Method and system for controlling swaying of an object
A method of configuring a mount or of controlling sway in an object to be mounted includes configuring isolators of the mount to put a center of elasticity of the flexible mount at a desired height relative to a base of the mount. This desired distance may be at a location of expected minimum clearance between the object to be mounted and the structure expected to surround the object to be mounted and is the center of rotation of the flexible mount. The location of the center of elasticity also may be farther from the base than a center of mass or gravity of the object to be mounted. An equation relating the location of the center of elasticity as a function of isolator material properties and of angle between the isolators and the base may be used to analytically predict the location of the center of elasticity and the center of rotation.
1. A method of configuring a flexible mount for receiving an object to be mounted, the method comprising:
choosing a desired location of least sway for the mount; and
configuring isolators of the mount to locate a center of elasticity of the flexible mount such that a center of rotation point of the mount, where there is zero net lateral motion, is at the location of least sway, wherein the configuring includes using an equation that relates a location of the center of elasticity and the center of rotation point as a function of material characteristics of the isolators.
2. The method of claim 1 , wherein the equation also relates the location of the center of elasticity and the center of rotation point as a function of inclination angle of the isolators.
3. The method of claim 2 , wherein the configuring the isolators includes configuring the inclination of the isolators relative to a base of the mount.
4. The method of claim 1 , wherein the equation also relates the location of the center of elasticity and the center of rotation point as a function of stiffness ratios of materials of the isolators.
5. The method of claim 1 , wherein the choosing the desired location includes choosing a location farther from the mount than a center of mass of the object to be mounted to the mount.
6. The method of claim 1 , wherein the choosing the desired location includes choosing a location farther from the mount than a distal end of the object to be mounted to the mount.
7. The method of claim 1 , wherein the choosing the desired location includes choosing a location that is substantially as far from the mount as a location of least clearance between object and structure around the object.
8. The method of claim 1 , wherein the object to be mounted is a payload of a missile nose, to be mounted at an aft end of an ojive missile nose cone.
9. The method of claim 1 , wherein the choosing the desired location of least sway to be a desired location of least sway due to lateral forces that have a component parallel to a base of the mount.