What is the purpose of the Engineered Material Arresting System (EMAS)?

The Engineered Material Arresting System (EMAS) serves a critical safety function in aviation by providing a means to stop an aircraft that has overrun the runway. This system is specifically designed using crushable cellular cement, which enables the material to deform upon impact. When an aircraft rolls into the EMAS, the soft, crushable material absorbs energy effectively, slowing the aircraft gradually and bringing it to a stop.

This construction method is crucial because it helps to minimize the risk of damage to both the aircraft and the runway environment. Unlike rigid barriers, which could cause catastrophic damage to an aircraft upon impact, the EMAS is engineered to minimize injury and also to protect surrounding infrastructure. Additionally, the use of cellular cement makes installation feasible in areas where traditional arresting systems may not be possible due to space or structural constraints.

The other options suggest either a rigid system or alternatives that would not effectively meet the same needs. Hence, understanding the purpose of EMAS is essential for airport safety management and effective runway operation.