A viscoelastic damper on a helicopter rotor is a device used to control rotor vibration. In aviation, dampers are used to reduce vibrations generated by mechanical components during operation, increase the durability of aircraft components, reduce maintenance costs, and improve flight comfort.

A viscoelastic damper is a common type of damper that combines viscous and elastic properties. Viscosity provides resistance to motion and helps dissipate vibration energy, while elasticity allows components to return to their original shape after being stressed. When a helicopter rotor rotates, the components have a complex dynamic response due to centrifugal force, airflow effects, and gravity. To ensure rotor stability and minimize fatigue damage, it is often necessary to control rotor blade vibration by installing dampers.

The main rotor system of a helicopter is very complex, and the rotor blades are not only subjected to dynamic stresses of bending and torsion, but also have to cope with variable airflow in flight. Therefore, the use of viscoelastic dampers can effectively control the vibration problems of the blades under various flight conditions, thus improving the performance and reliability of the helicopter.

The design of viscoelastic dampers is tailored to the specific model of helicopter and the characteristics of the rotor blades. Engineers need to accurately calculate the required damping characteristics so that energy can be absorbed efficiently without interfering with the normal motion of the rotor blades. The selection of viscoelastic materials is also a major focus in the design process, as these materials need to maintain stable performance over a wide range of temperatures and load conditions.

The viscoelastic dampers produced by the company are characterized by high damping coefficient and long service life, with MTBF (Mean Time Between Failure) of more than 2,500 flight hours. They excel in vibration damping and anti-impact effects, effectively reducing mechanical vibrations and lowering the impact force on structures and equipment under severe working conditions. This provides customers with more stable and reliable equipment and structures, reduces fatigue damage caused by vibration, extends service life and reduces maintenance costs.