Claims
- 1. A MEMS type safe and arm apparatus for a fuze, the apparatus being constructed on a die and comprising:a setback slider responsive to a first setback acceleration, the setback slider moving linearly in response to the first setback acceleration; a setforward slider responsive to a first setforward acceleration, the setback slider unlocking the setforward slider, the setforward slider moving linearly in response to the first setforward acceleration; a first rotor responsive to a second setback acceleration, the setforward slider unlocking the first rotor, the first rotor rotating in response to the second setback acceleration; a second rotor responsive to a second setforward acceleration, the first rotor unlocking the second rotor, the second rotor rotating in response to the second setforward acceleration; and an arming slider that moves linearly in response to the rotation of the second rotor to thereby arm the fuze.
- 2. The apparatus of claim 1 further comprising a reset spring connected to the setback slider, a spring bias head connected to the reset spring, a spring bias head locking socket and a second spring connected at one end to the spring bias head and at another end to the die.
- 3. The apparatus of claim 2 further comprising a first latching socket for receiving and locking the setback slider in place.
- 4. The apparatus of claim 3 wherein the setback slider includes a zigzag delay structure.
- 5. The apparatus of claim 1 wherein the setforward slider includes anchor legs, the apparatus further comprising a first lever and a linchpin, the first lever being connected to the linchpin, the linchpin locking the anchor legs of the setforward slider wherein, during its linear motion, the setback slider moves the first lever which moves the linchpin to unlock the anchor legs of the setforward slider.
- 6. The apparatus of claim 5 further comprising a second latching socket for receiving and locking the setforward slider in place.
- 7. The apparatus of claim 6 wherein the setforward slider includes a zigzag delay structure.
- 8. The apparatus of claim 1 further comprising a second lever and a catch pin, the catch pin being connected to the second lever, the catch pin locking the first rotor wherein, during its linear motion, the setforward slider moves the second lever which moves the catch pin to unlock the first rotor.
- 9. The apparatus of claim 1 further comprising a locking catch for locking the first rotor after rotation of the first rotor.
- 10. The apparatus of claim 1 wherein the first rotor further comprises a curved pin interlock for preventing rotation of the first rotor by interference with the setback slider, if the setback slider has not completed its linear motion.
- 11. The apparatus of claim 1 wherein the first rotor engages the second rotor to prevent rotation of the second rotor and wherein the first rotor disengages the second rotor when the first rotor rotates.
- 12. The apparatus of claim 1 further comprising a locking catch to lock the second rotor after its rotation.
- 13. The apparatus of claim 1 wherein the second rotor includes a curved surface which contacts and moves the arming slider linearly from an unarmed position to an armed position when the second rotor rotates.
- 14. The apparatus of claim 13 wherein the arming slider includes energetic material disposed thereon wherein the energetic material arms the fuze when the arming slider is in the armed position.
- 15. The apparatus of claim 1 further comprising a pair of springs, a spring arm connecting the pair of springs, the spring arm being connected to an end of the arming slider to thereby resist movement of the arming slider from the unarmed to the armed position.
- 16. The apparatus of claim 15 wherein the spring arm further comprises a pair of pins, the apparatus further comprising a pair of standoff latches, one standoff latch disposed on either side of the arming slider, the pair of pins being disposed in the pair of standoff latches when the arming slider is in the unarmed position wherein when the arming slider is in the armed position, the pins are removed from the standoff latches and the standoff latches prevent the pins from reentering the standoff latches, thereby preventing the arming slider from returning to the unarmed position.
FEDERAL RESEARCH STATEMENT
The inventions described herein may be manufactured, used licensed by or for the U.S. Government for U.S. Government purposes.
US Referenced Citations (10)