Oleo struts absorb and dissipate shock loads using a combination of two fluids — a gas and a hydraulic fluid — contained in two chambers — a cylinder and a piston. ... Gas in the upper chamber, functioning like a spring, is compressed by the hydraulic fluid to absorb the impact of touchdown as well as bumps during taxiing.

What absorbs the impact of landing on an oleo strut?

An oleo strut is a type of hydraulic shock absorber that is equipped on most commercial aircraft. A steel coil spring stores the impact energy then releases it into the oleo strut, where it is absorbed.

What is the difference between spring oleo struts and air oleo shock struts?

In spring oleo struts, the spring supports the A/C weight on the ground and during taxiing and oleo strut aborts the shock of landing. In air oleo struts, the air supports the A/C weight on the ground and abserts shocks during taxiing and oleo strut aborts the shock of landing.