System and method for safing and arming a bore-launched projectile

a technology of projectile and safing device, which is applied in the direction of weapon components, ammunition fuzes, weapons, etc., can solve the problems of low acceleration force, low-g munitions present problems for conventional sa devices, and conventional sa devices do not utilize electronic safety back-up systems that are capabl

Inactive Publication Date: 2008-03-27
CHANG IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]Various embodiments presented herein provide technical solutions to many of the problems inherent in conventional SA devices while providing robust and, in some cases, multiple independent safeguards agains...

Problems solved by technology

However, there exists a growing class of munitions that do not produce spin upon gun launch and that experience relatively low acceleration forces (i.e. low-g acceleration) during launch.
Such no-spin, low-g munitions present problems for conventional SA devices since the magnitude of a launch acceleration force is typically lower than that resulting from an accidental drop of the projec...

Method used

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  • System and method for safing and arming a bore-launched projectile
  • System and method for safing and arming a bore-launched projectile
  • System and method for safing and arming a bore-launched projectile

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Embodiment Construction

[0034]Various embodiments of a system and associated method for safing and arming a bore-launched projectile now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments are shown. Indeed, system and method may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. Like numbers refer to like elements throughout.

[0035]While the various system 1 and method embodiments of the present invention are described in the context of a safing and arming system 1 having a rotatable arming switch 10 (see FIGS. 4A-4D, for example), it should be understood that the various SA system 1 and method embodiments described herein may also be applied to a linearly slidable arming switch (not shown) wherein at least one of the first acceleration safety device 30, the second acce...

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Abstract

A safing and arming (SA) system and method for a bore-launched projectile is provided. The SA system includes an arming switch, including a detonator, movable from a first position to a second position. When the arming switch is in the first position, the detonator is separated from an explosive train of the projectile. When the arming switch is in the second position, the detonator is substantially aligned with the explosive train, allowing the projectile to be armed. Safing systems are provided for retaining the arming switch in the first (safe) position. Various embodiments also allow for release of the arming switch so as to allow the arming switch to be moved to the second (armed) position, wherein the release may be triggered by a selected acceleration force exerted on the projectile and/or a determination that the projectile has been launched from the launch bore.

Description

FIELD OF THE INVENTION[0001]Various embodiments of the present invention relate generally to a system and method for safing and arming a bore-launched projectile so as to prevent unintended arming of the projectile.BACKGROUND OF THE INVENTION[0002]Munitions (such as explosive projectiles) are often provided with a safing and arming (“SA”) device that is designed to allow the projectile to arm its explosive train (and consequently, in some cases, the warhead carried by the projectile) only after the projectile has undergone an intentional launch event. For example, all munitions qualified by the United States government must comply with the requirements of U.S. Department of Defense (“DOD”) MIL-STD-1316, entitled “Safety Criteria for Fuze Design,” which sets forth specific guidelines and requirements for the design of an acceptable SA device. For example, MIL-STD-1316 specifies that an acceptable SA device must sense two independent arming environments prior to arming.[0003]Conventio...

Claims

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Application Information

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IPC IPC(8): F42C15/24
CPCF42C15/24F42C15/192
Inventor SIGLER, JOHN WILLIAMMANDICH, JOHN PHILIP
Owner CHANG IND INC
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