Airframe Mechanic Certification Aircraft Structures & Materials 3

Question 1

What is the primary advantage of using titanium alloys in aircraft construction?

Accepted Answer

High strength retention at elevated temperatures

Answer

Titanium alloys maintain their strength at elevated temperatures, making them ideal for engine nacelles, firewalls, and high-heat areas.

Question 2

In a semi-monocoque structure, which components share the load with the skin?

Accepted Answer

Frames, bulkheads, stringers, and longerons

Answer

Semi-monocoque structures use internal framework consisting of frames, bulkheads, stringers, and longerons working together with the skin to carry loads.

Question 3

What is 'corrosion' in the context of aircraft metals?

Accepted Answer

Electrochemical deterioration of metal by reaction with the environment

Answer

Corrosion is the electrochemical deterioration of metal through chemical reaction with moisture, oxygen, or other environmental agents.

Question 4

Which type of corrosion occurs at the junction of two dissimilar metals in the presence of an electrolyte?

Accepted Answer

Galvanic corrosion

Answer

Galvanic corrosion occurs when two dissimilar metals are in electrical contact in the presence of an electrolyte, causing the more anodic metal to corrode.

Question 5

What does 'anodizing' do to an aluminum surface?

Accepted Answer

Increases the thickness of the natural oxide layer for corrosion protection

Answer

Anodizing uses an electrochemical process to thicken the natural aluminum oxide layer, significantly improving corrosion and wear resistance.

Airframe Mechanic Certification Practice Test

Airframe Mechanic Certification Practice Test

Airframe Mechanic Certification Aircraft Structures & Materials 3