| 摘要 |
A fuel supply system for an aircraft for delivering fuel from a fuel tank to an aircraft powerplant, comprises: a fuel flow passage along which fuel flows from said tank to said powerplant, the passage having a downstream end adjacent the powerplant and an upstream end adjacent the tank; a downstream pump associated with said powerplant for drawing fluid along said passage to supply it to said powerplant; an upstream pump disposed in or associated with said tank and operable to pump fluid along said passage; a pressure sensor for monitoring the inlet pressure to said downstream pump; and a fuel system controller responsive to said sensor to control said upstream pump to maintain pressure at the inlet to said downstream pump at or above a predetermined threshold. The controller can respond to a pressure measurement downstream of the downstream pump instead of upstream of the downstream pump. |
