What is the purpose of radar-absorbing materials (RAM) in LO aircraft?

The primary purpose of radar-absorbing materials (RAM) in low observable (LO) aircraft is to reduce the radar cross-section. By incorporating materials that absorb or scatter radar waves, LO aircraft can significantly diminish their visibility to radar systems, making them less detectable to enemy radar. This reduction in radar cross-section is vital for maintaining stealth, allowing these aircraft to operate with a lower probability of interception and contributing to their effectiveness during missions.

While aspects such as aerodynamics, fuel efficiency, and structural support are important considerations in aircraft design, they do not pertain to the specific function of RAM. RAM is specifically engineered to interrupt the radar signal, thus enhancing the stealth capabilities of the aircraft. This quality is crucial in modern warfare and for achieving tactical advantages in various operational scenarios.