The information below was gathered from the 2018 Simcenter Conference - Americas that took place October 15-17 in Detroit, Michigan.
Author: Anthony Laurella, MBSE Specialist
Thrust reversers are critical in ensuring an aircraft begins decelerating quickly and immediately after touchdown. They operate by placing an obstruction in the flow path of engine exhaust gases to redirect the flow. Since the mechanism must be strong and reliable, it is important to understand the dynamics of critical components during typical duty cycles and how they affect the entire assembly. Simcenter Amesim enables one to evaluate the transient performance of mechatronic systems by using libraries of graphical icons from electrical, hydraulic and mechanical domains. It provides the tools to construct these systems and quickly evaluate the behavior of individual components and test controls against a virtual prototype. By the connecting, these systems to Simcenter 3D Motion, the accuracy of motion studies can be improved by improving the detail and precision of boundary conditions to calculate speed and positions of bodies. Once components are connected together in a building block approach, parameters such as gear ratio, mass, and motor properties are injected to achieve the correct behavior of the complete system. Then multiple duty cycles can quickly be tested to size the individual components, predict the dynamics of the motor and improve the controls algorithms all before a prototype is built. By using the built-in modules of Simcenter Motion, an Amesim model can transmit the loads to the flexible body. This process servers to improve the accuracy of the mechanism position and adds fidelity to the boundary loads fed to Simcenter 3D Motion by linking them to the Simcenter Amesim actuator model. The end result is a highly accurate full physical model against which controls can be validated with certainty.