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THIS INVESTIGATION IS AIMED AT DEVELOPING AN ACTIVE FLOW CONTROL DEVICE TO…

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
2792
Program Year/Program:
1985 / SBIR
Agency Tracking Number:
2792
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Flow Research Inc
21414 - 68th Avenue South Kent, WA 98032
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Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1985
Title: THIS INVESTIGATION IS AIMED AT DEVELOPING AN ACTIVE FLOW CONTROL DEVICE TO GENERATE LARGE-SCALE, PERIODIC STRUCTURES IN A TURBULENT SHEAR FLOW.
Agency: NASA
Contract: N/A
Award Amount: $50,000.00
 

Abstract:

THIS INVESTIGATION IS AIMED AT DEVELOPING AN ACTIVE FLOW CONTROL DEVICE TO GENERATE LARGE-SCALE, PERIODIC STRUCTURES IN A TURBULENT SHEAR FLOW. THE DEVICE WILL BE USED ON AIRBORNE LASER PLATFORMS TO REDUCE OR ELIMINATE OPTICAL DISTORTION OF THE LASER BEAM CAUSED BY THE TURBULENCE. CONTROLLED EXPERIMENTS WILL BE CONDUCTED IN AN 18-METER TOWING TANK TO INVESTIGATE THE FEASIBILITY OF GENERATING LARGE-SCALE, PERIODIC STRUCTURES IN A HIGHLY TURBULENT FLOW FIELD. TWO METHODS ARE PROPOSED FOR ALTERING THE TURBULENCESTRUCTURE. THE FIRST IS THE USE OF A CONTROLLED CYCLIC JET ISSUING FROM THE WALL OF A BOUNDARY LAYER TO COLLECT THE TURBULENCE FOR A FINITE TIME AND THE RELEASE ALL OF THE ENERGY INSTANTANEOUSLY IN ONE LARGE EDDY THAT CONVECTS DOWNSTREAM. THE SECOND METHOD INVOLVES A TURRET-LIKE DEVICETO DIVERT THE AIRPLANE'S BOUNDARY LAYER AWAY FROM THE PATH OF THE LASER BEAM. THE RESULTING FREE SHEAR LAYER WILL THENBE ACTIVELY CONTROLLED BY SUBHARMONIC PERTURBATION. BOTH DEVICES WILL BE TESTED AND OPTIMIZED ON A ZERO PRESSURE-GRADIENT BOUNDARY LAYER USING NOVEL FLOW VISUALIZATION TECHNIQUES AND FAST-RESPONSE VELOCITY PROBE MEASUREMENTS. CONDITIONAL SAMPLING AND PATTERN RECOGNITION TECHNIQUES WILL BE USED TO ANALYZE THE RANDOM VELOCITY SIGNAL.

Principal Investigator:

Dr mohamed gad-el-hak
PRINCIPAL INVESTIGATOR

Business Contact:

Small Business Information at Submission:

Flow Industries Inc
2141 68th Ave S Kent, WA 98032

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