Wind Tunnel Active Vibration Reduction System (WTAVRS)

Award Information
Agency:
Department of Defense
Branch
Air Force
Amount:
$99,874.00
Award Year:
2005
Program:
SBIR
Phase:
Phase I
Contract:
FA9101-05-M-0032
Award Id:
73295
Agency Tracking Number:
F051-297-1394
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
30 Research Drive, Hampton, VA, 23666
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
106283112
Principal Investigator:
Heather Houlden
Senior Research Engineer
(757) 865-1400
houlden@vigyan.com
Business Contact:
E. White
Vice President
(757) 865-1400
rwhite@vigyan.com
Research Institute:
n/a
Abstract
During wind tunnel testing of scaled aerodynamic models, the most critical measuring device is the internal strain gage balance. Modern internal balances are intricate and precise devices, which resolve the force moment data into Cartesian components accurately. While the accuracy of the balance system is extremely high, its design is inherently elastic and prone to vibrations. The model-balance-sting and arc sector constitute a typical wind tunnel support system. These are complex elastic systems prone to vibrations excited by the local turbulence. The model-balance-sting-support system has many complex modes of vibration with different modal frequencies and radii. They represent centrifugal inertial motion of the model and balance, which add to the static aerodynamic load of interest to the experimenter. Hence modal vibrations corrupt the quality of force-moment data in many ways. ViGYAN is proposing to develop a Wind Tunnel Active Vibration Reduction System (WTAVRS) that will be an actively controlled assembly of piezoelectric actuation devices that will work together to cancel the dynamic motions sensed at the end of the sting in order to reduce the vibrations affecting the strain gage balance measurements. The proposed device will be installed and tested in the ViGYAN wind tunnel facility.

* information listed above is at the time of submission.

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