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Solid rocket engine elasticity weak constraint test rack

A technology of solid rockets and motors, which is applied in the direction of rocket motor devices, machines/engines, mechanical equipment, etc. It can solve problems such as processing errors, mutual interference between installations, failure to achieve test goals, etc., achieve small mutual interference, ensure position accuracy and safety Reliability, the effect of realizing precise and precise positioning and reliable limit

Pending Publication Date: 2021-04-06
内蒙航天动力机械测试所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the predetermined test objectives cannot be achieved; machining errors, installation errors, and small deformations generated when the moving frame is constrained by force will cause mutual interference between the moving frame constraints, resulting in additional force output and certain elastic resistance

Method used

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  • Solid rocket engine elasticity weak constraint test rack
  • Solid rocket engine elasticity weak constraint test rack
  • Solid rocket engine elasticity weak constraint test rack

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Embodiment Construction

[0023] The present invention is further described in conjunction with accompanying drawing and specific embodiment:

[0024] The overall device of the present invention is composed of ground guide rails, a fixed frame, a moving frame, a test engine, and an adjustment device, such as figure 1 shown.

[0025] In order to meet the requirements of test accuracy, a special design of the test bench is required. Including rational determination principles, test bench structure design, test bench installation and debugging methods, etc. The design criteria for the test bench are:

[0026] The bench has a high natural frequency, which ensures the stability of the dynamic characteristics of the engine during work; the interference between the moving frame constraints is small; ensures the safety and reliability of the engine during installation and work; With small displacement movement space.

[0027] The frame fixing device is composed of underframe, beam, column, bracket plate, l...

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Abstract

The invention relates to a solid rocket engine test, in particular to a solid rocket engine elasticity weak constraint test rack. The solid rocket engine elasticity weak constraint test rack comprises ground guide rails, fixed frames, a movable frame, a test engine and adjusting devices, wherein the ground guide rails are fixed on a concrete base, and are connected through a bottom frame of the fixed frames so as to fix the bottom frame; support flat plates of the fixed frames are connected with a connecting bottom plate of the adjusting devices, a sliding plate bearing of the adjusting devices supports the test engine, and a limiting frame limits the test engine; and a connecting disc of the movable frame is connected with the test engine, and the test engine is tested through a sensor arranged in the device. Mutual interference between constraints is small, and the measurement accuracy is improved. Under the constraint effect, the rack has high inherent frequency, and it is guaranteed that the dynamic characteristic of the engine is stable in the working process.

Description

technical field [0001] The invention relates to a solid rocket motor testing test, in particular to a solid rocket motor elastic weak constraint test frame. Background technique [0002] The engine is in an unconstrained or weakly constrained environment during flight with the missile, which is similar to an elastic body. In the conventional ground test process, the engine is under the strong constraint of the test frame, and the head and tail are fastened with fixed connection devices. The limit makes the engine more similar to rigidity, which makes it difficult for external excitation to generate coupling effects through the engine casing and internal combustion flow. Wait, it is difficult to appear on the ground for a test drive. This makes it difficult to expose some potential problems in engine development tests, which brings hidden dangers to subsequent flight tests and use, and is not conducive to engine design improvements. External vibration and shock loads during...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02K9/96F02K9/08
CPCF02K9/96F02K9/08
Inventor 钱程远程博安健陈欣欣
Owner 内蒙航天动力机械测试所
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