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Test method for central wing box

A technology of a central wing box and a test method, which can be used in aircraft component testing, mechanical component testing, machine/structural component testing, etc., and can solve problems such as imperfection, complex boundary conditions, and high test costs.

Active Publication Date: 2018-07-03
CHINA AIRPLANT STRENGTH RES INST
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AI Technical Summary

Problems solved by technology

[0003] Since the central wing box is associated with the middle fuselage and outer wing structures, the boundary conditions are complex. In the past, the strength verification of this structure was mostly carried out in the whole machine test, or in the form of a wing-body assembly. The model stage means higher test cost; for a large number of composite material central wings with ±45° layup in the upper and lower wall panels, the structure is not strictly axisymmetric, and half of the central wing box is used for test verification in foreign countries Obviously not perfect

Method used

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  • Test method for central wing box
  • Test method for central wing box
  • Test method for central wing box

Examples

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Embodiment Construction

[0029] Provide a central wing box test method, including central wing box test piece 1, test piece support system 2, simulated side wall panel support system 3, simulated fuselage frame support system 4, simulated floor beam support system 5, and outer wing loading system 6;

[0030] The simulated side wall panel support system 3, the simulated fuselage frame support system 4, the simulated floor beam support system 5 and the outer wing loading system 6 are all supported and loaded through actuators;

[0031] The central wing box test piece 1 includes the central wing box 7, the floor beam 8, the fuselage main frame 9 connected to the central wing rear beam, the fuselage side wall plate loading joint 10, the fuselage side wall plate 11, and the fuselage weak frame 12 1. The fuselage main frame 13 and the keel beam cut-off section 14 connected with the central wing front beam; and the fuselage main frame and the weak frame are straight sections with joints, and the keel beam cu...

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Abstract

The invention relates to a test method for a central wing box. A test piece, a test piece support system, a simulated side wall panel support system, a simulated fuselage frame support system, a simulated floor beam support system and an outer wing loading system are included. The test method reduces the cost and can carry out comprehensive test assessments on the strength of the central wing box.The method can simulate the boundary condition and the stress state of the central wing box in an airframe without the need of processing fuselage barrel sections for support more really.

Description

technical field [0001] The invention belongs to the field of structural test mechanics. Background of the invention [0002] As one of the most important stress-bearing parts in the aircraft structure, the central wing box of the wing traverses the middle fuselage, connects the left and right outer wings as a whole, and balances and transmits the load from the outer wings. Most of them are in the state of bending, torsion, shearing, and airtight composite stress. This part is related to the force transmission of the entire wing-body structure and the safety of the airframe, and is a very important research topic in structural mechanics. [0003] Since the central wing box is associated with the middle fuselage and outer wing structures, the boundary conditions are complex. In the past, the strength verification of this structure was mostly carried out in the whole machine test, or in the form of a wing-body assembly. The model stage means higher test cost; for a large numbe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64F5/60G01M13/00
CPCB64F5/60G01M13/00
Inventor 柴亚南王力立王进张阿盈戚岩李新祥
Owner CHINA AIRPLANT STRENGTH RES INST
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