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HIGH TEMPERATURE IGNITION OF COATED BORON PARTICLES IN A SHOCK TUBE

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
15514
Program Year/Program:
1991 / SBIR
Agency Tracking Number:
15514
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Physical Sciences Inc.
20 New England Business Center Andover, MA 01810-
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1991
Title: HIGH TEMPERATURE IGNITION OF COATED BORON PARTICLES IN A SHOCK TUBE
Agency / Branch: DOD / NAVY
Contract: N/A
Award Amount: $57,077.00
 

Abstract:

IN ADVANCED PROPELLANT APPLICATIONS, THE IGNITION OF BORON PARTICLES IS INHIBITED BY THE BUILD UP OF A NON-VOLATILE BORON OXIDE LAYER ONTHE OUTER SURFACES. TECHNIQUES ARE CURRENTLY BEING DEVELOPED TO PREPARE BORON PARTICLES COATED WITH HIGH BURNING RATE METALS, IN THE EXPECTATION THAT SUCH COATINGS WILL SIGNIFICANTLY ACCELERATE THE IGNITIONAND BURNING OF THE BORON FUEL AND THUS ENHANCE ITS OVERALL COMBUSTION EFFICIENCY. IN ORDER TO EXAMINE SYSTEMATICALLY THE IGNITION BEHAVIOR OF COATED AND UNCOATED BORON PARTICLES, PHYSICAL SCIENCES INC (PSI)PROPOSES TO MEASURE IGNITION DELAYS AND BURNING RATES OF COATED AND UNCOATED BORON PARTICLES BEHIND REFLECTED SHOCK WAVES IN A SHOCK TUBE. A PREVIOUSLY DEVELOPED, NOVEL RADIAL PARTICLE INJECTOR WILL PROVIDEUNIFORM, DILUTE CLOUDS OF PARTICLES IN AR AND AR/O2 BATHS, WHICH WILL BE RAPIDLY HEATED TO SELECTED COMBUSTION TEMPERATURES (1800 TO 3000K) BY REFLECTED SHOCK WAVES. A VARIETY OF STATE-OF-THE-ART OPTICAL EXTINCTION AND SPECTRAL EMISSION DIAGNOSTICS, AT VISIBLE AND INFRARED WAVELENGTHS, WILL BE USED TO MONITOR THE TIME-RESOLVED KINETIC BEHAVIOR OF PARTICLES AND KEY GAS-PHASE COMBUSTION SPECIES SUCH AS BO AD BO2. THE RESULTS OF THE PHASE I EFFORT WILL BE DETERMINATIONS OF THE COMPARATIVE IGNITION BEHAVIOR FOR A LIMITED SELECTION OF COATED AND UNCOATED BORON PARTICLES, AND DEFINITION OF MORE COMPREHENSIVE PHASE II INVESTIGATIONS OF COATED BORON COMBUSTION PHENOMENA.

Principal Investigator:

W T Rawlins
Principal Investigator
5086890003

Business Contact:

Small Business Information at Submission:

Physical Sciences Inc
20 New England Business Center Andover, MA 01810

EIN/Tax ID:
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No