft.
B. To reduce landing speed.
C. To move the primary control surfaces.
D. To maintain aircraft balance.
The yawing motion of an aircraft is controlled by what flight control (s)?
A. Ailerons.
B. Elevators.
C. Trim tabs.
D. Rudder.
Trim tabs are secondary flight control surfaces that are recessed into the trailing edges of which of the following components?
A. Wings.
B. Vertical stabilizers.
C. Ailerons, elevators and rudder.
D. Horizontal stabilizers.
Pitch, yaw and roll control of an aircraft are provided by what flight controls ?
A. Primary.
B. Backup.
c. Secondary.
D. Auxiliary.
The flight control surface on a simple wing include what controls.
A. . Edge flaps and ailerons.
B.. Trailling and leading adge flaps.
c.. Aileron and leading edge flaps.
d. Aileron and trailling edge flaps.
The balance tab is an auxiliary surface fitted to a main control surface
A. Operating automatically to assist the pilot in moving the controls.
B. Operating automatically to provide feel to the controls.
C. Operating independently to assist aircraft stabilizer
D.. Operating independently at which point in length of cable the tensionmeter is applied.
Elevators are used to control what aspects of flight
A. Motion about the vertical axis.
B. Forward flight.
c. Motion about the lateral axis.
D. Landing or take off.
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