Eric D Erickson

US Patent:

61019577, Aug 15, 2000

Filed:

Jun 11, 1999

Appl. No.:

9/330210

Inventors:

Kenneth J. Wilson - Ridgecrest CA
Eric D. Erickson - Ridgecrest CA
Klaus C. Schadow - Ridgecrest CA

Assignee:

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

International Classification:

F23G 700
B05B 704
B63H 2546

US Classification:

110237

Abstract:

An apparatus for the disposal of solid rocket motors which produce exhaust ases containing flammable and/or explosive products. The solid rocket motor to be burned is first detachably connected to and inserted in one end of an elongated mixing chamber which has, at an opposite end, a multi-step expansion nozzle. The rocket motor is then ignited and the exhaust gas is passed into the mixing chamber, which is sufficiently large to reduce the velocity of exhaust gases from supersonic to subsonic. Air is injected into the mixing chamber to react with flammable and/or explosive products in the exhaust gases and the resultant mixture is then discharged from the mixing chamber through a multi-step expansion nozzle to expand the gaseous mixture and, at the same time, produce substantial turbulence within the gas mixture which is about six times higher than the turbulence levels produced by a constant area circular nozzle. The expansion nozzle has an inner wall with a stair-step shaped surface, having an aspect ratio of not less than 2 and not greater than 10, to create the increased turbulence levels within the multistep nozzle.

US Patent:

44965206, Jan 29, 1985

Filed:

May 20, 1982

Appl. No.:

6/380321

Inventors:

Carl A. Heller - China Lake CA
Eric D. Erickson - China Lake CA
Sterling R. Greni - Newport RI

Assignee:

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

International Classification:

G01N 3318
G01N 3322

US Classification:

422 60

Abstract:

A method and a device for the detection of trinitrotoluene (TNT) in efflu water from the purification apparatus of ammunition plants is described. The tube detector utilizes a basic oxide section to convert the TNT to its Meisenheimer anions, followed by an alkyl quaternary ammonium chloride ion-exchange resin which collects the colored anions. The length of the resultant stain is proportional to the concentration of TNT in the water.