Patent ID: 11885299
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Measurement (Instruments)
Classification: CPC F  G  Y | IPC F  G

Claim 16:
17. A testing device for testing a rotor blade, comprising:
a clamping device for clamping a rotor blade at a clamping point of the rotor blade, so that a longitudinal axis of the rotor blade extends substantially horizontally starting from the clamping point,
one or more load frames to be attached to the rotor blade,
at least two active load-introducing means, each of which is attached to one of the load frames,
at least one passive load-introducing means attached to one of the load frames,
wherein
at least one of the at least two active load-introducing means is configured for introducing loads into the rotor blade in a pivot direction, and at least one of the at least two active load-introducing means is configured for introducing loads into the rotor blade in an impact direction,
and wherein the at least one passive load-introducing means is externally anchored and comprises an elastic element and/or a decoupled mass and is adapted to adjust a system natural frequency in the pivot direction and/or in the impact direction, for a system comprising the rotor blade and the at least one passive load-introducing means.