Perlan 2 Flutter Exciters

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Perlan 2 has built in Flutter Exciters designed and constructed by Morgan Sandercock. This video shows the weights vibrating on the wing tip spar. Accelerometers are placed inside the wing. The small monitor displays a real time graph of accelerometer data from any vibrations felt on the wing. Similar displays are inside both cockpits. Data are also sent to our ground station via telemetry while flying.
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I'm confused. Do these create flutter for testing or do they damp flutter if it occurs?

theflyingfool