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

Award Information
Agency:
Department of Defense
Branch
Army
Amount:
$69,974.00
Award Year:
2006
Program:
SBIR
Phase:
Phase I
Contract:
W911QY-07-C-0014
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
METROLASER, INC. (Currently METROLASER, INCORPORATED)
2572 White Road, Irvine, CA, 92614
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
188465819
Principal Investigator:
Thomas 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 include flow fields 7 ft x 7 ft 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 mainly from increased well depths of state-of-the-art CCD cameras, which enable greater photonic signal levels with an associated increase in signal-to-noise ratio. Since the use of pulsed lasers has been found to result in unacceptable speckle noise in low speed applications, the use of continuous wave lasers is proposed, which should effectively 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. Several high-power, single-mode CW lasers are now available commercially that can provide large enough signals for the extended ranges needed to cover large flow fields. Investigations during Phase I will focus on refining and verifying the predictions made in this proposal of extended velocity resolution and observation range.

* information listed above is at the time of submission.

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