Abstract

Abstract: An aircraft landing gear system must absorb the kinetic energy produced by a landing impact and excitations caused
by the aircraft travelling over an uneven runway surface. This is the necessary requirement of a successfully designed landing
system. The oleo-pneumatic shock is the most common type of shock absorber landing gear system used in aircrafts. It dissipates
the kinetic energy produced by impacts arising when an airplane lands at high speed but also offers a comfortable ride to
passengers when the airplane taxies at low speed. The objective of this project is to determine the stress ,displacement ,strain,
shear stress of of a nose gear using the different materials like Ferrium M54, Ti 10Al 2Fe 3v , Ti 6Al-6v-2sn , Al 7075 of an
aircraft during landing using structural finite element analysis. The landing gear was first modeled using catia software and
then imported into Ansys software perform a satic and modal analysis. The apply the working forces on Nose landing gear were
taken the boundary conditions. finally concluded the which material is the suitable for landing gear based on the stress ,
displacement ,strain, shear stress values.
Keywords—Landing gear, shock absorber, loads, stresses, rebound chamber models.