![]() ![]() Elastomeric dampers attenuate dynamic motions, most often in the rotor, and can be used with or without special fluids. They are limited to oscillatory motions from 10 to 90 degrees or up to within 1 inch. Elastomeric bearings are composed of natural or synthetic rubber bonded to metal devices that accommodate dynamic motions. ![]() The elastomeric parts found on a helicopter include bearings, isolators and dampers. All of these parts must be periodically inspected and maintained to guarantee a safe, vibration-free ride. A typical helicopter will have several elastomeric components including a pitch-restraint spring, main rotor lead lag damper, main rotor spindle bearing, main rotor CF bearing, tail rotor bearing, corner Pylon isolator, instrument panel isolator, main rotor hub Frahm damper, rotor head assembly, and tail-light isolator. ![]() These components are generally maintained through visual inspection, and it is essential for the mechanic to understand how these parts operate, the causes and effects of degradation, and the best maintenance practices. The service life of some isolators can be from 5,000 to 10,000 flight hours. They also offer the advantage of an extremely long operating life. Elastomeric parts are multi-directional, simple, lightweight, reliable, and can be designed into a system at a moderate cost compared to more complex methods. Compared to coiled metal springs, elastomeric elements allow components to be easily configured in different sizes and shapes, and can be readily integrated into various helicopter designs. On April 2019, LORD Corporation was acquired by Parker Hannifin for $3.675 billion and rebranded Parker LORD.Įlastomeric components are comprised of bonded-rubber elastomeric elements that are specially designed to eliminate certain types of vibration. Is a diversified technology and manufacturing company developing adhesives, coatings, motion management devices, and sensing technologies. ![]() Established 1924, LORD Corporation designs, manufactures and markets mechanical devices and electromechanical systems to control vibration, motion and noise. ![]()
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