A flutter suppression system using strain gages applied to Active Flexible Wing Technology - Design and test

Design and benchmarking of a low-cost shape sensing spar for in situ measurement of deflections in slender lifting surfaces in complex multiphase flows

“…Marine hydroelasticity can also benefit from robust and accurate observations of a structure's shape to enable or inform improved control strategies. Active control, for example, can be used to mitigate the onset of hydroelastic instabilities through in situ monitoring of vibratory modes; similar approaches have been explored in the field of aeroelastic control [10] using accelerometers [11] and strain-based measurements of bending moments [12]. Monitoring of performance and structural health is also useful for both the design and operation of passive control in hydroelasticallytailored lifting surfaces [13].…”

Surface acoustic wave vibration sensors for measuring aircraft flutter

“…Vibration measurement systems can be used to monitor flutter and are also important for structural health monitoring because they can be used to detect structural damage and provide useful data in the localization and characterization of structural damage [5]. Traditionally, strain gauges [6,7] and accelerometers [8] have been used to measure flutter on aircraft while more recent research has explored the use of microelectromechanical systems (MEMS) [9], PZT sensors [10][11][12], artificial hair from CNT [13], and fiber optic strain sensors [14,15] in vibration and load monitoring applications. SAW devices are now being investigated for flutter applications because they are small, lightweight, low power, and can be deployed in a minimal-wiring daisy-chained layout.…”