VELOCIMETRY WITH REFRACTIVE-INDEX-MATCHING FOR COMPLEX FLOW CONFIGURATIONS

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$486,000.00
Award Year:
1988
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
5076
Agency Tracking Number:
5076
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
P.o. Box 498, Glastonbury, CT, 06033
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
DR. HENRY MCDONALD
INVESTIGATOR
() -
Research Institute:
n/a
Abstract
THERE IS AN OVERALL NEED FOR VELOCITY MEASUREMENTS IN A WIDE RANGE OF APPLICATIONS THAT HAVE COMPLEX GEOMETRY, SUCH AS IN VSTOL AIRCRAFT DUCTS, HEAT EXCHANGERS, PUMPS, MANIFOLDS AND ROCKET ENGINES. A VELOCITY MEASUREMENT TECHNIQUE WHICH USES LASER-DOPPLER ANEMOMETRY AND REFRACTIVE-INDEX-MATCHING OF THE FLUID AND MODEL MATERIALS WOULD BE DEVELOPED FOR COMPLEX FLOW CONFIGURATIONS SUCH AS MODELS OF THE SPACE SHUTTLE MAIN ENGINE. EMPHASIS IS PLACEDON THE SSME APPLICATION BECAUSE IT HAS THE COMPLEXITY REQUIRED TO PROVE THE SUITABILITY OF THIS APPROACH IN A WIDERANGE OF COMPLEX CONFIGURATIONS AND BECAUSE THE DETAILED MEASUREMENTS WOULD HAVE INTRINSIC VALUE IN THE IMPROVEMENT AND DESIGN OF SSME COMPONENTS. PLEXIGLASS MODELS WOULD BE USED WITH FLUIDS THAT ARE ARRANGED TO HAVE AN INDEX OF REFRACTION SIMILAR TO THAT OF PLEXIGLASS AND THE FLOW CHARACTERISTICS WOULD BE DETERMINED WITH A FORM OF LASER-DOPPLER VELOCIMETRY. REFRACTIVE-INDEX-MATCHING TECHNIQUES CAN BE USED TO MEASURE AT INTERNAL LOCATIONS WHERE LASER BEAMS PASS THROUGH SEVERAL INTERFACES AND AT LOCATIONS IN CLOSE PROXIMITY TO WALLS. THE PROPOSED EFFORT WOULD EXTEND PRESENT CAPABILITY TO MORE COMPLEX CONFIGURATIONS AND LARGER FLOW RATES.

* information listed above is at the time of submission.

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