NDLI: Control of fan blade vibrations using piezoelectrics and bi-directional telemetry

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Control of fan blade vibrations using piezoelectrics and bi-directional telemetry

Content Provider	NASA Technical Reports Server (NTRS)
Author	Provenza, Andrew J. Morrison, Carlos R.
Copyright Year	2011
Description	A novel wireless device which transfers supply power through induction to rotating operational amplifiers and transmits low voltage AC signals to and from a rotating body by way of radio telemetry has been successfully demonstrated in the NASA Glenn Research Center (GRC) Dynamic Spin Test Facility. In the demonstration described herein, a rotating operational amplifier provides controllable AC power to a piezoelectric patch epoxied to the surface of a rotating Ti plate. The amplitude and phase of the sinusoidal voltage command signal, transmitted wirelessly to the amplifier, was tuned to completely suppress the 3rd bending resonant vibration of the plate. The plate's 3rd bending resonance was excited using rotating magnetic bearing excitation while it spun at slow speed in a vacuum chamber. A second patch on the opposite side of the plate was used as a sensor. This paper discusses the characteristics of this novel device, the details of a spin test, results from a preliminary demonstration, and future plans.
File Size	2215612
Page Count	14
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20110013368
Archival Resource Key	ark:/13960/t6qz7761b
Language	English
Publisher Date	2011-06-01
Access Restriction	Open
Subject Keyword	Aircraft Propulsion And Power Operational Amplifiers Test Facilities Vibration Vibration Damping Vacuum Chambers Piezoelectric Actuators Piezoelectricity Magnetic Bearings Telemetry Fan Blades Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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