What is "shrinkage" in aircraft fabric covering?

"Shrinkage" in aircraft fabric covering refers to the process of tightening and smoothing the fabric after installation through the application of heat. This step is crucial in ensuring that the fabric adheres tightly to the airframe, which helps eliminate wrinkles and reduces the likelihood of fabric sagging over time.

When heat is applied, the fibers of the fabric contract, creating a taut and smooth surface. This not only enhances the aerodynamic properties of the aircraft but also contributes to the overall structural integrity of the fabric covering. A properly shrunk fabric is less prone to damage from environmental factors and ensures better performance during flight.

While other options may address different aspects of fabric covering, they do not accurately describe the concept of shrinkage in the context of aircraft fabric application. Shrinkage specifically focuses on achieving the best fit and finish for the fabric using heat, making this concept fundamental in the process of fabric covering in aviation.