SHOCK ABSORBERThe shock absorber is a telescopic oleo-pneumatic unit which includes the sliding tube. It is installed in the main fitting to transmit the landing, take off and taxiing loads to the wing. When the shock absorber is compressed, the load is transmitted to the hydraulic fluid and nitrogen gas. The shock absorber is a 2 stage unit and contains four chambers:- a first stage gas chamber contains gas at a low pressure and hydraulic fluid,- a recoil chamber that contains hydraulic fluid,- a compression chamber that contains hydraulic fluid,- a 2nd stage gas chamber that contains gas at a high pressure.Primary control of the shock absorber recoil is:- the fluid flow from the recoil chamber into the gas chamber,- the fluid flow from the gas chamber into the compression chamber.