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Flutter suppression device for airplane model

A technology of aircraft model and suppression device, which is applied in the direction of measuring device, machine/structural component test, instrument, etc. It can solve problems such as difficult to find protective rope, difficult protective rope protection, difficult installation of pulleys, etc.

Active Publication Date: 2011-11-09
COMAC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned method of suppressing flutter needs to install protective ropes in the wind tunnel, and holes need to be drilled in the test wind tunnel for the installation of pulleys and other mechanisms, which will have a certain impact on the quality of the flow field
In addition, for large-scale wind tunnel flutter tests, it is difficult to find matching protective ropes, and the installation of pulleys is also difficult, so it is difficult to use protective ropes and simple mechanical devices to protect

Method used

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  • Flutter suppression device for airplane model
  • Flutter suppression device for airplane model
  • Flutter suppression device for airplane model

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Embodiment Construction

[0035] Such as Figure 2-5 As shown, the wind tunnel model flutter suppression device has a hollow casing 101, a slider 102, a drive assembly and a control assembly. The slider 102 is movably disposed in the housing 101 . The driving assembly is also arranged in the housing 101 , which drives the slider to move in the housing 101 . The control component controls the operation of the drive component.

[0036] Such as Figure 2-3 As shown, in one embodiment of the present invention, the drive assembly is composed of a ball screw 103, a slider 102, and a stepper motor (not shown), and the stepper motor rotates forward or backward at a certain speed as required. A certain number of steps are reversed to drive the counterweight of the slider 102 to move to the designated position at the designated speed, so as to realize the change of the center of gravity of the model, thereby changing the critical speed of chatter and suppressing chatter.

[0037] Such as figure 2 As shown,...

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Abstract

The invention provides a flutter suppression device for an airplane model, which is used for suppressing the flutter of the airplane model in a wind tunnel test of an airplane flutter model. The flutter suppression device comprises a hollow shell, a sliding block, a driving component and a control component, wherein the sliding block is movably arranged in the shell; the driving component is arranged in the shell and drives the sliding block to move in the shell; and the control component controls the work of the driving component. The flutter suppression device for the airplane model suppresses the flutter of the model by changing the gravity center of a wing or a tail wing of the airplane flutter model; the device is directly arranged on the wing and the tail wing of the airplane flutter model, so a pulley and a protective rope are not required to be arranged in a wind tunnel any more, and the flow field quality of the wind tunnel cannot be influenced; in addition, the flutter suppression device is directly arranged in the airplane flutter model, so the device is not influenced by the sizes of the airplane flutter model and the wind tunnel.

Description

technical field [0001] The invention relates to a model protection device for flutter wind tunnel test, in particular, the invention relates to a model aircraft flutter suppression device. Background technique [0002] Aircraft flutter is a self-excited vibration under the action of aerodynamic force, elastic force, and inertial force. It absorbs energy from the air. Once the flight speed pressure exceeds a critical value, the amplitude increases rapidly, resulting in damage to the aircraft structure. [0003] Flutter is a destructive vibration, so flutter is not allowed within the flight envelope of the aircraft. In order to ensure that there is no flutter in flight, it is necessary to study and check the flutter performance of the designed aircraft structure, and the flutter wind tunnel test of the aircraft model is an important means to study flutter. [0004] In the existing technology, the flutter model wind tunnel test is very dangerous, and a reliable flutter suppres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/08
Inventor 范石磊窦忠谦梁技孙亚军周铮李效法
Owner COMAC
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