Method for managing complex spacecraft three-dimensional model

Abstract

The invention relates to a method for managing a complex spacecraft three-dimensional model. Framework models of the complex spacecraft three-dimensional model are divided into a configuration-layer framework model and a layout-layer framework model from top to bottom. The configuration-layer framework model is a first-layer framework model and is composed of top layer coordinate systems for expressing a spacecraft, large system interfaces, complete machine configuration and cabin interfaces. The layout-layer framework model is a second-layer framework model and is used for expressing layout information of single equipment, loads and structural mechanisms of all subsystems in the spacecraft on the basis of receiving configuration layer information, a single equipment coordinate system is built, transmission from top to bottom is carried out through the uniform coordinate system of the whole spacecraft three-dimensional model, the uniform data transmission and assembling standard is built, three-dimensional model information is managed, the changeability and accuracy of the spacecraft three-dimensional model are improved, cooperation and integration between designers are achieved, and therefore fast derivation and deformation of serialization products are achieved.

Description

technical field [0001] The invention belongs to the field of manned spacecraft, and relates to a management method for a three-dimensional model of a complex spacecraft. Background technique [0002] The 3D modeling of spacecraft is a complex system engineering, which is jointly designed by multiple development units such as the overall structure, structural sub-systems, and stand-alone development units. The entire collaborative design process is a gradual process from abstraction to concreteness, which can be divided into Configuration design stage, general assembly layout design stage, unit equipment layout stage, detailed design stage, final assembly stage and on-orbit support stage. [0003] In the collaborative environment of the entire life cycle of the spacecraft, the top-down design method is adopted. The overall layout of each subsystem must be completed by the overall, and the overall allocation is assigned to each subsystem. The bit space allocates the internal ...

AI Technical Summary

Problems solved by technology

[0005] The spacecraft skeleton model is usually composed of datum features such as datum points, datum lines, and datum planes, and these datums are used as the positioning datum of parts assembly in the assembly process to determine the size of each component and the reference relationship between them. The model is received by reference, refined according to the design requirements of this level, and then passed downstream, so as to realize the second transfer of the reference relationship, and so on until the design reference reaches the bottom designer, and the reference is layer by layer The transfer method, the correlation between the models is very complicated. For the released geometry that can be associated, there cannot be delete, split, merge, intersect and other operations that affect the ID of the geometric element, and there will be circular references between parts, which will inevitably make the data extremely difficult. Large redundancy, resulting in confusion of reference relationship, not easy to manage