Planar Doppler Velocimetry System for High-Speed Flows

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-05-M-3533
Agency Tracking Number: F051-242-0104
Amount: $99,990.00
Phase: Phase I
Program: SBIR
Awards Year: 2005
Solicitation Year: 2005
Solicitation Topic Code: AF05-242
Solicitation Number: 2005.1
Small Business Information
2572 White Road, Irvine, CA, 92614
DUNS: 188465819
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Thomas Jenkins
 Senior Scientist
 (949) 553-0688
Business Contact
 Cecil Hess
Title: President
Phone: (949) 553-0688
Research Institution
This is a proposal to develop a Planar Doppler Velocimetry (PDV) system for acquiring spatially- and temporally-resolved, three-component, velocity measurements around U.S. Air Force wind tunnel models, such as turrets and cavities, that have limited optical access. PDV is uniquely suited to flows in the transonic and supersonic regimes since the Doppler frequency shifts at these velocities are large and therefore easily measured. In addition, seed particles for the PDV technique can be small since they don¡¦t have to be individually resolved, so that light from a laser sheet placed in the field of interest is scattered relatively uniformly in all directions. Consequently, the imaging cameras can be placed anywhere within a wide range of possible locations, making this technique ideally suited for analyzing flow fields around such models. The proposed system would provide instantaneous planar velocity fields that include all three components. Each image may be acquired using either a conventional pulsed Nd:YAG laser to provide a large number of pulses for a statistically significant data set, or by using an optional burst-mode laser that will provide about 30 consecutive pulses at 4 ƒYs intervals for time resolved measurements.

* Information listed above is at the time of submission. *

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