What is the difference between a single acting and double acting hydraulic cylinder in a TBM system, and why is this relevant?

The key difference lies in how the cylinder extends and retracts. A single-acting hydraulic cylinder uses hydraulic pressure to extend the piston in one direction only. Retraction is typically achieved by a spring or by gravity. A double-acting hydraulic cylinder uses hydraulic pressure to both extend and retract the piston. This is achieved by having two separate ports for applying ....