To what pressure does the hydraulic pump pressurize the normal system and emergency accumulator?

The hydraulic pump is designed to pressurize the normal system and emergency accumulator to a specific operating pressure that ensures the effective and safe functioning of the hydraulic system. In this case, the correct answer indicates that the hydraulic pump applies a pressure of 3,000 pounds per square inch (psi) with a tolerance of ± 120 psi.

This pressure is crucial as it must be high enough to operate various hydraulic components, such as actuators, but also must remain within safe limits to prevent system failure or damage. The ± 120 psi tolerance suggests that the system can operate effectively between 2,880 psi and 3,120 psi, accommodating variations due to temperature changes and system wear.

Hydraulic systems often require this level of pressure for optimal performance and response, particularly in applications where instantaneous and reliable actuation is necessary. Thus, the pressure of 3,000 ± 120 psi reflects the need for a robust system capable of meeting operational demands.