公开(公告)号：US20190248473A1

公开(公告)日：2019-08-15

申请号：US15895189

申请日：2018-02-13

Applicant: U.S. Army Research Laboratory ATTN: RDRL-LOC-I

Inventor： Hao Kang ,  Matthew W. Floros

IPC: B64C13/18 ,  B64C29/00 ,  B64D45/00

CPC classification number: B64C13/18 ,  B64C29/0033 ,  B64D45/00 ,  B64D2045/0085

Abstract: Mitigating whirl flutter in a tiltrotor aircraft includes providing at least one control surface supported for movement relative to a pylon attached to the aircraft's wing; providing an actuator for moving the control surface relative to the pylon; providing at least one sensor system to sense at least one deformation mode of the wing tip; providing a control system having one or more inputs and one or more output signals; using an electrical signal relating to deformation of the wing tip to serve at least as the basis for at least one of the inputs to the control system; determining at least one output signal of the control system based at least in part on the electrical signal relating to deformation; and controlling the actuator based at least in part on the output signal of the control system to move the control surface so as to counteract the deformation.