Planar vibration isolator

1. A vibration isolation system, comprising:

a first pair of fluid chambers disposed to isolate first vibrations between a first body and a second body, wherein the first pair of fluid chambers is coupled to the first body and the second body, wherein the first vibrations are substantially parallel to a first axis, wherein the first body is a propeller hub, a rotor hub, a pylon attachment, or an engine, wherein the second body is a propeller shaft, a rotor mast, or a body attachment; and wherein the body attachment may be a fuselage attachment or a nacelle attachment;

a second pair of fluid chambers disposed to isolate second vibrations between the first body and the second body, wherein the second pair of fluid chambers is coupled to the first body and the second body, and wherein the second vibrations are substantially parallel to a second axis that is substantially perpendicular to the first axis;

a first inertia track disposed to place the first pair of fluid chambers in fluid communication;

a second inertia track disposed to place the second pair of fluid chambers in fluid communication; and

a plurality of elastic energy storage devices coupled to the first body and the second body and disposed to isolate vibrations between the first body and the second body.

2. The system of claim 1 , wherein the plurality of elastic energy storage devices comprises springs.

3. The system of claim 1 , wherein adjacent fluid chambers are separated by a plurality of compartments, each compartment enclosing an elastic energy storage device.

4. The system of claim 1 , wherein each of the fluid chambers of the first and second pairs of fluid chambers is filled with a non-compressible fluid, a non-viscous fluid, a non-freezable fluid, a fluid with a high density or specific gravity, a hydraulic fluid, oil, or some other fluid.

5. The system of claim 1 , wherein the first pair of fluid chambers is disposed on opposite sides of the first body and the second pair of fluid chambers is disposed on opposite sides of the first body.

6. The system of claim 1 , wherein the system isolates vibrations in a helicopter, a tiltrotor craft, or an airplane.

7. A vibration isolation system comprising:

a plurality of fluid chambers filled with a fluid and disposed to isolate vibrations between a first body and a second body, wherein the plurality of fluid chambers is coupled to the first body and the second body, wherein the vibrations occur in or parallel to a plane, wherein the first body is a propeller hub, a rotor hub, a pylon attachment, or an engine, wherein the second body is a propeller shaft, a rotor mast, or a body attachment, and wherein the body attachment may be a fuselage attachment or a nacelle attachment;

a plurality of inertia tracks, each inertia track disposed to place one fluid chamber of the plurality of fluid chambers in fluid communication with another of the fluid chambers of the plurality of fluid chambers; and

a plurality of elastic energy storage devices coupled to the first body and the second body and disposed to isolate the vibrations between the first body and the second body.

8. The system of claim 7 , wherein the plurality of elastic energy storage devices comprises springs.

9. The system of claim 7 , further comprising a compartment enclosing each elastic energy storage device.

10. The system of claim 7 , wherein each of the plurality of fluid chambers is filled with a non-compressible fluid, a non-viscous fluid, a non-freezable fluid, a fluid with a high density or specific gravity, a hydraulic fluid, oil, or some other fluid.

11. The system of claim 7 , wherein the system isolates vibrations in a helicopter, a tiltrotor craft, or an airplane.

12. A method of isolating vibration in an aircraft, comprising:

disposing a first pair of fluid chambers to isolate first vibrations between a first body and a second body, wherein the first pair of fluid chambers is coupled to the first body and the second body, wherein the first vibrations are substantially parallel to a first axis, wherein the first body is a propeller hub, a rotor hub, a pylon attachment, or an engine, wherein the second body is a propeller shaft, a rotor mast, or a body attachment, and wherein the body attachment may be a fuselage attachment or a nacelle attachment;

disposing a second pair of fluid chambers to isolate second vibrations between the first body and the second body, wherein the second pair of fluid chambers is coupled to the first body and the second body, and wherein the second vibrations are substantially parallel to a second axis that is substantially perpendicular to the first axis;

disposing a first inertia track to place the first pair of fluid chambers in fluid communication;

disposing a second inertia track to place the second pair of fluid chambers in fluid communication;

disposing a plurality of elastic energy storage devices to isolate the first vibrations or the second vibrations to the first body or to the second body;

filling each fluid chamber with fluid; and

isolating vibrations between the first body and the second body using the fluid in the first pair of fluid chambers, the second pair of fluid chambers, the first inertia track, the second inertia track, and the elastic energy storage devices.

13. The method of claim 12 , wherein the plurality of elastic energy storage devices comprises springs.

14. The method of claim 12 , wherein adjacent fluid chambers are separated by a plurality of compartments, each compartment enclosing an elastic energy storage device.

15. The method of claim 12 , wherein each of the fluid chambers of the first and second pairs of fluid chambers is filled with, a non-compressible fluid, a non-viscous fluid, a non-freezable fluid, a fluid with a high density or specific gravity, a hydraulic fluid, oil, or some other fluid.

16. The method of claim 12 , wherein the first pair of fluid chambers is disposed on opposite sides of the first body and the second pair of fluid chambers is disposed on opposite sides of the first body.

17. The method of claim 12 , wherein the method isolates vibrations in a helicopter, a tiltrotor craft, or an airplane.

18. A method of isolating vibrations, comprising:

disposing a plurality of fluid chambers disposed to isolate vibrations between a first body and a second body, wherein the plurality of fluid chambers is coupled to the first body and the second body, wherein the vibrations are in or parallel to a plane, wherein the first body is a propeller hub, a rotor hub, a pylon attachment, or an engine, wherein the second body is a propeller shaft, a rotor mast, or a body attachment, and wherein the body attachment may be a fuselage attachment or a nacelle attachment;

disposing a plurality of inertia tracks, each inertia track disposed to place to one fluid chamber of the plurality of fluid chambers in fluid communication with another of the fluid chambers of the plurality of fluid chambers;

disposing a plurality of elastic energy storage devices disposed to isolate the vibrations between the first body and the second body;

filling each fluid chamber with a fluid; and

isolating the vibrations between the first body and the second body using the fluid in the plurality of fluid chambers, the plurality of inertia tracks, and the elastic energy storage devices.

19. The method of claim 18 , wherein the plurality of elastic energy storage devices comprises springs.

20. The method of claim 18 , wherein each elastic energy storage device is enclosed with a compartment.

21. The method of claim 14 , wherein each of the plurality of fluid chambers is filled with, a non-compressible fluid, a non-viscous fluid, a non-freezable fluid, a fluid with a high density or specific gravity, a hydraulic fluid, oil, or some other fluid.

22. The method of claim 14 , wherein the method isolates vibrations in a helicopter, a tiltrotor craft, or an airplane.

23. A rotorcraft, comprising:

a fuselage;

one or more engines coupled to the fuselage; and

a vibration isolation system coupled to the one or more engines comprising:

a first pair of fluid chambers, filled with a fluid and disposed to isolate first vibrations between a first body and a second body, wherein the first vibrations are substantially parallel to a first axis, wherein the first body is a propeller shaft, a rotor mast, a pylon attachment, or an engine, wherein the second body is a propeller hub, a rotor hub, or a body attachment, wherein the body attachment may be a fuselage attachment or a nacelle attachment, and wherein the first pair of fluid chambers is coupled to first body and the second body;

a second pair of fluid chambers, filled with the fluid, and disposed to isolate second vibrations between the first body and the second body, wherein the second vibrations are substantially parallel to a second axis that is substantially perpendicular to the first axis, and wherein the second pair of fluid chambers is coupled to first body and the second body;

a first inertia track disposed to place the first pair of fluid chambers in fluid communication;

a second inertia track disposed to place the second pair of fluid chambers in fluid communication; and

a plurality of elastic energy storage devices coupled to first body and the second body and disposed to isolate the first vibrations or the second vibrations between the first body and the second body.

24. The rotorcraft of claim 23 , wherein the plurality of elastic energy storage devices comprises springs.

25. The rotorcraft of claim 23 , wherein adjacent fluid chambers are separated by a plurality of compartments, each compartment enclosing an elastic energy storage device.

26. The rotorcraft of claim 23 , wherein each of the fluid chambers of the first and second pairs of fluid chambers is filled with a non-compressible fluid, a non-viscous fluid, a non- freezable fluid, a fluid with a high density or specific gravity, a hydraulic fluid, oil, or some other fluid.

27. The rotorcraft of claim 23 , wherein the first pair of fluid chambers is disposed on opposite sides of the first body and the second pair of fluid chambers is disposed on opposite sides of the first body.

28. A rotorcraft, comprising:

a fuselage;

one or more engines coupled to the fuselage; and

a vibration isolation system coupled to the one or more engines comprising:

a plurality of fluid chambers filled with a fluid, and disposed to isolate vibrations between a first body and a second body, wherein the vibrations occur in or parallel to a plane, wherein the first body is a propeller shaft, a rotor mast, a pylon attachment, or an engine, wherein the second body is a propeller hub, a rotor hub, or a body attachment, wherein the body attachment may be a fuselage attachment or a nacelle attachment, and wherein the plurality of fluid chambers is coupled to the first body and the second body;

a plurality of inertia tracks, each inertia track disposed to place to one fluid chamber of the plurality of fluid chambers in fluid communication with another of the fluid chambers of the plurality of fluid chambers; and

a plurality of elastic energy storage devices coupled to the first body and the second body and disposed to isolate the vibrations between the first body and the second body.

29. The rotorcraft of claim 28 , wherein the plurality of elastic energy storage devices comprises springs.

30. The rotorcraft of claim 28 , further comprising a compartment enclosing each elastic energy storage device.

31. The rotorcraft of claim 28 , wherein each of the plurality of fluid chambers is filled with a non-compressible fluid, a non-viscous fluid, a non-freezable fluid, a fluid with a high density or specific gravity, a hydraulic fluid, oil, or some other fluid.