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PROBE FOR FLUCTUATING TEMPERATURE MEASUREMENTS IN TURBULENT SUPERSONIC FLOWS

Award Information

Agency:
Department of Defense
Branch:
Army
Award ID:
15788
Program Year/Program:
1991 / SBIR
Agency Tracking Number:
15788
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Aspen Systems, Inc.
184 Cedar Hill Street Marlborough, MA 01752-3017
View profile »
Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1991
Title: PROBE FOR FLUCTUATING TEMPERATURE MEASUREMENTS IN TURBULENT SUPERSONIC FLOWS
Agency / Branch: DOD / ARMY
Contract: N/A
Award Amount: $50,000.00
 

Abstract:

AN INNOVATIVE COHERENT OPTICAL MEASUREMENT METHOD TO DIAGNOSE HIGH FREQUENCY FLUCTUATING COMPONENTS IN A HIGH MACH NUMBER FLOW IS PROPOSED. THE SPECIES CONCENTRATION, STATIC AND STAGNATION TEMPERATURE OF THE GAS MIXTURE, WILL BE MEASURED DIRECTLY AND SIMULTANEOUSLY DURING A SINGLE LASER PULSE, DURING ABOUT 10 NSEC. THIS MAKES THE MEASUREMENT COMPATIBLE WITH HIGH FREQUENCY TURBULENT REGIMES. THE PRESSURE (STATIC AND STAGNATION) AS WELL AS THE VELOCITY WILL BE DETERMINED BY THE MEASURED DATA. OTHER ATTRACTIVE AND UNIQUE PROPERTIES OF THE PROPOSED APPARATUS INCLUDE A SPATIAL RESOLUTION OF ABOUT 10 MICRONS, AND A MEASUREMENT SENSITIVITY EQUIVALENT TO A PARTIAL PRESSURE OF LESS THAN 1 MILLITORR OF MOLECULAR NITROGEN. THE PROPOSED SYSTEM OPERATES BY A NOVEL COHERENT SCATTERING METHOD, THAT PROVIDES CONSIDERABLE ADVANTAGES OVER EXISTING SCATTERING TECHNIQUES. THE MULTIPLE MEASUREMENT USING A SINGLE APPARATUS IS POSIBLE DUE TO THE TUNABILITY OF THE COHERENT SOURCE AS WELL AS THE CONVOLUTED INFORMATION OBTAINED IN THE OUTPUT SIGNAL. THE PROPOSED LABORATORY SETUP WILL INCLUDE A NOVEL SINGLE LASER INVENTED BY THE PRINCIPAL INVESTIGATOR, SO THAT NO ADDITIONAL COHERENT RADIATION SOURCES ARE NECESSARY.

Principal Investigator:

Dr Michael M Tilleman
Principal Investigator
5084815058

Business Contact:

Small Business Information at Submission:

Aspen Systems Inc
184 Cedar Hill St Marlborough, MA 01752

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