How do HOP actuators provide mechanical work?
The heart of an HOP actuator is a sealed annular chamber containing paraffin in contact with resistance heating elements. When the elements are energized, the paraffin is heated through its melting point. SRC paraffin expands 15 percent in volume during melting. Because the paraffin is confined inside the actuator, the expansion creates hydraulic pressure. This pressure is translated to actuator extension through a proprietary “squeeze boot” seal.
