Multi Point Velocity, Density and Temperature Measurements using LITA

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$70,000.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
NNL04AB16P
Agency Tracking Number:
035949
Solicitation Year:
2003
Solicitation Topic Code:
A2.06
Solicitation Number:
n/a
Small Business Information
Advanced Projects Research Inc
1925 MCKINLEY AVE SUITE, LA VERNE, CA, 91750-5800
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
Y
Duns:
19669
Principal Investigator:
Thomas Sobota
Principal Investigator
(909) 392-3151
thomas.sobota@advancedprojects.com
Business Contact:
Thomas Sobota
President
(909) 392-3155
thomas.sobota@advancedprojects.com
Research Institution:
n/a
Abstract
Laser induced thermal acoustics (LITA) is a nonintrusive, transient-grating optical technique that provides simultaneous high-accuracy measurements of velocity, sound-speed, and thermal diffusivity among other parameters. In a fluid of known composition, sound speed and thermal diffusivity are readily correlated to temperature and density. Thus LITA provides a measurement of thermodynamic state. We are developing a computer-controlled semi-portable LITA system for robust, long-baseline measurements. This novel system automatically adjusts its own alignment to optimize accuracy. In prior work, LITA velocimetry was incorporated into this system and demonstrated. System level requirements for multi point LITA measurements were identified and system components, which as a whole, meet these requirements were designed or identified. In the proposed effort, elements of the design will be separately validated and will then be incorporated into a complete system for delivery to NASA in Phase II. By providing velocimetry and multi point capability the proposed system will beideal for high-value ground-test experiments.

* information listed above is at the time of submission.

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