What is the role of fluid reservoirs in the ERJ hydraulic system?

Fluid reservoirs in the ERJ hydraulic system serve the essential function of storing hydraulic fluid. This storage is critical because the hydraulic system requires a consistent supply of pressurized fluid to operate various components like landing gear, flaps, and brakes.

By maintaining a reserve of hydraulic fluid, the reservoirs ensure that there is always an adequate amount ready to be pressurized and sent to the necessary components when needed. This capability is vital for the smooth operation and reliability of the aircraft's hydraulic systems. The design of the reservoirs also plays a role in accommodating changes in fluid volume due to thermal expansion, system operation, and fluid transfer during different phases of flight.

While reservoirs can indirectly influence pressure and may affect temperature management by providing a space for fluid to cool, their primary and most direct role is to store hydraulic fluid, making the fluid storage function the most appropriate choice for this question.