Energy harvesting power sources for generating a time-out signal for unexploded munitions

a technology of energy harvesting power sources and unexploded munitions, applied in the direction of time fuzes, electric fuzes, ammunition fuzes, etc., can solve the problem of no reliable and simple mechanism for separating an accidental drop of a munition

Inactive Publication Date: 2007-09-06
OMNITEK PARTNERS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0019] If the output of the power supply has dropped below the predetermined th...

Problems solved by technology

Currently, there is no reliable and simple mechanism for differentiating an accidental drop of a mu...

Method used

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  • Energy harvesting power sources for generating a time-out signal for unexploded munitions
  • Energy harvesting power sources for generating a time-out signal for unexploded munitions
  • Energy harvesting power sources for generating a time-out signal for unexploded munitions

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Embodiment Construction

[0026] In the methods and apparatus disclosed herein, the spring end of a mass-spring unit is attached to a housing (support) unit via one or more piezoelectric elements, which are positioned between the spring end of the mass-spring and the housing unit. A housing is intended to mean a support structure, which partially or fully encloses the mass-spring and piezoelectric elements. On the other hand, a support unit may be positioned interior to the mass-spring and / or the piezoelectric elements or be a frame structure that is positioned interior and / or exterior to the mass-spring and / or piezoelectric elements. The assembly is provided with the means to preload the piezoelectric element in compression such that during the operation of the power generation unit, tensile stressing of the piezoelectric element is substantially avoided. The entire assembly is in turn attached to the base structure (e.g., gun-fired munitions). When used in applications that subject the power generation uni...

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Abstract

A method is provided for detecting a target impact of a munition. The method including: providing the munition with a power supply having a piezoelectric material for generating power from a vibration induced by the munition; monitoring an output from the power supply; and determining whether the output of power from the power supply has dropped below a predetermined threshold.

Description

CROSS-REFERENCE TO RELATED APPLICATION [0001] This application claims priority to earlier filed U.S. provisional application Ser. No. 60 / 759,606 filed on Jan. 17, 2006, the entire contents of which is incorporated herein by its reference. The electrical energy harvesting power sources disclosed herein are described in detail in U.S. patent application Ser. Nos. 10 / 235,997 and 11 / 116,093, each of which are incorporated herein by their reference.GOVERNMENTAL RIGHTS [0002] This invention was made with Government support under Contract No. DAAE30-03-C1077, awarded by the U.S. Army. The Government may have certain rights in this invention.BACKGROUND OF THE INVENTION [0003] 1. Field of the Invention [0004] The present invention relates generally to power supplies, and more particularly, to power supplies for projectiles, which generate power due to an acceleration of the projectile. [0005] 2. Prior Art [0006] Fuzing of munitions is necessary to initiate a firing of the munition. Currently...

Claims

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Application Information

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IPC IPC(8): F42C11/02
CPCD21F1/0027D21F7/083D21F7/086F42C11/02F42C9/00F42C15/44F42C9/02F42B33/06F42C15/40
Inventor RASTEGAR, JAHANGIR S.PEREIRA, CARLOS M.DRATLER, RICHARD
Owner OMNITEK PARTNERS LLC
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