MEASUREMENTS

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$49,896.00
Award Year:
1985
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Agency Tracking Number:
2845
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Spectron Development
3303 Harbor Blvd #g3, Costa Mesa, CA, 92626
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
DR DARIUSH MODARRESS
PRINCIPAL INVESTIGATOR
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
THE PROBING OF BOUNDARY LAYERS, WAKES, AND SEPARATED FLOWS WITH PHYSICAL PROBES ALMOST ALWAYS LEADS TO QUESTIONABLE RESULTS BECAUSE OF THE INTERFERENCE WITH THE FLOW. APPLICATION OF NONINTRUSIVE OPTICAL PROBES TO MAKE SUCH MEASUREMENTS HAS LED TO IMPORTANT NEW INSIGHTS IN AERODYANMIC FLOWS. RECENT DEVELOPMENTS IN ULTRA HIGH SENSITIVITY INTERFEROMETRY HAVE PRODUCED TECHNIQUES FOR DETECTING BOUNDARY LAYER TRANSITION FROM LAMINAR TO TURBULENT FLOW. EXPERIMENTS SUGGEST THAT SUCH A DEVICE COULD ACTUALLY BE CONFIGURED AND CALIBRATED TO PRODUCE QUANTITATIVE DENSITY INFORMATION COMPARABLE TO HOT WIRE DATA. IT IS PROPOSED TO PERFORM BREADBOARD EXPERIMENTS TO CONFIRM THIS HYPOTHESIS AND TO PROVIDE DESIGN INFORMATION FOR A SYSTEM TO BE APPLIED IN A SELECTED WIND TUNNEL.

* information listed above is at the time of submission.

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