A NONINTRUSIVE DIAGNOSITC FOR WATER VAPOR IN HIGH TEMPERATURE FLOW FIELDS

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$49,992.00
Award Year:
1989
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
10183
Agency Tracking Number:
10183
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
1570 Pacheco St - Ste E-11, Santa Fe, NM, 87501
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Dr Alan C Stanton
(505) 984-1322
Business Contact:
() -
Research Institute:
n/a
Abstract
A FAST-RESPONSE METHOD FOR MEASUREMENT OF WATER VAPOR CONCENTRATIONS IN HIGH TEMPERATURE FLOWS IS NEEDED FOR RESEARCH ON HYPERSONI AIRBREATHING ENGINES AS WELL AS OTHER APPLICATIONS IN COMBUSTION RESEARCH OR CONTROL. THE PROPOSED INNOVATION WILL UTILIZE INEXPENSIVE ROOM TEMPERATURE LASER DIODES TO MEASURE ABSORPTION BY WATER VAPOR AT NEAR-INFRARED WAVELENGTHS. THESE LASERS WILL BE USED IN COMBINATION WITH HIGH FREQUENCY DETECTION TECHNIQUES TO DEVELOP A WATER VAPOR DIAGNOSTIC WITH HIGH SENSITIVITY, WIDE DYNAMIC RANGE, AND THE CAPABILITY FOR EXTREMELY FAST TIME RESPONSE. THE DIAGNOSTIC COULD ALSO BE USED FOR MEASUREMENT OF TEMPERATURE AND FLOW VELOCITY IN HYPERSONIC FLOWS. AN IMPORTANT CHARACTERISTIC OF THIS INNOVATION IS THAT THE MEASUREMENTS ARE NONINTRUSIVE. IN COMPARISON WITH OTHER POTENTIAL OPTICALLY-BASED METHODS FOR MEASURING WATER VAPOR CONCENTRATIONS, THE PROPOSED APPROACH USES EXCEPTIONALLY RELIABLE AND INEXPENSIVE LASER SOURCES WHICH CAN READILY BE COMBINED WITH FIBER OPTICS FOR MULTI-POINTING MONITORING. THE FEASIBILITY OF THE TECHNIQUE WILL BE DEMONSTRATED IN PHASE I BY MEASURMENTS IN A ROOM TEMPERATURE ABSORPTION CELL AND IN THE POST-FLAME GASES OF A METHANE-AIR FLAME.

* information listed above is at the time of submission.

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