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

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$729,937.00
Award Year:
2007
Program:
SBIR
Phase:
Phase II
Contract:
W911QY-07-C-0103
Award Id:
77390
Agency Tracking Number:
A062-182-0035
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
2572 White Road, Irvine, CA, 92614
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
188465819
Principal Investigator:
Tom Jenkins
Senior Scientist
(949) 553-0688
tjenkins@metrolaserinc.com
Business Contact:
Cecil Hess
President
(949) 553-0688
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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