Raymond J Allen

US Patent:

7809115, Oct 5, 2010

Filed:

Sep 9, 2008

Appl. No.:

12/207039

Inventors:

Raymond J Allen - Vienna VA, US
Gerald Cooperstein - Rockville MD, US
Joseph W Schumer - Falls Church VA, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

H01J 35/06
H01J 35/08
H01J 35/30

US Classification:

378136, 378137, 378138

Abstract:

A flash radiography diode includes a cathode and an anode. The cathode includes a frustum member with a bore extending through the frustum member. The anode is a tapered anode made of an electrically conductive material and oriented toward the cathode. The anode and the cathode are housed in a chamber with a gap between the anode and the cathode. The cathode is configured to emit electrons to the tapered anode, which electrons strike the anode and create an anode plasma. The anode plasma creates X rays which propagate from the anode.

US Patent:

8079352, Dec 20, 2011

Filed:

Jun 24, 2010

Appl. No.:

12/822826

Inventors:

Michael J. Veracka - Annapolis MD, US
Craig N. Boyer - Mitchellville MD, US
Jesse M. Neri - Gaithersburg MD, US
Raymond J Allen - Vienna VA, US
Irwin L. Singer - Alexandria VA, US

Assignee:

The United States of America as represented by the Secretary of the Navy - Washington DC

International Classification:

F41F 1/00

US Classification:

124 3, 89 8

Abstract:

An electromagnetic rail gun launcher for launching an armature attached to a projectile includes a barrel, having a bore, and a body that includes a pair of main rails, a first pair of augmenting rails one of each lying outboard of and coextending with each of one of the main rails from the breech to the muzzle, a second pair of augmenting rails one of each lying outboard of and coextending with one of each of the first pair of augmenting rails, a first pair of electrically-conducting crossovers proximate to the breech and a second pair of electrically-conducting crossovers proximate to the muzzle and connected in series when the armature is positioned in the bore with power provided to the launcher. The exit speed of the projectile from the launcher is controlled by controlling the current to the launcher.