Servicing procedure for single-stage mixed fluid/gas shock strut
AssigneeGoodrich Corporation
InventorsAmir Fazeli, Adnan Cepic, Susanne Reber
Life of this patent
Estimating the term…
Abstract
Methods for servicing shock struts are provided. In various embodiments, a method for servicing a shock strut may comprise deflating the shock strut; compressing the shock strut until the shock strut is in a fully compressed position; and charging the shock strut with a liquid until a pressure of the liquid decreases a volume of a residual air located inside of the shock strut. In various embodiments, charging the shock strut with liquid under pressure may reduce the volume of trapped air inside of the shock strut to a negligible volume, eliminating the servicing variations.
Claims11
A method for servicing a shock strut comprising:
- deflating the shock strut;
- compressing the shock strut until the shock strut is in a fully compressed position;
- and
- charging the shock strut with a liquid until a pressure of the liquid decreases a volume of a residual air located inside of the shock strut while the shock strut remains in the fully compressed position;
- and
- with the shock strut in the fully compressed position, increasing the pressure of the liquid until the shock strut reaches a pre-determined extension, wherein the pressure is increased by moving additional liquid into the shock strut.
A method for weight on wheel shock strut servicing comprising:
- deflating the shock strut until the shock strut is in a fully compressed position;
- charging the shock strut with an oil until a pressure of the oil decreases a volume of a residual air located inside of the shock strut, wherein the charging the shock strut with the oil comprises pumping the oil into a second valve and closing a first valve in response to the oil exiting the shock strut via the first valve;
- and
- charging the shock strut with a gas until the gas comprises a pre-determined pressure.
Dependencies are inferred from the claim text.