The dynamic response of aircraft landing gear at the moment of landing with regard to smart fluid dampers content MR

Document Type : English

Authors

1 Department of Mechanical Engineering, Dashtestan Branch, Islamic Azad University, Boushehr, Iran

2 Department of Mechanical Engineering, College of Mechanical Engineering, Dashtestan branch, Islamic Azad University, Borazjan, Iran

Abstract

Dynamics and vibrations of the aircraft at the moment of impact with the ground is an important issue in aircraft design and its suspension systems. Different models for spring and damper have been used in the design of aircraft. One of the innovative ideas is MR Fluid Technology in its design. These shock absorbers are actually created a semi-active control system which by setting a magnetic field, the viscosity of the fluid can be adjusted and led to the desired damper so that the vibrations of the aircraft at the moment of landing reach the minimum amount. To achieve this purpose in the present study at First, a passive shock absorber is modeled and then an MR shock absorber which could provide the necessities of a landing gear system, have been analyzed. Finally, after writing the differential equations, the vibrational charts of the passive mode with semi active have been compared and the results confirmed and confirmed.

Keywords