Patent ID: 11867206
Assignee: AIRBUS OPERATIONS LIMITED
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 19:
20. A method of removing hydraulic fluid from an aircraft hydraulic system, wherein the hydraulic system comprises:
a fluid path of hydraulic fluid;
a hydraulic fluid port through which the hydraulic fluid can escape from the hydraulic system; and
a hydraulic fuse in the fluid path, wherein the hydraulic fuse comprises a fuse member configured to move between a shutoff position in which the fuse member prevents the hydraulic fluid from escaping from the hydraulic system via the hydraulic fluid port, and a reset position in which the fuse member does not prevent the hydraulic fluid from escaping from the hydraulic system via the hydraulic fluid port,, the method comprising:
generating a series of pulses in the hydraulic fluid, wherein each pulse causes the hydraulic fluid to escape from the hydraulic system via the hydraulic fluid port, each pulse causes the fuse member to move away from its reset position, and after each pulse the fuse member returns to its reset position.