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Method for constructing parameterized model of liquid rocket engine

A technology of engine parameters and liquid rockets, applied in 3D modeling, image data processing, design optimization/simulation, etc., can solve problems such as low efficiency, achieve automatic transmission, improve processing efficiency and quality, and realize real-time driving effects

Pending Publication Date: 2022-03-18
XIAN SPACE ENGINE CO LTD
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Problems solved by technology

The above-mentioned process method has the situation of repeated comparisons in the actual operation process, and the efficiency is low

Method used

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  • Method for constructing parameterized model of liquid rocket engine

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Embodiment Construction

[0036] The following describes the present invention in detail, and the features and advantages of the present invention will become more clear and definite along with these descriptions.

[0037] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0038] The invention relates to a method for constructing a parametric model of a liquid rocket engine, which combines parametric modeling technology with reverse engineering to realize that the parametric characteristics of the model driven by receiving the measurement data of the laser measurement system are consistent with the actual state of the engine, and is used for subsequent research based on the mo...

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Abstract

The invention discloses a liquid rocket engine parameterized model construction method, which comprises the following steps of: firstly, splitting an initial design model according to an actual welding seam position to obtain each independent component model, then establishing a parameterized characteristic expression of a welding seam, and recombining the parameterized characteristic expression of the welding seam with each independent component model to obtain a parameterized model of a liquid rocket engine; establishing a flange end face circle center coordinate and normal vector feature expression, adjusting the position and angle of the flange according to the expression to obtain a parameterized model of the liquid rocket engine, and finally assigning values to parameters in each expression according to measurement data obtained by a measurement system in real time to obtain a parameterized model of the liquid rocket engine. And actual measurement driving of the parameterized model of the liquid rocket engine is realized. According to the method, a liquid rocket engine entity is measured to obtain positioning point space position coordinates or weld joint related parameters which have great influence on pipeline machining, parameterized driving of the model is achieved through construction of the parameterized model, and a foundation is laid for follow-up pipeline assembly simulation and machining allowance determination.

Description

technical field [0001] The invention belongs to the field of computer graphics, and in particular relates to a method for constructing a parametric model of a liquid rocket engine. Background technique [0002] With the rapid development of computer technology, digital manufacturing technologies such as reverse engineering and parametric design are widely used in industrial fields. [0003] Reverse engineering refers to the process of using certain measurement methods to measure the model of the object or the object itself, and reconstruct the CAD model of the object through the three-dimensional geometric modeling method from the measured data, so as to realize the process of product remanufacturing. [0004] Parametric design refers to all the dimensions of the parametric model, part or all of which are specified using corresponding expressions or other methods, without giving a method of specifying specific values. Its essence is to realize the flexible design of product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/15G06F30/20G06T17/00
CPCG06F30/15G06F30/20G06T17/00
Inventor 陈新红李万鹏闫明辉岳婷张飞飞张国悦祝孟琪
Owner XIAN SPACE ENGINE CO LTD
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