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Large scale solid engine drop test release device

A technology of solid motor and drop test, applied in the field of release device and drop test release device, can solve the problems of large volume and mass of large solid motor, high requirements for release consistency and stability, and inability of release device to meet the requirements, and achieves a high level of improvement. Test precision control, good action synchronization, compact structure

Inactive Publication Date: 2016-08-10
XIAN AEROSPACE PROPULSION TECH INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large volume and mass of large solid motors, the requirements for release consistency and stability are high, and this release device cannot meet the requirements

Method used

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  • Large scale solid engine drop test release device
  • Large scale solid engine drop test release device
  • Large scale solid engine drop test release device

Examples

Experimental program
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Embodiment Construction

[0018] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0019] This embodiment provides a new opening release device for the drop test of a large engine (2m in diameter, about 3m in length, and 12t in weight). The method, combined with the opening and release of the explosive bolt, not only solves the clamping problem, but also improves the control accuracy of the test.

[0020] The release device needs to be placed on the drop tower 3, the design load of the drop tower 3 is 25t, it is a steel structure, and the material is Q235B. Such as figure 1 As shown, the release structure 2 is installed on the two beams in the middle of the drop tower 3. Before the drop test, the tested engine 1 is placed on the release mechanism 2 according to the specified height. During the test, the release mechanism 2 works, and the tested engine 1 is quickly released. , falling freely to the ground while maintaining the specified...

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Abstract

The invention discloses a large scale solid engine drop test release device which can be applied to large scale engine drop tests. The large scale solid engine drop test release device is strong in transient response capability and good in movement synchronicity. The device comprises a test rack and a release mechanism, wherein the test rack is used for supporting the release mechanism, an engine being tested can be arranged at a specified height on the release mechanism, the release mechanism supports the engine being tested via a baffle plate in a lifting manner, the baffle plate is fixed with a binding tie, and one of the binding tie is connected via an explosive screw bolt assembly. When a downward explosion screw bolt sends an initiation signal, the explosion screw bolt is broken, the binding tie is loosened, the baffle plate is untied without constraint, and the engine being tested falls freely. The engine being tested is supported in a lifted manner, a phenomenon that the engine is damaged due to clamping force of a clamping tool or calipers can be prevented, and the structure of the device is simpler and smaller than the structure of the clamping tool or the calipers; compared with a conventional clamping force unloading mode, the device which employs the explosion screw bolt is strong in transient response capability and good in movement synchronicity, and testing precision control can be improved.

Description

technical field [0001] The invention relates to a release device, in particular to a drop test release device used in a drop test of a large solid motor, and belongs to the technical field of engine test. Background technique [0002] In the field of engine safety research, the drop test is an effective test method for impact safety evaluation and assessment of the engine. The test method is usually to place the engine at a specified height, and let the engine fall freely on the specified material ground with a specified attitude. In this test, the release device of the engine under test is the key device for the successful implementation of the test. Therefore, the release device is required to have a sensitive instantaneous response and good synchronization of actions. The falling posture is stable. [0003] Existing engine drop test release devices generally use clamps or calipers to clamp the engine under test and lift it to a specified height. After receiving the relea...

Claims

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Application Information

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IPC IPC(8): G01M7/08
CPCG01M7/08
Inventor 侯晓刘长猛袁军刘凯敖麟王宇孙利清李侃
Owner XIAN AEROSPACE PROPULSION TECH INST
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