Load isolator apparatus
First Claim
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1. A suspension and damping system for use in mounting a first device to a second device, comprising:
- spring means connecting the first and second devices to provide stiffness;
a first fluid chamber having a first end connected to the first device;
a second fluid chamber having a first end connected to the second device;
first means connecting the first and second chambers so that an increase in volume of the first chamber is accompanied by a decrease in volume of the second chamber;
a third fluid chamber having a first end connected to the first device,fourth fluid chamber having a first end connected to the second device;
second means connecting the third and fourth chambers so that an increase in volume of the third chamber is accompanied by a decrease in volume of the fourth chamber;
a first fluid passage connecting the first and fourth chambers; and
a second fluid passage connecting the second and third chambers so that translational motions between the first and second devices is less stiff than rotational motions between the first and second devices.
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Abstract
A damping mounting structure for use between two members for isolating motion changes which incorporates a plurality of dampers connected between the two members in a closed geometric shape and which uses cross connections between the dampers located on opposite sides of the geometric shape so that translation motion between the two members is less stiff than rotational motion between the two members.
74 Citations
20 Claims
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1. A suspension and damping system for use in mounting a first device to a second device, comprising:
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spring means connecting the first and second devices to provide stiffness; a first fluid chamber having a first end connected to the first device; a second fluid chamber having a first end connected to the second device; first means connecting the first and second chambers so that an increase in volume of the first chamber is accompanied by a decrease in volume of the second chamber; a third fluid chamber having a first end connected to the first device, fourth fluid chamber having a first end connected to the second device; second means connecting the third and fourth chambers so that an increase in volume of the third chamber is accompanied by a decrease in volume of the fourth chamber; a first fluid passage connecting the first and fourth chambers; and a second fluid passage connecting the second and third chambers so that translational motions between the first and second devices is less stiff than rotational motions between the first and second devices. - View Dependent Claims (2, 3, 4)
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5. An arrangement for mounting a first member to a second member so that translational motion therebetween is less stiff than rotational motion therebetween, comprising:
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a plurality of dampers, each damper having first and second expandable fluid chambers connected together so that expansion of one of the first and second chambers is normally accompanied by contraction of the other of the first and second chambers and each damper having first and second external connectors with the first external connector of each damper connected to the first member and the second external connector of each damper connected to the second member to provide damping support between the first and second members; a plurality of springs mounted in parallel with the dampers between the first and second members; and a plurality of fluid conduits with a first one of the fluid conduits joining the first expandable chamber of a first damper with the second expandable chamber of a second damper to permit fluid flow therebetween and a second of the fluid conduits joining the first expandable chamber of the second damper to the second expandable chamber of the first damper to permit fluid flow therebetween so that with translational movement between the first and second members the first expandable chambers of the first and second dampers both expand while the second expandable chambers of the first and second dampers both contract but with rotational movement between the first and second members, the first expandable chamber of the first damper and the second expandable chamber of the second damper both expand while the second expandable chamber of the first damper and the first expandable chamber of the second damper both contract. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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13. Apparatus for dampingly supporting a payload of a missile from a launch vehicle movable along a launch axis so that the payload may respond to translational motions between the payload and the launch vehicle with a first stiffness but respond to rotational motions between the payload and the launch vehicle with a second stiffness greater than the first stiffness comprising:
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a plurality of at least six fluid dampers each including a housing and a joining device which separates the housing into first and second changeable volume chambers, each damper connected between the payload and the launch vehicle at angles with respect to the launch axis thereto to provide damping support therebetween and so that together, when viewed along the launch axis, the dampers form a closed geometrical shape around the launch axis to provide support between the payload and the launch vehicle; and
,a plurality of fluid conduits one each joining a first chamber in one each of the dampers to a second chamber in another each of the dampers located across the geometrical shape therefrom so that when translational force along the launch axis occurs the volume of the first chamber of each damper is changed in a direction to cause fluid in the second chamber of its oppositely disposed damper to change volume in the opposite direction to provide soft damping and so that when rotational force between the payload and the launch vehicle occurs, the volume of the first chamber of each damper is changed in a direction to cause fluid in the second chamber of its oppositely disposed damper to change volume in the same direction to provide hard damping. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification