Development of a Rotor-Body Coupled Analysis for an Active Mount Aeroelastic Rotor Testbed

<p>At the Langley Research Center an active mount rotorcraft testbed is being developed for use in the Langley Transonic Dynamics Tunnel. This testbed the second generation version of the Aeroelastic Rotor Experimental System (ARES-II) can impose rotor hub motions and measure the response so that rotor-body coupling phenomena may be investigated. An analytical method for coupling an aeroelastically scaled model rotor system to the ARES-II is developed in the current study. Models of the testbed and the rotor system are developed in independent analyses and an impedance-matching approach is used to couple the rotor system to the testbed. The development of the analytical models and the coupling method is examined and individual and coupled results are presented for the testbed and rotor system. Coupled results are presented with and without applied hub motion and system loads and displacements are examined. The results show that a closed-loop control system is necessary to achieve desired hub motions that proper modeling requires including the loads at the rotor hub and rotor control system and that the strain-gauge balance placed in the rotating system of the ARES-II provided the best loads results.</p><p>This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact and remains as true to the original work as possible. Therefore you will see the original copyright references library stamps (as most of these works have been housed in our most important libraries around the world) and other notations in the work.</p><p>This work is in the public domain in the United States of America and possibly other nations. Within the United States you may freely copy and distribute this work as no entity (individual or corporate) has a copyright on the body of the work.</p><p>As a reproduction of a historical artifact this work may contain missing or blurred pages poor pictures errant marks etc. Scholars believe and we concur that this work is important enough to be preserved reproduced and made generally available to the public. We appreciate your support of the preservation process and thank you for being an important part of keeping this knowledge alive and relevant.</p>