What is the purpose of the initial tautening process in fabric covering?

The purpose of the initial tautening process in fabric covering is primarily to remove wrinkles and ensure a tight fit of the fabric over the aircraft structure. This step is crucial because any wrinkles or loose areas in the fabric can lead to aerodynamic issues, reduce the overall integrity of the covering, and may later cause complications during the finishing processes, such as painting.

By tightening the fabric, it conforms correctly to the underlying structure, which contributes to a smooth surface necessary for optimal performance and aesthetics. A properly taut fabric also helps in distributing loads evenly and maintaining the structural integrity of the aircraft covering materials. When done correctly, this initial tautening ensures that the fabric adheres well during the subsequent steps in the covering process, leading to a well-finished and durable covering.