FWD INBD Uplock spring bungeer Downlock spring bungee Downlock actuator Reaction link Uplock actuator Downlock Side strut Shock strut Uplock roller Gravel deflector Walking beam Beam hanger Main gear actuator Ground speed brake cable (right gear only) Trunnion link Drag strut Torsion links Axle Universal side strut fitting Damper hydraulic line Main gear damper Figure 13-10.  Nomenclature of a main landing gear bogie truck. Leaf-Type Spring Gear Shock Absorbing and Non-Shock Absorbing  Landing Gear  13-6 Many aircraft utilize flexible spring steel, aluminum, or  composite struts that receive the impact of landing and return  it to the airframe to dissipate at a rate that is not harmful. The  gear flexes initially and forces are transferred as it returns  to its original position.  [Figure 13-13]  The most common  example of this type of non-shock absorbing landing gear  are the thousands of single-engine Cessna aircraft that use  In addition to supporting the aircraft for taxi, the forces of  impact on an aircraft during landing must be controlled by the  landing gear. This is done in two ways: 1) the shock energy is  altered and transferred throughout the airframe at a different  rate and time than the single strong pulse of impact, and 2) the  shock is absorbed by converting the energy into heat energy. 