A helicopter main rotor is capable of producing vibrations in both the vertical and lateral planes.Ī vertical vibration is a result of unequal lift produced by the main rotor blades. However, this article will address only the main rotor.įirst, it is important to realize exactly what type of vibrations you are trying to reduce or eliminate. The main rotor is not the only rotating assembly of concern in a helicopter there are others such as the tail rotor assembly, drive shaft assemblies, and oil cooler fans. Rotor track and balance is the process of smoothing vibrations in the airframe, which are caused by the main rotor. Reducing these vibration levels in the airframe to a minimum is absolutely essential in order to ensure the safety and longevity of the helicopter. ![]() ![]() Premature wear and failures in rotating helicopter components can be attributed to excess vibration levels. A helicopter is a complex collection of rotating assemblies that allow flight characteristics unavailable to fixed wing aircraft. In my experience, this is often a true statement, but a correctable one. ![]() 've heard it said on many occasions that a helicopter is several thousand rotating components trying desperately to shake themselves free of one another.
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