Movable surface operation gap simulating device

Abstract

The invention relates to a movable surface operation gap simulating device and belongs to the technical field of aeroelastic tests. The device comprises a movable surface rotating shaft fixedly connected with the movable surface beam of a vertical fin model and rotationally connected with the body of the movable surface operation gap simulating device; a rotary support arm with one end fixed to the movable surface rotating shaft and the other end provided with a gap positioning pin; the gap positioning pin disposed in a through hole on one end of a gap rocking arm which is rotationally connected with the body of the movable surface operation gap simulating device via a rocking arm rotating shaft; and a rotary spring. One end of a spring wire forming the rotary spring is fixed to the rocking arm rotating shaft and the other end of the spring wire is fixed to the body of the movable surface operation gap simulating device. When the vertical fin model rotates, the gap positioning pin is in contact with the inner wall of the through hole of the gap rocking arm so as to drive the gap rocking arm to swing for elastically deforming the rotary spring. The movable surface operation gap simulating device simulates an influence of the movable surface gap of the vertical fin model on an airplane flutter characteristic.

Description

technical field [0001] The invention belongs to the technical field of aeroelasticity test, and in particular relates to a device for simulating a movable surface manipulation gap. Background technique [0002] There must be gaps in the control system of the active surface of the aircraft, and the resulting nonlinearity of the control stiffness will cause the limit cycle oscillation of the aircraft, so that the aircraft will flutter and fail when the flutter speed is lower than the design. . Therefore, in the flutter calculation and flutter model design of the aircraft, it is necessary to consider the influence of the movable surface clearance on the flutter characteristics of the aircraft, but the flutter model of the movable surface is small, and it is difficult to simulate the control clearance in the model. Contents of the invention [0003] In order to solve the above problems, the present invention provides a movable surface control gap simulation device, which can ...

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Problems solved by technology

[0002] There must be gaps in the control system of the active surface of the aircraft, and the nonlinearity of the control stiffness brought about will cause the limit cycle oscillation of the aircraft, so that the aircraft will flutter and fail when the flutter speed is lower than the design.

Therefore, in the flutter calculation and flutter model design of the aircraft, it is necessary to consider the influence of the movable surface clearance on the flutter characteristics of the aircraft, but the flutter model of the movable surface is small, and it is difficult to simulate the control clearance in the model

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