What is the primary material used in the construction of aircraft control cables?

The primary material used in the construction of aircraft control cables is steel. Steel is chosen for aircraft control cables because of its high tensile strength, durability, and resistance to stretch, which ensures that control inputs are transmitted accurately and reliably without significant deformation over time. Additionally, steel cables can withstand the harsh environmental conditions often encountered in aviation, such as temperature fluctuations and exposure to various atmospheric elements, making them a robust choice for critical control functions in an aircraft. This reliability is crucial for maintaining the safety and performance of the aircraft, as control cables are integral to surfaces like ailerons, elevators, and rudders.

Other materials, such as plastic or cotton, do not provide the necessary strength and reliability required for such a critical application. Aluminum, while lightweight and resistant to corrosion, does not offer the same level of tensile strength as steel, making it unsuitable for control cable construction. Hence, steel remains the preferred choice in aviation for ensuring effectiveness and safety in aircraft operation.