What is one reason why nylon or Dacron is preferred in aviation fabric covering?

Nylon and Dacron are preferred materials for aviation fabric covering primarily because they are lightweight and strong, which are essential characteristics in aircraft performance. The strength of these synthetic fibers allows for durability under the various stresses encountered during flight, such as turbulence and changes in atmospheric pressure. Additionally, their lightweight nature contributes to overall weight reduction of the aircraft, enhancing fuel efficiency and improving flight characteristics. The combination of these properties makes nylon and Dacron highly suitable for use in fabric covering applications in aviation.