Solar arrays, deployment mechanisms therefor, and related methods
View Patent ↗Mechanisms for deploying a solar array include an elongated deployment member routed along a first panel, along an extension, and at least partially along a second panel. The elongated deployment member is configured to, upon retraction of the elongated deployment member by a deployment motor, move the extension into an extended position and rotate the second panel about a hub located at a distal end of the extension. Solar array assemblies include such a mechanism. Methods of deploying a solar array include retracting an elongated deployment member to rotate an extension into an extended position and further retracting the elongated deployment member to rotate a panel coupled to the extension approximately 360° about a hub of the extension.
1. A mechanism for deploying a solar array, the mechanism comprising:
an elongated deployment member operatively coupled to a deployment motor and routed along a first panel, along a first side of an extension coupled to the first panel, around a distal end of the extension, along a second side of the extension, and at least partially along a second panel coupled to the extension, the elongated deployment member configured to, upon retraction of the elongated deployment member by the deployment motor, move the extension into an extended position relative to the first panel and second panel and rotate the second panel about a hub located at a distal end of the extension.
2. The mechanism of claim 1 , wherein the deployment motor is positioned proximate a longitudinal end of the first panel proximate a support structure for supporting the solar array when the first panel is deployed.
3. The mechanism of claim 1 , wherein the extension is pivotally coupled to the first panel and the second panel proximate a longitudinal end of the first panel opposite a support structure for supporting the solar array when the first panel is deployed.
4. The mechanism of claim 1 , further comprising at least one spring configured to retain the extension in the extended position.
5. The mechanism of claim 1 , further comprising one or more springs coupled to the extension, the one or more springs configured to provide a motive force to assist in the movement of the extension into the extended position.
6. The mechanism of claim 1 , wherein the elongated deployment member is further routed around a first elongated deployment member guide positioned proximate a longitudinal end of the first panel opposite a support structure for supporting the solar array when the first panel is deployed, around a second elongated deployment member guide coupled to the distal end of the extension, and around a third elongated deployment member guide positioned proximate a longitudinal end of the second panel opposite a support structure for supporting the solar array when the second panel is deployed.
7. The mechanism of claim 1 , further comprising a hinge coupling the solar array to a support structure for supporting the solar array, the first panel and the second panel configured to rotate from a stowed position into a staged position about the hinge, the first panel and the second panel in the staged position oriented at substantially 90° compared to the stowed position.
8. The mechanism of claim 1 , wherein the elongated deployment member being operatively coupled to the deployment motor comprises the elongated deployment member being attached to a drive shaft of the deployment motor.
9. The mechanism of claim 1 , wherein the hub defines a first axis of rotation, wherein the extension is coupled to the first panel and to the second panel with a hinged connection defining a second axis of rotation, and wherein the first axis of rotation is orthogonal to the second axis of rotation.
10. The mechanism of claim 1 , wherein the extension comprises a pivot member coupled to a static member via the hub.