2016-17

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Design and Development of Test Equipment for Elastomeric Bearing used In Helicopter Tail Rotor Blade
(2017-08-23T09:18:42Z) APARNA J, J; CHANDANA, C S; GAUTAM, S; RUPAK, KUMAR SHARMA
Elastomeric bearings are used in helicopter tail rotor for transfer of control to the blade via pitch control. These bearings are subjected to complex dynamic load during operation. In order to check the functionality of these bearings, a specially designed test facility is necessary. Complex dynamic load should be simulated on this test rig to study the performance. The existing system is a mechanical closed loop test system consisting of power pack, manifolds, actuator, controller and data recording system. This project deals with design and development of suitable closed loop electrical system for simulation of loads experienced by the bearing. The electrical system consists of motor with drive controls, sensors and equipments for data recording. This electric motor provides an oscillatory motion of about ±25˚ at the rate of 50˚ per minute. The present concept eliminates the extensive maintenance required for the mechanical system. The prototype model is done by using a stepper motor and an appropriate closed loop computer controlled system.