V-22 Three-Dimensional (3D) Downwash Measurement

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-09-C-0254
Agency Tracking Number: N091-029-1217
Amount: $80,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2009
Solicitation Year: 2009
Solicitation Topic Code: N091-029
Solicitation Number: 2009.1
Small Business Information
1570 Pacheco Street, Suite E-11, Santa Fe, NM, 87505
DUNS: 153579891
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 David Hovde
 Principal Research Scient
 (513) 272-1323
Business Contact
 Alan Stanton
Title: Principal Research Scient
Phone: (505) 984-1322
Email: astanton@swsciences.com
Research Institution
The Navy requires measurements of the wake field of helicopters in the vicinity of carrier ships to determine the safe operating envelope for the V-22 and to verify the accuracy of models obtained by computational fluid dynamics. This Phase I SBIR project will examine the feasibility of a laser-based remote sensing technique for recording three dimensional wind fields with high spatial and temporal resolution. A laser beam shines across the flight deck, where some of the light scatters from aerosol particles in the air to a group of at least three optical detectors placed around the measurement region. The motion of the particles encodes information about the wind velocity as a change in frequency of the scattered light. An innovative optical filter converts the frequency information into a signal that is proportional to velocity. The optical filter is simple, inexpensive, and has a wide acceptance angle, permitting the use of fast optics to collect the most light possible. The high signal to noise ratio obtained by this technique allows measurements from stand-off distances of over twenty meters using low-power lasers. Other system features include low electrical power and compact transmitter and receiver assemblies that should facilitate onboard tests.

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

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government