What is a potential effect of delamination in the composite structure of LO aircraft?

Delamination in composite structures, particularly in low observable (LO) aircraft, refers to the separation of layers within the composite material. This phenomenon can have significant implications for the integrity and performance of the aircraft. When delamination occurs, the strength and stiffness of the composite are compromised, leading to structural weakness. This reduction in structural integrity can make the aircraft more susceptible to failure under stress or impact, which is particularly critical given the operational demands placed on military aircraft. Moreover, structural weakness can adversely affect the aircraft's overall performance characteristics, including its ability to withstand the rigors of flight.

The other options do not accurately reflect the consequences of delamination. Improved aerodynamic properties and enhanced insulation would not typically result from delamination; conversely, increased radar visibility is a concern associated with different degradation mechanisms or design flaws, rather than a direct effect of delamination itself. This reinforces the understanding that delamination primarily jeopardizes the structural integrity of composite materials in low observable aircraft.