What is the typical moisture content range for wood used in aircraft construction?

The typical moisture content range for wood used in aircraft construction is indeed 8% to 12%. This range is ideal because it balances the structural integrity and weight of the wood. When wood is too dry (below 8%), it can become brittle, leading to potential structural failures under stress. Conversely, if the moisture content exceeds 12%, the wood may swell and become more prone to warping or decay, compromising the performance and safety of the aircraft.

Ensuring that the moisture content is within this optimal range is crucial for maintaining the physical properties of the wood, such as strength and rigidity, which are vital for the demanding conditions experienced in aviation. Proper drying and conditioning processes are essential in achieving this desired moisture content, thereby enhancing the durability and reliability of wooden components in aircraft.