Dual-stage, mixed gas/fluid shock strut servicing

1. A method for servicing a dual-stage, mixed 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 a primary chamber of the dual-stage, mixed gas/fluid shock strut until the secondary chamber pressure matches a primary chamber oil servicing reference curve; and

charging the primary chamber with a second quantity of compressed gas.

2. The method of claim 1 , wherein the primary chamber is charged with the second quantity of compressed gas until the secondary chamber pressure corresponds to the servicing temperature as indicated by a secondary chamber pressure servicing chart.

3. The method of claim 2 , further comprising extending the dual-stage, mixed gas/fluid shock strut in response to the pumping, wherein the dual-stage, mixed gas/fluid shock strut extends such that a shock strut extension and the secondary chamber pressure match the primary chamber oil servicing reference curve.

4. The method of claim 1 , further comprising extending the dual-stage, mixed gas/fluid shock strut to a shock strut extension corresponding to the secondary chamber pressure, in accordance with the primary chamber oil servicing reference curve, wherein the oil is pumped into the dual-stage, mixed gas/fluid shock strut until a primary chamber pressure is equal to the secondary chamber pressure.

5. The method of claim 3 , wherein the primary chamber oil servicing reference curve is provided in the form of at least one of a series of curves or a series of tables for various servicing temperatures.

6. The method of claim 1 , wherein the primary chamber is charged with the second quantity of compressed gas until a primary chamber pressure and a shock strut extension corresponds to a gas servicing reference curve.

7. The method of claim 1 , further comprising releasing an existing gas from the primary chamber.

8. The method of claim 1 , further comprising releasing an existing gas from the secondary gas chamber.

9. The method of claim 1 , further comprising releasing an existing oil from the primary chamber.

10. A method for servicing a dual-stage, mixed 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 oil into a primary chamber of the dual-stage, mixed gas/fluid shock strut, wherein the dual-stage, mixed gas/fluid shock strut extends in response to oil being pumped into the primary chamber until a first shock strut extension and the secondary chamber pressure match a primary chamber oil servicing reference curve; and

charging the primary chamber with a second quantity of compressed gas until a second shock strut extension and a primary chamber pressure match a gas servicing reference curve.

11. The method of claim 10 , wherein at least one of the oil servicing reference curve and the gas servicing reference curve correspond to the servicing temperature.

12. The method of claim 10 , further comprising measuring the servicing temperature.

13. The method of claim 10 , further comprising:

releasing a first existing gas from the primary chamber; and

releasing a second existing gas from the secondary gas chamber.

14. The method of claim 10 , further comprising draining an existing oil from the primary chamber.

15. A method for servicing a dual-stage, mixed 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 oil through a primary chamber of the dual-stage, mixed gas/fluid shock strut via an oil charge port and an oil bleed port;

extending the dual-stage, mixed gas/fluid shock strut, using a servicing tool, to a first 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 primary chamber until the secondary chamber pressure reaches a pre-determined pressure;

closing the oil charge port;

extending the dual-stage, mixed gas/fluid shock strut to a fully extended position; and

charging the primary chamber with a second quantity of compressed gas until a second shock strut extension and a primary chamber pressure match a gas servicing reference curve.

16. The method of claim 15 , wherein at least one of the oil servicing reference curve and the gas servicing reference curve correspond to the servicing temperature.

17. The method of claim 15 , further comprising measuring the servicing temperature.

18. The method of claim 15 , wherein the pre-determined pressure is equal to the secondary chamber pressure.

19. The method of claim 15 , further comprising:

releasing a first existing gas from the primary chamber; and

releasing a second existing gas from the secondary gas chamber.

20. The method of claim 15 , further comprising draining an existing oil from the primary chamber.