What is a main advantage of centrifugal-type boost pumps in an aircraft?

The main advantage of centrifugal-type boost pumps in an aircraft is the ability to increase fuel pressure to engine-driven pumps. These pumps are designed to provide a steady and consistent flow of fuel, which is crucial for maintaining optimal engine performance. By boosting the fuel pressure, centrifugal pumps ensure that the engine-driven pumps receive adequate fuel supply, thereby enhancing engine efficiency and performance, especially during high-demand phases such as takeoff and climb.

Centrifugal pumps operate effectively at relatively low inlet pressures, which allows them to maintain a continuous flow of fuel without significant fluctuations. This capability is essential in gravity-fed fuel systems or in configurations where the fuel supply tank is located below the engine. Overall, the consistent fuel pressure helps prevent issues like vapor lock or fuel starvation, which can compromise engine performance and reliability.