What type of pressure do fuel boost pumps strive to maintain?

Fuel boost pumps are designed to maintain a constant fuel pressure within the fuel system. This is crucial for ensuring that the engine receives a steady and reliable supply of fuel, regardless of variations in demand, such as changes in engine speed or altitude. Maintaining a constant fuel pressure allows for consistent engine performance and helps prevent issues such as fuel starvation or flooding.

By providing a stable pressure, the boost pump ensures that fuel injectors can operate effectively, delivering the correct amount of fuel for combustion. This stability also compensates for variations that can occur in the fuel system due to factors like temperature changes, which can affect fuel density, or fuel flow demands during different phases of flight.

It's important to note that while some systems may have variable pressures under specific operating conditions, the primary function of the fuel boost pump is to provide that constant pressure to protect engine operation and efficiency.