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A frame-type airfoil structure aerodynamic load loading system and loading method

A technology of aerodynamic load and loading system, which is applied in the testing of machine/structural components, testing of mechanical components, instruments, etc., can solve the problems of high cost and high level of layout requirements, and achieve the reduction of mutation, uniform loading load distribution, and maintenance stable effect

Active Publication Date: 2021-03-26
CHINA SPECIAL TYPE FLIER RES INST
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  • Summary
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Problems solved by technology

This loading method has higher requirements on the bonding process of the cord and the layout of the levers. The pasting of the cord is a dot-matrix simulated aerodynamic load, and the cost is relatively high.

Method used

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  • A frame-type airfoil structure aerodynamic load loading system and loading method

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Embodiment Construction

[0024] The specific implementation manner of the present invention will be described in detail in conjunction with the summary of the invention and the accompanying drawings.

[0025] A frame-type airfoil structure aerodynamic load loading system, including a sealed film bag 2 attached to a single grid frame of an airfoil structure 1 with a grid frame, the sealed film bag 2 is an airtight structure with a storage space inside, and adopts liquid Made of impermeable soft material. The top surface of the sealed film bag 2 is provided with a breathable valve 3, the liquid inlet pipe 4 provided with the liquid inlet pump 9 and the liquid outlet pipe 5 provided with the liquid outlet pump 10 are uniformly connected to the sealed film bag 2 at one end, and the other end extends into the airtight film bag 2. In the liquid storage tank 11. A flow meter 7 is arranged on the liquid inlet pipe 4 and the liquid outlet pipe 5 .

[0026] A control unit 6 is provided in each grid frame that...

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Abstract

The invention discloses an aerodynamic loading system and loading method for a frame-type airfoil structure. A sealing film bag with an inlet and an outlet is arranged in each frame of the frame-typeairfoil structure, and filled with liquid. The liquid has fluidity. The bags can be evenly distributed in a lower airfoil so as to simulate a pneumatic pressure with a pressure generated by the weightof the liquid on the lower airfoil; The pressure value of the lower airfoil in each frame is controlled by controlling the volume of the liquid in each bag, and automatic control can be realized by programming.

Description

technical field [0001] The invention belongs to the field of aircraft structure strength test, and in particular relates to a frame type airfoil structure aerodynamic load loading system and a loading method. Background technique [0002] The airfoil of an aircraft includes wings, empennages, canards, etc. When the airflow flows through it, aerodynamic pressure is generated to achieve functions such as lift and steering torque. The airfoil has a certain aerodynamic shape. In order to maintain the aerodynamic shape and reduce weight, the airfoil is often designed as a frame structure composed of beams and ribs. [0003] After the preliminary design of the aircraft wing surface, a structural strength test is required to verify whether the strength and realization of the aircraft wing surface structure under the action of aerodynamic loads meet the requirements for use. Aerodynamic loads are perpendicular to the airfoil outward. [0004] An existing method for applying aerody...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 李元章朱强王喜鹤何巍鲁国富玉曜瑜
Owner CHINA SPECIAL TYPE FLIER RES INST
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