Kang, B.-H.; Jo, B.-H.; Kim, B.-G.; Hwang, J.-H.; Choi, S.-B. Linear and Nonlinear Models for Drop Simulation of an Aircraft Landing Gear System with MR Dampers. Actuators2023, 12, 287.
Kang, B.-H.; Jo, B.-H.; Kim, B.-G.; Hwang, J.-H.; Choi, S.-B. Linear and Nonlinear Models for Drop Simulation of an Aircraft Landing Gear System with MR Dampers. Actuators 2023, 12, 287.
Kang, B.-H.; Jo, B.-H.; Kim, B.-G.; Hwang, J.-H.; Choi, S.-B. Linear and Nonlinear Models for Drop Simulation of an Aircraft Landing Gear System with MR Dampers. Actuators2023, 12, 287.
Kang, B.-H.; Jo, B.-H.; Kim, B.-G.; Hwang, J.-H.; Choi, S.-B. Linear and Nonlinear Models for Drop Simulation of an Aircraft Landing Gear System with MR Dampers. Actuators 2023, 12, 287.
Abstract
In this study, the focus is on the drop test simulation of an MR (Magnetorheological) damper-based main landing gear (MRMLG), aiming to explore multi-degree-of-freedom (DOF) dynamic models during aircraft landing. Three different 6-DOF dynamic models are proposed in this work and their drop performances are compared with results achieved one of commercial softwares. The proposed models include a nonlinear aircraft model (NLAM), a linearized approximated aircraft model (LAAM) linearizing from the nonlinear equations of motion in NLAM, and a fully approximated aircraft model (FAAM) which linearizes the MRMLG's strut force model. In order to evaluate drop performance of the aircraft landing gear system with MR dampers, a 7-DOF aircraft model incorporating the nonlinear MRMLG is formulated using RecurDyn. The principal comparative param-eters are the coefficient of determination (R2) for system response of each model with Re-curDyn model and root mean square error (RMSE) which is the ensembles of CG dis-placement data for each model. In addition, the ensemble of time series data is created for diverse drop scenarios, providing valuable insights into the performance of the proposed drop test models of the aircraft landing gear system featuring MR dampers.
Keywords
magnetorheological (MR) fluid; MR landing gear; drop test performance; aircraft dynamic model
Subject
Engineering, Aerospace Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
