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Title: Gas powered fluid gun with recoil mitigation

Abstract

A gas powered fluid gun for propelling a stream or slug of a fluid at high velocity toward a target. Recoil mitigation is provided by a cavitating venturi that reduces or eliminates the associated recoil forces, with minimal or no backwash. By launching a quantity of water in the opposite direction, net momentum forces are reduced or eliminated.

Inventors:
;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1338059
Patent Number(s):
9,534,879
Application Number:
15/004,666
Assignee:
Sandia Corporation (Albuquerque, NM) SNL-A
DOE Contract Number:
AC04-94AL85000
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Jan 22
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE

Citation Formats

Grubelich, Mark C., and Yonas, Gerold. Gas powered fluid gun with recoil mitigation. United States: N. p., 2017. Web.
Grubelich, Mark C., & Yonas, Gerold. Gas powered fluid gun with recoil mitigation. United States.
Grubelich, Mark C., and Yonas, Gerold. Tue . "Gas powered fluid gun with recoil mitigation". United States. doi:. https://www.osti.gov/servlets/purl/1338059.
@article{osti_1338059,
title = {Gas powered fluid gun with recoil mitigation},
author = {Grubelich, Mark C. and Yonas, Gerold},
abstractNote = {A gas powered fluid gun for propelling a stream or slug of a fluid at high velocity toward a target. Recoil mitigation is provided by a cavitating venturi that reduces or eliminates the associated recoil forces, with minimal or no backwash. By launching a quantity of water in the opposite direction, net momentum forces are reduced or eliminated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 03 00:00:00 EST 2017},
month = {Tue Jan 03 00:00:00 EST 2017}
}

Patent:

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  • A gas powered fluid gun for propelling a stream or slug of a fluid at high velocity toward a target. Recoil mitigation is provided that reduces or eliminates the associated recoil forces, with minimal or no backwash. By launching a quantity of water in the opposite direction, net momentum forces are reduced or eliminated. Examples of recoil mitigation devices include a cone for making a conical fluid sheet, a device forming multiple impinging streams of fluid, a cavitating venturi, one or more spinning vanes, or an annular tangential entry/exit.
  • A gas powered fluid gun for propelling a stream or slug of a fluid at high velocity toward a target. Recoil mitigation is provided that reduces or eliminates the associated recoil forces, with minimal or no backwash. By launching a quantity of water in the opposite direction, net momentum forces are reduced or eliminated. Examples of recoil mitigation devices include a cone for making a conical fluid sheet, a device forming multiple impinging streams of fluid, a cavitating venturi, one or more spinning vanes, or an annular tangential entry/exit.
  • This patent describes a hybrid coil gun. It comprises: a projectile formed with at least one closed-loop electromagnet winding; a piston formed with at least one closed-loop electromagnet winding; means defining at least one barrel receiving the projectile and from which the projectile can be electromagnetically propelled; coil means on the barrel having at least a portion magnetically coupling to the closed-loop winding of the projectile for magnetically propelling the projectile from the barrel. The coil means comprising a closed-loop portion generating an external field and magnetically coupling to the closed-loop winding of the piston to decelerate the piston andmore » generate by induction a current pulse for magnetically propelling the projectile; and means for applying a chemical propellant to the piston to drive the piston through the closed-loop portion of the coil means and the external field, whereby the current pulse is induced, the closed-loop portion generating an external field of axially tapering field strength.« less
  • The method is described of firing a well perforating gun having an impact detonatable primer at one end of a fluid pressure chamber and a hammer slidably and sealably mounted in the chamber and releasably secured in spaced relation to the primer. The method consists of: (1) providing fluid connection between opposite ends of the fluid pressure chamber and a source of pressured fluid; (2) trapping pressured fluid entering the end of the fluid pressure chamber remote from the primer charge; (3) reducing the pressure of the fluid pressure source to create an increasing fluid pressure differential on the hammermore » urging the hammer toward the primer; and (4) releasing the hammer to impact the primer when the fluid pressure differential acting on the hammer reaches a predetermined level.« less
  • A well perforating gun assembly includes a perforating gun secured to the bottom of a tubular actuating housing containing a fluid pressure actuated hammer and a fixedly mounted primer against which the firing means is impacted. A latch normally maintains the firing means in an elevated position with respect to the primer but such latch may be released through the application of sufficient fluid pressure force to the firing means to drive it into engagement with the primer. If the primer fails to ignite, a second fluid pressure force is employed to move the firing means to its original latchedmore » position, ready for a second application of fluid pressure to release the firing means and again impact the primer.« less