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US 10,865,848 B2Granted
Dual-stage, separated gas/fluid shock strut servicing
AssigneeGoodrich Corporation
InventorsAmir Fazeli, Adnan Cepic, Susanne M. Reber
Life of this patent
Estimating the term…
Abstract
A method for servicing a dual-stage, separated gas/fluid shock strut may comprise measuring a servicing temperature, charging a secondary gas chamber with compressed gas, wherein a secondary chamber pressure corresponds to the servicing temperature, pumping oil into the shock strut, and charging a primary gas chamber with compressed gas.
Claims20
A method for servicing a dual-stage, separated gas/fluid shock strut, comprising:
- measuring a servicing temperature;
- charging a secondary gas chamber with a first quantity of compressed gas, wherein a secondary chamber pressure corresponds to the servicing temperature;
- pumping an oil into an oil chamber of the dual-stage, separated gas/fluid shock strut subsequent to the secondary gas chamber being charged with the first quantity of compressed gas;
- and
- charging a primary gas chamber with a second quantity of compressed gas,
- wherein the primary gas chamber is fluidly separated from the oil chamber via a first separator piston and the secondary gas chamber is fluidly separated from the oil chamber via a second separator piston.
3 more elements
A method for servicing a dual-stage, separated gas/fluid shock strut, comprising:
- charging a secondary gas chamber with a first quantity of compressed gas, wherein a secondary chamber pressure corresponds to a servicing temperature;
- pumping an oil into an oil chamber of the dual-stage, separated gas/fluid shock strut, wherein the dual-stage, separated gas/fluid shock strut extends until a first shock strut extension and the secondary chamber pressure match an oil servicing reference curve;
- and
- charging a primary gas chamber with a second quantity of compressed gas until a second shock strut extension and a primary chamber pressure match a primary chamber servicing reference curve,
- wherein the primary gas chamber is fluidly separated from the oil chamber via a first separator piston and the secondary gas chamber is fluidly separated from the oil chamber via a second separator piston.
2 more elements
A method for servicing a dual-stage, separated gas/fluid shock strut, comprising:
- charging a secondary gas chamber with a first quantity of compressed gas, wherein a secondary chamber pressure corresponds to a servicing temperature;
- circulating an oil through an oil chamber of the dual-stage, separated gas/fluid shock strut via an oil charge port and an oil bleed port;
- extending the dual-stage, separated gas/fluid shock strut to a shock strut extension corresponding to the secondary chamber pressure according to an oil servicing reference curve;
- closing the oil bleed port;
- pumping the oil into the oil chamber until an oil chamber pressure reaches a pre-determined pressure while maintaining the shock strut extension;
- closing the oil charge port;
- extending the dual-stage, separated gas/fluid shock strut to a fully extended position;
- and
- charging a primary gas chamber with a second quantity of compressed gas until a shock strut extension and a primary chamber pressure match a primary chamber servicing reference curve.
6 more elements
Dependencies are inferred from the claim text.