What type of assemblies are designed to reduce rotor induced vibrations?

Pendulum damper assemblies are specifically engineered to reduce rotor-induced vibrations in rotorcraft. These assemblies work by utilizing the principles of pendulum motion to counteract the oscillations created by the rotor blades during flight. The damping effect occurs as the pendulum moves in opposition to the vibration, effectively stabilizing the aircraft and providing a smoother ride.

In rotorcraft, vibrations can lead to discomfort for the crew and passengers, as well as contributing to wear and tear on the mechanical components. By employing pendulum damper assemblies, the aircraft's design can mitigate these vibrations, enhancing both performance and longevity.

Other types of assemblies mentioned, such as vibration dampening, rotor stabilizer, and shock absorber assemblies, may also contribute in some way to minimizing vibrations or providing support for dynamic loads; however, the primary mechanism and intent behind pendulum dampers is specifically aimed at addressing rotor-induced vibrations directly. This makes them the most suitable choice for this question.