Which component is critical for maintaining fuel flow in the GTM?

The high-pressure fuel pump is integral to maintaining fuel flow in the gas turbine module (GTM) because it is responsible for delivering fuel from the storage tank to the fuel injectors at the required pressure. This pump ensures that an adequate and consistent supply of fuel is available for combustion, which directly affects the performance and efficiency of the gas turbine. Without a properly functioning high-pressure fuel pump, fuel flow could become inconsistent, leading to potential combustion instability or even shutdown of the turbine.

Other components, while important in their respective roles, do not directly ensure the fuel flow. A lube oil pump is essential for lubricating various moving parts within the gas turbine system, and a fuel filter is crucial for removing impurities from the fuel before it reaches the engine but does not directly control the flow. The air compressor, while vital for compressing air for combustion, does not play a role in the fuel delivery system.