Magnetorheological Fluids based Dampers for On-board Components in Spacecraft

Award Information
Agency:
Department of Defense
Amount:
$70,000.00
Program:
SBIR
Contract:
F29601-02-C-0201
Solitcitation Year:
N/A
Solicitation Number:
N/A
Branch:
Missile Defense Agency
Award Year:
2002
Phase:
Phase I
Agency Tracking Number:
02-0619
Solicitation Topic Code:
N/A
Small Business Information
Materials Modification, Inc.
2721-D Merrilee Drive, Fairfax, VA, 22031
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
167433531
Principal Investigator
 Raffi Sahul
 Materials Engineer
 (703) 560-1371
 raffi@matmod.com
Business Contact
 T.S. Sudarshan
Title: Vice-President & COO
Phone: (703) 560-1371
Email: sudarshan@matmod.com
Research Institution
N/A
Abstract
"Vibration control techniques for on-board components are very essential during high attitude, weight shift and acceleration in a spacecraft. Conventional mechanisms of damping such as hydraulic dampers and springs do not exhibit such high-speed responsesrequired by these applications. The other class of sensor-actuator controlled damping technique based on piezoelectricity with electronic sensor circuitry and piezoactuators require large power sources. Semi-active control devices based onMagnetorheological (MR) fluids have been widely recognized for vibration control systems. Current research interests are towards MR fluids synthesized using micron size magnetic particles, which are not very sensitive to the damping application.Materials Modification Inc (MMI) proposes to develop a low cost, high performance MR fluid based vibration control system for damping the structural vibrations of on-board components in spacecrafts. The MR fluids proposed for use in the damping systemshave nanomagnetic particles dispersed in them. The use of nanomagnetic particles as against the currently used micromagnetic particles will show a significant change in sensitivity, response time, stability and unsedimentation owing to better uniformmagnetization and low hysteresis. Phase I effort involves the fabrication of a simple MR fluid-based damper prototype. The damper characteristics will be experimentally determined to demonstrate the responsiveness of

* information listed above is at the time of submission.

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