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US 2025/0100706 A1Published application
Inerting system for an aircraft
OwnerJuan Luis MARCOS IZQUIERDOinventor
Life of this patent
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Abstract
An inerting system for an aircraft and a method of inerting a hydrogen system in an aircraft. Also an aircraft with such an inert system. In the inerting system, a part of an inerting gas that has already been supplied to the casing of the hydrogen system is mixed with pure inerting gas through a fluid recirculation system.
Claims15
An inerting system for an aircraft, the inerting system comprising:
- a casing at least partially housing a hydrogen system, the casing comprising at least one inlet and a first outlet, the first outlet configured to connect an inside of the casing with an outside of the aircraft;
- a pure inert gas supplying means configured to supply pure inert gas to the inside of the casing through an inlet conduct connected to the inert gas supplying means and to the at least one inlet of the casing;
- sensing means configured to measure a concentration of oxygen and a concentration of hydrogen of a fluid located inside the casing;
- inert fluid regulating means configured to regulate a passage of a flow of the pure inert gas inside of the casing through the inlet conduct;
- an outlet valve configured to regulate an outlet flow of fluid located inside the casing through the first outlet;
- a fluid recirculation system configured to recirculate a part of the fluid located inside the casing to the inlet conduct for supplying a recirculated fluid mixed with the pure inert gas to the inside of the casing;
- and
- control means in data communication with the sensing means and configured to independently control at least the outlet valve and the fluid recirculation system based on the concentration of oxygen and the concentration of hydrogen inside the casing,
- wherein the control means is configured to actuate a recirculation in the fluid recirculation system only when the concentration of oxygen, or the concentration of hydrogen of the fluid located inside the casing, or both are below first pre-set thresholds respectively.
6 more elements
A method for inerting a hydrogen system of an aircraft with an inerting system, the hydrogen system being at least partially housed in a casing, wherein the method comprises:
- supplying pure inert gas by a pure inert gas supplying means;
- exhausting part of a fluid located inside the casing through a first outlet with a first outlet valve;
- monitoring a concentration of oxygen and a concentration of hydrogen inside the casing with sensing means;
- recirculating a part of the fluid located inside the casing as a recirculated fluid through a fluid recirculation system of the inerting system when the concentration of hydrogen, or the concentration of oxygen of the fluid to be recirculated, or both are below first pre-set thresholds;
- and,
- supplying, to an inside of the casing, the recirculated fluid mixed with pure inert gas.
3 more elements
Dependencies are inferred from the claim text.