Patent ID: 11867185
Assignee: FEDERAL INDUSTRIES, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  B  G | IPC B  F  G

Claim 6:
7. An aerial refueling system for refueling a receiver aircraft in flight from a tanker aircraft, the aerial refueling system comprising:
a fuel delivery system comprising a motor operable to be driven by a hydraulic fluid pressure;
a fuel pump coupled to the fuel delivery system, the fuel pump comprising a variable displacement motor operable to be driven by the hydraulic fluid pressure; and
a drive system controller comprising instructions operable to control the variable displacement motor during a fuel delivery process in modes comprising:
a flow control mode to maintain an output fuel flow rate from the fuel pump to a predetermined maximum inlet pressure at a reception coupling for a receiver aircraft;
a fuel pressure control mode to regulate a displacement of the variable displacement motor to not exceed the predetermined maximum inlet pressure; and
a priority mode to reduce the displacement of the variable displacement motor in response to a decrease in the hydraulic fluid pressure.