Unlock instant, AI-driven research and patent intelligence for your innovation.

A Folding Wing Nonlinear Flutter Test Device

A test device, nonlinear technology, applied in the field of folding wing nonlinear flutter test device, to achieve the effect of saving model processing and test costs, compact structure and high efficiency

Active Publication Date: 2017-05-17
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional flutter model design method cannot realize the nonlinear simulation of the folded wing gap

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A Folding Wing Nonlinear Flutter Test Device
  • A Folding Wing Nonlinear Flutter Test Device
  • A Folding Wing Nonlinear Flutter Test Device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated.

[0030] Such as figure 1 and figure 2 As shown, a kind of folded wing nonlinear flutter test device provided by the present invention at least includes wing inner spar 1, wing outer spar 2, bending bearing bracket 3, bending bearing cover plate 4, torsion bearing bracket 5, The torsion shaft 7, the bending spring 9, the torsion spring 10, the bending gap limiting angle piece 11 and the torsion gap limiting angle piece 12.

[0031] One side of the bending bearing bracket 3 is fixedly connected to the end surface of the wing inner spar 1 by bolts, and the axial ends of the bending bearing bracket 3 are symmetrically provided with bearing seats; the axial ends of the to...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of aeroelastic tests and specifically relates to a folded wing non-linear flutter test device. On a wing flutter model, the folded wing non-linear flutter test device can realize gap nonlinearity respectively and simultaneously in bending and torsion two directions, and the size of each gap can be adjusted by the folded wing non-linear flutter test device. The folded wing non-linear flutter test device comprises a wing inner spar, a wing outer spar, a bending bearing support, a torsion bearing support, a torsion shaft, a bending spring, a torsion spring, a bending gap limiting angle sheet and a torsion gap limiting angle sheet. An outer wing can follow the torsion bearing support to rotate, so that the gap nonlinearity in the central bending direction is realized relative to an inner wing. The outer wing can further follow the torsion shaft to rotate, so that the gap nonlinearity in the central torsion direction is realized relative to the inner wing. In addition, the sizes of a first strip-shaped gap and a second strip-shaped gap can be adjusted, the structure is compact and highly efficient, the simulation of a plurality of test states can be realized on one set of module, and the module machining and testing cost is saved.

Description

technical field [0001] The invention relates to the technical field of aeroelasticity test, in particular to a folding wing nonlinear flutter test device. Background technique [0002] Wing folding technology is one of the key technologies in the design of UAVs and carrier-based aircraft. By folding the wings, the space occupied by the aircraft can be significantly reduced. The inner and outer surfaces of the folding wing are usually hinged and driven by hydraulic actuators. Since there must be a gap in the hinge structure, the resulting gap nonlinearity will inevitably affect the structural dynamic characteristics of the wing, and then affect the aeroelastic characteristics of the wing. Therefore, in the flutter model design of folding-wing aircraft, the influence of gap nonlinearity must be taken into account. The traditional flutter model design method cannot realize the nonlinear simulation of the folded wing clearance. Contents of the invention [0003] The purpose...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/02
Inventor 陈海黄国宁马翔孙晓红蒲利东
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com