What is used to secure the mobile aircraft arresting system on a concrete runway for unidirectional arrestment capability?

The mobile aircraft arresting system is designed to safely stop aircraft during emergencies, and its secure placement on a concrete runway is crucial for effective operation. Anchor plates are specifically used for this purpose as they are heavy-duty and provide a strong foundation that can withstand the dynamic loads imposed during an aircraft's arrestment.

These anchor plates are typically embedded into or placed on the surface of the concrete runway to ensure stability and prevent movement of the arresting system. They distribute the forces exerted on the system over a larger area of the runway, which helps to manage stress and prevent damage to the surface. This is particularly important in unidirectional arrestment, where consistent directional forces are expected.

While securing bolts, concrete slabs, and reinforcement bars may play roles in construction or structural support, they do not provide the specific function required for the mobile aircraft arresting system's secure attachment and stability in the context of arrestment capability. Anchor plates are explicitly designed for this operational need, making them the correct choice in this scenario.