A wind loading device for wing ground resonance test

A wind-loaded, ground-based technology used in aircraft component testing and other directions
CN107521719BActive Publication Date: 2020-10-23XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
Publication Date
2020-10-23

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Abstract

The invention discloses an airfoil ground resonance test wind power loading device and relates to the technical field of aircraft aeroelasticity. The airfoil ground resonance test wind power loading device comprises a pneumatic load flow dividing dredging structure (2) and a pneumatic loading mechanism (3) used for applying a pneumatic load to the pneumatic load flow dividing dredging structure (2). The pneumatic load flow dividing dredging structure (2) is arranged to be of a cone cylinder structure; the small end of the cone cylinder structure is provided with a flow baffle plate (21) provided with flow baffle holes (211); and the pneumatic load flow dividing dredging structure (2) is mounted in the pneumatic pressure center position of an airfoil (1) through the flow baffle plate (21). The airfoil ground resonance test wind power loading device has the advantages that the airfoil ground resonance test wind power loading device can adjust the loading position, the loading angle and the magnitude of the applied load along with deformation of the airfoil, thus deformation of various typical states of an airplane is advantageously simulated, the operation flow is simple, and the test efficiency and the reliability of results can be greatly improved.
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Description

technical field

[0001] The invention relates to the technical field of aircraft aeroelasticity, in particular to a wind force loading device for an aircraft wing ground resonance test. Background technique

[0002] In the conventional ground resonance test, the deformation of the free end of the wing is basically not considered, and there is no mature deformation loading method for the wing. However, for large-aspect-ratio and highly-flexible aircraft, the deformation of the wingtip in the cruising state often exceeds 20% of its half-span, and the nonlinear influence brought by the deformation of the wingtip is already very large; During the test, the large deformation of the aircraft in the air was simulated in advance to find out the inherent characteristics of the aircraft in the state of large deformation to ensure flight safety. Therefore, it is necessary to design a set of wing large deformation loading methods suitable for ground resonance tests. Contents of the in...

Claims

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