Steven R Zelenak

US Patent:

7059249, Jun 13, 2006

Filed:

Jan 23, 2001

Appl. No.:

09/767542

Inventors:

Amir Chaboki - Minneapolis MN, US
Reed A. McPeak - Vadnais Heights MN, US
Michael R. Triviski - Oakdale MN, US
Steven R. Zelenak - Champlin MN, US

Assignee:

United Defense LP - Arlington VA

International Classification:

F42L 19/12

US Classification:

1022028, 1022027, 102202, 102472

Abstract:

A plasma injector for use in munitions having a central axis. The plasma injector has a stub case, a tube, an anode, a cathode, and a conductive wire. The tube has a first end, a second end, and a central bore extending therethrough. The tube has at least one aperture that is operably connected to the central bore. The tube is attached to the stub case substantially transverse to the central axis. The anode is positioned proximate the first end. The cathode is positioned proximate the second end. The conductive wire extends through the central bore between the anode and the cathode and operably connects the anode and the cathode.

US Patent:

58862900, Mar 23, 1999

Filed:

Jul 25, 1997

Appl. No.:

8/903258

Inventors:

John S. Lindblom - Crystal MN
Steven R. Zelenak - Champlin MN
Steven M. French - New Brighton MN
Mark E. Schneider - Vadnais Heights MN

Assignee:

United Defense, LP - Arlington VA

International Classification:

F42B 508

US Classification:

102530

Abstract:

This disclosure relates to a plasma generation device particularly adapted to an electrothermal-chemical propulsion system. The device comprises a membranous conductive substance having structural compositions which enable the formation of a continuous and volumetrically distributed, segmentally varied plasma arc. The membranous substance is versatile and operates, inter alia, as a fuse wire, plasma incubator, plasma container, plasma distributor, plasma infusion and permeation media as well as a fuel container.

US Patent:

57674396, Jun 16, 1998

Filed:

Jun 7, 1995

Appl. No.:

8/473156

Inventors:

John S. Lindblom - Crystal MN
Steven R. Zelenak - Champlin MN
Steven M. French - New Brighton MN
Mark E. Schneider - Vadnais Heights MN

Assignee:

United Defense LP - Arlington VA

International Classification:

F42B 508

US Classification:

102472

Abstract:

This disclosure relates to a plasma generation device particularly adapted to an electrothermal-chemical propulsion system. The device comprises a membranous conductive substance having structural compositions which enable the formation of a continuous and volumetrically distributed plasma arc. The membranous substance is versatile and operates, inter alia, as a fuse wire, plasma incubator, plasma container, plasma distributor, plasma infusion and permeation media as well as a fuel container.

US Patent:

52201260, Jun 15, 1993

Filed:

Aug 23, 1991

Appl. No.:

7/749040

Inventors:

Dennis Borgwarth - Anoka MN
Mark E. Schneider - Minneapolis MN
Steven R. Stricker - Brooklyn Center MN
Steven R. Zelenak - Maple Grove MN

Assignee:

FMC Corporation - Chicago IL

International Classification:

F41A 1969

US Classification:

89 2805

Abstract:

The apparatus and method disclosed herein relates to axially aligned electrical contacts which connect a high electrical power pulse forming network to an electrothermal ammunition integrated plasma injector in a combustion augmented plasma gun for launching projectiles thereof. The contacts transfer high energy, intermittent pulses without arcing because structure provides for axially preloading the contacts to reduce contact resistance, for axially stiffening the contacts to eliminate contact bounce and for providing complementary conical contact surfaces to facilitate a high current density transfer.

US Patent:

62094602, Apr 3, 2001

Filed:

Aug 9, 2000

Appl. No.:

9/634212

Inventors:

Brian J. Isle - Coon Rapids MN
Amir Chaboki - Minneapolis MN
Steven R. Zelenak - Champlin MN

Assignee:

United Defense, L.P. - Arlington VA

International Classification:

F42B 516

US Classification:

102443

Abstract:

The invention provides an improved propellant system for firing projectiles in large caliber guns. Strips of energetic propellant are placed in the cartridge case so that the lengths of the strips are parallel to the length of the cartridge. Preferably, the strips are placed in a radially symmetric pattern. The strips provide passageways that allow ignition gasses to flow radially in the cartridge case and along the length of the cartridge case.

US Patent:

55030815, Apr 2, 1996

Filed:

Nov 22, 1993

Appl. No.:

8/155675

Inventors:

John S. Lindblom - Crystal MN
Steven R. Zelenak - Champlin MN
Steven M. French - New Brighton MN
Mark E. Schneider - Vadnais Heights MN

Assignee:

FMC Corp - Chicago IL

International Classification:

F42B 508

US Classification:

102472

Abstract:

This disclosure relates to a plasma generation device particularly adapted to an electrothermal-chemical propulsion system. The device comprises a membranous conductive substance having structural compositions which enable the formation of a continuous and volumetrically distributed plasma arc. The membranous substance is versatile and operates, inter alia, as a fuse wire, plasma incubator, plasma container, plasma distributor, plasma infusion and permeation media as well as a fuel container.

US Patent:

61678104, Jan 2, 2001

Filed:

Dec 4, 1998

Appl. No.:

9/206085

Inventors:

Brian J. Isle - St. Francis MN
Gerald L. Dittmann - Woodbury MN
Amir Chaboki - Minneapolis MN
Steven R. Zelenak - Champlin MN
Timothy W. Petersen - Burnsville MN

Assignee:

United Defense, L.P. - Arlington VA

International Classification:

F42B 516

US Classification:

102443

Abstract:

The invention provides an improved propellant system for firing projectiles in large caliber guns. Strips of energetic propellant are placed in the cartridge case so that the lengths of the strips are parallel to the length of the cartridge. Preferably, the strips are placed in a radially symmetric pattern. The strips provide passageways that allow ignition gasses to flow radially in the cartridge case and along the length of the cartridge case.