System for quick arming of detonation or excitation assembly

Patent metadata

Field	Value
Publication number	US-10718600-B2
Application number	US-201816479175-A
Country	US
Kind code	B2
Filing date	Jan 21, 2018
Priority date	Jan 22, 2017
Publication date	Jul 21, 2020
Grant date	Jul 21, 2020

Abstract

A system for quick arming of a detonation or excitation assembly, wherein the system comprises a first barrier means which, as long as it has not been removed, prevents full activation of an initiation chain of the assembly, and whose removal is dependent on receiving indication from at least one first sensor, and then its removal is reversible in a manner that it will return and once again prevent full activation of an initiation chain, and a second barrier means which also prevents full activation of the initiation chain as long as it has not been removed, and whose removal is dependent on receiving indication from at least one second sensor, and this—following after receiving indication from the first sensor, and removal of the second sensor is irreversible in a manner that leaves the initiation chain executable, and wherein the first and second sensors are independent of one another, and as long as no indication has been received from the second sensor, the first barrier means is returnable to its place in a manner that will return and once again prevent full activation of the initiation chain, and an active protection system utilizing a plurality of those quick arming system for activation of the protection system's interceptors while implementing a method for quick and selective arming of the active protection system's detonation or excitation assemblies.

First claim

The invention claimed is:

1. A quick-arming excitation assembly, comprising:
an initiation chain comprising a first segment and at least one additional segment;
a slider comprising the first segment of the initiation chain and movable along a path, the slider movable between an on-line position wherein the first segment is aligned with the at least one additional segment along a common axis and the initiation chain is ready for full activation, and an off-line position wherein the first segment is separated from the common axis by a distance such that activation of one segment of the initiation chain is insufficient to cause full activation;
a first barrier; and
a second barrier;
wherein the quick-arming excitation assembly is movable between a safe state, a stand-by state, and an armed state;
wherein the safe state of the quick-arming excitation assembly comprises the slider in the off-line position and the first and second barriers positioned on the path such that movement of the slider into the on-line position is blocked by the first and second barriers;
wherein the stand-by state of the quick-arming excitation assembly comprises the slider in the off-line position, the first barrier outside of the path, the second barrier in the path such that movement of the slider into the on-line position is blocked by the second barrier;
wherein the armed state of the quick-arming excitation assembly comprises the slider in the on-line position, the first barrier outside of the path;
wherein the quick-arming excitation assembly is reversibly movable between the safe state and the stand-by state; and
wherein the quick-arming excitation assembly can be irreversibly driven from the stand-by state to the armed state once.

2. The quick-arming excitation assembly of claim 1 , wherein the second barrier is a shear pin, and wherein moving from the stand-by state to the armed state comprises shearing the second barrier.

3. The quick-arming excitation assembly of claim 1 , further comprising a solenoid coupled to the first barrier, wherein the activation of the solenoid with an electric charge drives the assembly from the safe state to the stand-by state by moving the first barrier out of the path.

4. The quick-arming excitation assembly of claim 3 , further comprising a return spring coupled to the solenoid and biasing the assembly toward the safe state such that when the electric charge is removed the first barrier is driven back into the path by the return spring and the assembly is driven back into the safe state.

5. The quick-arming excitation assembly of claim 3 , wherein the solenoid is a rotary solenoid.

6. The quick-arming excitation assembly of claim 1 , further comprising a pyrotechnic thrust unit that is electrically powered and positioned along the path and configured to thrust the slider from the off-line position to the on-line position and irreversibly drive the assembly from the stand-by state to the armed state.

7. The quick-arming excitation assembly of claim 6 , wherein the armed state further comprises a front end of the slider deformed and trapped inside a housing, maintaining the slider in the on-line position.

8. The quick-arming excitation assembly of claim 6 , wherein the pyrotechnic thrust unit is configured to irreversibly drive the assembly from the stand-by state to the armed state in less than 1 millisecond.

9. A quick-arming excitation assembly system, comprising:
a first sensor;
a second sensor;
at least one quick-arming excitation assembly, each comprising:
an initiation chain comprising a first segment and at least one additional segment;
a slider comprising the first segment of the initiation chain and movable along a path, the slider movable between an on-line position wherein the first segment is aligned with the at least one additional segment along a common axis and the initiation chain is ready for full activation, and an off-line position wherein the first segment is separated from the common axis by a distance such that activation of one segment of the initiation chain is insufficient to cause full activation;
a first barrier; and
a second barrier;

and a central control communicatively coupled to the first sensor, the second sensor, and the at least one quick-arming excitation assembly;
wherein each of the at least one quick-arming excitation assembly is movable between a safe state, a stand-by state, and an armed state;
wherein the safe state of each quick-arming excitation assembly comprises the slider in the off-line position and the first and second barriers positioned on the path such that movement of the slider into the on-line position is blocked by the first and second barriers;
wherein the stand-by state of each quick-arming excitation assembly comprises the slider in the off-line position, the first barrier outside of the path, the second barrier in the path such that movement of the slider into the on-line position is blocked by the second barrier;
wherein the armed state of each quick-arming excitation assembly comprises the slider in the on-line position, the first barrier outside of the path;
wherein each quick-arming excitation assembly is reversibly movable between the safe state and the stand-by state; and
wherein the quick-arming excitation assembly can be irreversibly driven from the stand-by state to the armed state once.

10. The quick-arming excitation assembly system of claim 9 , wherein the first sensor is a long range sensor, and the second sensor is a short range sensor having a range shorter than the first sensor.

11. The quick-arming excitation assembly system of claim 10 , wherein the first sensor is radar, and the second sensor is an array of photoelectric cells.

12. The quick-arming excitation assembly system of claim 10 , wherein at least one of the at least one quick-arming excitation assembly is driven from the safe state to the stand-by state by the central control in response to the reception of a first signal from the first sensor, and further driven from the stand-by state to the armed state in response to the reception of a second signal from the second sensor after the reception of the first signal from the first sensor.

13. The quick-arming excitation assembly system of claim 10 , further comprising a capacitor communicatively coupled to the thrust unit of each of the at least one assembly, through the central control, wherein the central control begins charging the capacitor in response to the receipt of a first signal from the first sensor, and wherein at least one thrust unit is activated by the capacitor in response to the receipt of a second signal from the second sensor.

14. The quick-arming excitation assembly system of claim 9 , wherein, for each of the at least one assembly, the second barrier is a shear pin, and wherein moving from the stand-by state to the armed state comprises shearing the second barrier.

15. The quick-arming excitation assembly system of claim 14 , each of the at least one assembly further comprising a return spring coupled to the solenoid and biasing the assembly toward the safe state such that when the electric charge is removed the first barrier is driven back into the path by the return spring and the assembly is driven back into the safe state.

16. The quick-arming excitation assembly system of claim 14 wherein, for each of the at least one assembly, the solenoid is a rotary solenoid.

17. The quick-arming excitation assembly system of claim 9 , each of the at least one assembly further comprising a solenoid coupled to the first barrier, wherein the activati

Assignees

• Rafael Advanced Defense Systems Ltd
• Farael Advanced Defense Systems Ltd

Inventors

• Tamar Michael
• Levi Avraham
• Vainshtein Lavi

Classifications

• F42C15/40 Primary

  wherein the safety or arming action is effected electrically · CPC title

• F42C15/00

  Arming-means in fuzes; Safety means for preventing premature detonation of fuzes or charges · CPC title

• F41H11/00 Primary

  Defence installations; Defence devices (constructional aspects see Section E, e.g. {air-raid shelters} E04H9/04; {protective arrangements for buildings E04B1/92; extinguishing or preventing the spread of fire from, incendiary bombs A62C3/06; dynamic armour F41H5/007; ballistically deployed systems for restraining persons or animals F41H13/0006; electronic countermeasures G01S}) · CPC title

• F41H7/00

  Armoured or armed vehicles (general vehicle aspects B60; armoured or armed ships B63G; armoured or armed aircraft B64D; mounting guns, e.g. machine guns, on vehicles F41A23/00) · CPC title

• F41H5/00

  Armour; Armour plates (processes for manufacturing or treating B21, C21, {heat treatment C21D9/42; wall or panel structure for safes E05G1/024}) · CPC title