Deployable satellite solar panel hinge mechanism
The disclosed technology includes systems, methods, and mechanism configurations related to satellite solar panels, including stowing arrangements, deployment sequences, special purpose hinges, hold down and release mechanisms, and associated components for controlled deployment of the satellite solar panels.
1. A system for constraining and releasing a satellite solar array of panels, comprising:
a burn resistor mounted to a circuit board, the burn resistor being configured to heat up when current passes through;
a burn wire configured to restrain the satellite solar array of panels in a stowed position relative to a satellite body, wherein the burn wire is configured to be severed by the burn resistor, allowing the panels to unfold and deploy from the satellite body; and
a restraining hook mounted to the circuit board and disposed on either side of the burn resistor to increase a contact surface area between the burn wire and the burn resistor.
2. The system of claim 1 , wherein the burn wire includes a monofilament.
3. The system of claim 1 , wherein the circuit board acts as a thermal isolation panel to at least partially constrain heat generated when the current flows through the burn resistor.
4. The system of claim 1 , further comprising a screw configured to secure the burn wire with respect to the burn resistor.
5. The system of claim 1 , further comprising a monofilament configured to secure the panels against the satellite body.
6. The system of claim 1 , wherein the circuit board is secured to a top surface of an outer panel of the satellite solar array of panels.
7. A system for constraining and releasing a satellite solar panel, comprising:
a burn resistor configured to heat up when current passes through;
a burn wire configured to restrain an outer stowed solar panel, wherein the burn wire is configured to be severed by the burn resistor, allowing the outer stowed panel to unfold and deploy;
a restraint disposed on a side of the burn resistor and engaging the burn wire so as to increase a contact surface area between the burn wire and the burn resistor; and
an activation circuit configured to selectively control the current through the burn resistor to sever the burn wire for controllable deployment of the outer stowed solar panel.
8. The system of claim 7 , wherein the restraint comprises restraining pins disposed on either side of the burn resistor, each restraining pin configured to increase the contact surface area between the burn wire and the burn resistor.
9. The system of claim 7 , wherein the activation circuit includes a power source connected to the burn resistor via a controllable switching device.
10. The system of claim 9 , wherein the controllable switching device is configured to receive an actuation signal from an on-board control to activate the current to flow through the burn resistor.
11. The system of claim 7 , wherein the restraint comprises restraining hooks disposed on either side of the burn resistor, each restraining hook configured to increase the contact surface area between the burn wire and the burn resistor.
12. The system of claim 7 , wherein the restraint engages the burn wire on a side of the burn wire that is opposite to a side of the burn wire in contact with the burn resistor.
13. The system of claim 12 , wherein the restraint comprises a first restraint spaced apart from and disposed on one side of the burn resistor, and a second restraint spaced apart and disposed on an opposite side of the burn resistor from the first restraint.
14. A method of controlling deployment of an array of satellite solar panels, comprising:
securing the array of satellite solar panels against a satellite body with a burn wire;
restraining the burn wire against a burn resistor using a restraint engaging the burn wire so as to increase a contact surface area between the burn wire and the burn resistor;
selectively energizing, with an activation circuit, the burn resistor in contact with the burn wire;
severing the burn wire by selectively energizing the activation circuit;
releasing by the severing, at least a secured end of the satellite solar panels; and
unrolling the satellite solar panels into a deployed configuration.
15. The method of claim 14 , wherein restraining comprises restraining the burn wire against the burn resistor using a restraint on each side of the burn resistor, each restraint increasing the contact surface area between the burn wire and the burn resistor.
16. The method of claim 14 , wherein restraining the burn wire comprises restraining the using a plurality of restraints to engage the burn wire against at least two burn resistors and wherein selectively energizing directs current through the at least two burn resistors to sever the burn wire.
17. The method of claim 16 , further comprising thermally isolating the at least two burn resistors by a circuit board to contain at least a portion of heat generated by the at least two burn resistors.
18. The method of claim 17 , further comprising securing the circuit board to at least one panel of the array of satellite solar panels.
19. The method of claim 17 , further comprising mechanically coupling the two burn resistors to the circuit board.
20. The method of claim 14 , wherein the burn wire includes a monofilament.