What is the purpose of an Oleo strut in the aircraft's landing gear?

The purpose of an Oleo strut in an aircraft's landing gear is primarily to assist in shock absorption. This device functions using a design that consists of a sealed cylinder filled with both air and hydraulic fluid. When the aircraft lands, the energy from the impact is absorbed as the strut compresses, allowing it to cushion the aircraft and reduce the forces transmitted to the airframe. This is crucial for ensuring a smooth landing, protecting both the aircraft structure and the occupants from the stresses of landing.

In contrast, while the Oleo strut does support the weight of the aircraft and contributes to overall structural integrity, its primary role lies in managing shock loads during landing operations. The stabilization of landing gear during taxi involves different mechanisms such as lock mechanisms and alignment features, rather than the shock absorption function of the Oleo strut.