Which of the following describes an effect of torsion and tension during flight on fasteners?

The effect of torsion and tension during flight on fasteners is primarily that it may cause loosening. This phenomenon occurs due to the cyclical and dynamic loads experienced by aircraft components in flight. When an aircraft is in operation, it experiences a range of forces, including torsional stresses from engine vibrations and aerodynamic load variations, as well as tensile stresses from the structural components of the aircraft.

These forces can lead to a combination of twisting (torsion) and pulling (tension) on the fasteners securing various parts of the aircraft. Over time, especially during repeated takeoffs and landings, this stress can result in the fasteners gradually becoming loose. This loosening can compromise the integrity of joints and assemblies, leading to potential safety hazards.

While friction can be temporarily increased due to these stressors, it does not inherently result in a permanent effect like loosening. Additionally, the creation of a static charge is not a direct consequence of torsion and tension on fasteners, nor does it pertain to their primary functionality. Similarly, while proper tension in fasteners does help improve grip during initial assembly, the stresses of flight can lead to the exact opposite effect when considering ongoing operation. Thus, the primary effect to note is the potential for