Planar Doppler Velocimetry for Large-Scale, Low-Speed Flows

Award Information
Agency: Department of Defense
Branch: Army
Contract: W911QY-07-C-0103
Agency Tracking Number: A062-182-0035
Amount: $729,937.00
Phase: Phase II
Program: SBIR
Awards Year: 2007
Solicitation Year: 2006
Solicitation Topic Code: A06-182
Solicitation Number: 2006.2
Small Business Information
METROLASER, INC.
2572 White Road, Irvine, CA, 92614
DUNS: 188465819
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Tom Jenkins
 Senior Scientist
 (949) 553-0688
 tjenkins@metrolaserinc.com
Business Contact
 Cecil Hess
Title: President
Phone: (949) 553-0688
Email: cecilh@metrolaserinc.com
Research Institution
N/A
Abstract
The proposed effort will extend the capabilities of Planar Doppler Velocimetry (PDV) to enable measurement of flow fields 7 ft. x 7 ft. in area with a velocity resolution of 1 ft/s, providing a solution to the experimental characterization of large flow fields near parachute canopies and their wakes. The predicted improvements in velocity resolution come from increased well depths of state-of-the-art CCD cameras, which enable a greater range of photonic signal levels with an associated increase in signal-to-noise ratio, and from the use of continuous-wave (cw) lasers that allow signal averaging to eliminate speckle noise. PDV is ideally suited to large flow fields, since the technique does not require individual seed particles to be resolved, so the observation ranges are limited only by the signal levels obtained. Commercially available high-power, single-mode cw lasers now provide large enough signals for the extended ranges needed to cover large flow fields. Investigations during the Phase I effort have demonstrated that the desired velocity resolution should be achievable in a full-scale prototype.

* information listed above is at the time of submission.

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