DRIVING STAGE FLUID FLOW CUSHION VALVE PRV HIGH PRESSURE AIR SOLENOID (TYPICAL) TRAVEL START DEPRESSURIZED STOP PRESSURIZED DEPRESSURIZATION PISTON LOADED RETURN SPRINGS VC1 VC2 DEPRESSURIZED HYDRAULIC FLUID PRESSURIZED HYDRAULIC FLUID DSA AT MAXIMUM VOLUME DISPLACEMENT PISTON (DP) AT MINIMUM VOLUME VOLUME CHANGE (VC1) VOLUME CHANGE (VC2) (VC2 > VC1) DSA FORCE > DP FORCE The cushion tank is pressurized and electrical power is established, causing the appropriate solenoids to be energized (RED) which causes the flow pattern illustrated in green. The DSA’s force advantage over the DP’s has been empirically verified by scientists to be > 15% with the friction burdened demonstration models. An Aerospace scientist from U of T calculated a theoretical 26% force advantage in favour of the DSA over the DP with equal fluids into each. The DSA pumps more fluid from the DP than the DSA requires; therefore, some of the fluid pumped from the DP goes into the cushion tank. Of the > 15% force advantage the invention uses < 5% to overcome friction, rest itself and produce power to activate the solenoid function. The remaining > 10% is available for work functions external to the invention. The DSA exerts less force as it expands; therefore, the drive stage stops at about 20° expansion. (See page 13.255 in the APS Training Manual for full details.) 15.339
RkJQdWJsaXNoZXIy ODY1ODQy