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
What is the primary advantage of using titanium alloys in aircraft construction?
Answer: High strength retention at elevated temperatures
Titanium alloys maintain their strength at elevated temperatures, making them ideal for engine nacelles, firewalls, and high-heat areas.
In a semi-monocoque structure, which components share the load with the skin?
Answer: Frames, bulkheads, stringers, and longerons
Semi-monocoque structures use internal framework consisting of frames, bulkheads, stringers, and longerons working together with the skin to carry loads.
What is 'corrosion' in the context of aircraft metals?
Answer: Electrochemical deterioration of metal by reaction with the environment
Corrosion is the electrochemical deterioration of metal through chemical reaction with moisture, oxygen, or other environmental agents.
Which type of corrosion occurs at the junction of two dissimilar metals in the presence of an electrolyte?
Answer: Galvanic corrosion
Galvanic corrosion occurs when two dissimilar metals are in electrical contact in the presence of an electrolyte, causing the more anodic metal to corrode.
What does 'anodizing' do to an aluminum surface?
Answer: Increases the thickness of the natural oxide layer for corrosion protection
Anodizing uses an electrochemical process to thicken the natural aluminum oxide layer, significantly improving corrosion and wear resistance.
What is the primary structural function of wing ribs?
Answer: To maintain the airfoil shape and transfer loads to the spars
Wing ribs maintain the airfoil cross-sectional shape and transfer aerodynamic loads from the skin to the spars.
What is the recommended action when a mechanic discovers a crack in an aircraft structural component?
Answer: Ground the aircraft and consult the manufacturer's structural repair manual
Structural cracks require the aircraft to be grounded and repairs must follow the manufacturer's structural repair manual or an FAA-approved repair scheme.