Ferrofluid Gyro
Abstract
The concept of using a ferrobluid rotating under the influence of an electromagnetic field as a gyroscope is reported. A ferrofluid is a colloidal suspension of ferromagnetic particles and behaves as a magnetic liquid. It was shown that up to about 100 dyne-cm/cc or torque can be transmitted at rates of about 5 KHz using a field strength of about 80 oersted. The direction of the torque was observed to be opposite to the rotation of the surface layer of the fluid, indicating a complex flow pattern in the interior. In a dynamic experiment a signal from a search coil surrounding the rotating ferrofluid was less than 2 microvolts/milliradian, when the system was subjected to angular rates of about 150 degrees/sec.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1971
- Accession Number
- AD0740875
Entities
People
- Gabor Miskolczy
- Rudolph Litte