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Passive Wireless Vibration Sensing for Measuring Aerospace Structural FlutterTo reduce energy consumption, emissions, and noise, NASA is exploring the use of high aspect ratio wings on subsonic aircraft. Because high aspect ratio wings are susceptible to flutter events, NASA is also investigating methods of flutter detection and suppression. In support of that work a new remote, non-contact method for measuring flutter-induced vibrations has been developed. The new sensing scheme utilizes a microwave reflectometer to monitor the reflected response from an aeroelastic structure to ultimately characterize structural vibrations. To demonstrate the ability of microwaves to detect flutter vibrations, a carbon fiber-reinforced polymer (CFRP) composite panel was vibrated at various frequencies from 1Hz to 130Hz. The reflectometer response was found to closely resemble the sinusoidal response as measured with an accelerometer up to 100 Hz. The data presented demonstrate that microwaves can be used to measure flutter-induced aircraft vibrations.
Document ID
20170010142
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Wilson, William C. (NASA Langley Research Center Hampton, VA, United States)
Moore, Jason P. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
October 17, 2017
Publication Date
October 10, 2017
Subject Category
Electronics And Electrical Engineering
Report/Patent Number
NF1676L-27677
Meeting Information
Meeting: 2017 IEEE International Conference on Wireless for Space and Extreme Environments (WiSEE 2017)
Location: Montreal, Quebec
Country: Canada
Start Date: October 10, 2017
End Date: October 12, 2017
Sponsors: IEEE Canada
Funding Number(s)
WBS: WBS 081876.02.07.02.01.01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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