How does the emergency hydraulic system function normally?

The emergency hydraulic system in the T-6 aircraft is designed to provide hydraulic pressure in case of a primary hydraulic system failure. It operates normally from an accumulator, which is a pressurized storage device that contains hydraulic fluid. This allows the emergency system to maintain pressure and provide necessary functions, such as operating flight control surfaces and landing gear, ensuring that the aircraft can still be controlled and landed safely in an emergency situation.

The accumulator acts as a reserve, releasing hydraulic fluid when needed, and it is automatically kept charged during normal operations. This provides an immediate and efficient means of accessing hydraulic power without reliance on additional energy sources or manual intervention. Other options do not typically serve as the primary mechanism for emergency hydraulic operation; for example, a hand pump would require pilot input for operation and may not provide the quick response needed in an emergency. The effectiveness and reliability of the accumulator make it the primary source for emergency hydraulic functioning.