Aircraft Structures & Materials Flashcards
7 cards from real Airframe Mechanic Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Aircraft Structures & Materials flashcards as text
Which type of aluminum alloy is most commonly used in aircraft skin due to its high strength-to-weight ratio?
Answer: 2024-T3
2024-T3 aluminum alloy is the most widely used aircraft skin material because of its excellent strength-to-weight ratio and fatigue resistance.
What is the primary purpose of a wing spar in an aircraft structure?
Answer: To carry the bending loads along the wing span
Wing spars are the primary structural members that carry bending and shear loads along the span of the wing.
What does the term 'monocoque' mean in aircraft structural design?
Answer: A structure with no internal framework where the skin carries all loads
Monocoque construction relies entirely on the external skin to carry structural loads, with no internal framework.
Which non-destructive testing method uses high-frequency sound waves to detect internal defects in metal?
Answer: Ultrasonic inspection
Ultrasonic inspection uses high-frequency sound waves that reflect off internal discontinuities to detect flaws within materials.
What is the function of a stringer in fuselage construction?
Answer: To carry longitudinal tension and compression loads
Stringers run longitudinally along the fuselage and carry axial (tension and compression) loads while stabilizing the skin against buckling.
What type of stress is experienced by a rivet when it holds two overlapping sheets being pulled apart?
Answer: Shear stress
When two overlapping sheets are pulled apart, the rivet experiences shear stress because the force acts across (perpendicular to) its cross-section.
Which material property describes a metal's ability to be drawn into wire without breaking?
Answer: Ductility
Ductility is the ability of a material to deform plastically under tensile stress, allowing it to be drawn into wire.