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VELOCITY MEASUREMENTS IN HIGH TEMPERATURE GASES USING NO FLUORESCENCE

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 12837
Amount: $490,162.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1991
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
20 New England Business Ctr
Andover, MA 01810
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Mark Allen
 (508) 689-0003
Business Contact
Phone: () -
Research Institution
N/A
Abstract

THIS PHASE I PROPOSAL DESCRIBES AN INNOVATIVE APPROACH TO NON-INTRUSIVE VELOCITY MEASUREMENT IN SUPERSONIC FLOWFIELDS BASED ON THE DOPPLER-SHIFTED FLUORESCENCE OF THE NO MOLECULE. A SUCCESSFUL DEMONSTRATION OF THIS CONCEPT WOULD REPRESENT A SIGNIFICANT ADVANCE IN BOTH NON-INTRUSIVE DIAGNOSTICS AND GENERAL PROPULSION INSTRUMENTATION. CURRENT VELOCITY MEASUREMENT TECHNIQUES, SUCH AS HOT-WIRE ANEMOMETRY (BASED ON THE CONVECTIVE COOLING OF A SMALL, HEATED WIRE IN THE FLOW) AND LASER-DOPPLER ANEMOMETRY (BASED ON THE DOPPLER-SHIFT OF LASER LIGHT SCATTERED FROM PARTICLES SEEDED INTO THE FLOW) ARE GENERALLY INAPPLICABLE, OR SUBJECT TO LARGE SYSTEMATIC ERRORS IN COMPRESSIBLE, HIGH-TEMPERATURE FLOWFIELDS. THE NO FLUORESCENCE APPROACH DESCRIBED IN THIS PROPOSAL FINDS PARTICULAR APPLICATION IN SUPERSONIC COMBUSTION RESEARCH WHERE MEASUREMENTS AT COMBUSTOR INLET AND EXHAUST ARE REQUIRED. FURTHERMORE, THE TECHNIQUE IS CONCEPTUALLY AMENABLE FOR EXTENSION TO SIMULTANEOUS, MULTI-POINT MEASUREMENTS USING LASER SHEET ILLUMINATION AND FLUORESCENCE DETECTION VIA SENSITIVE, IMAGING DETECTOR ARRAYS.

* Information listed above is at the time of submission. *

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