空间工业平台及其模块质量评估模型

O. Palii
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摘要

本文的目标是建立空间工业平台及其模块的质量模型。在研制新航天器的初始阶段,可获得的基本数据有限。对于航天工业平台,主要包括:主要模块和辅助模块的配置,在平台上实施的工艺流程参数(真空和微重力水平,设备能量容量),制造设备配置。工业平台设计的一个特点是,关于平台参数选择和平台概念设计逻辑的理论著作很少,如果有的话。在本文中,设计过程被认为适用于概念设计阶段。这一阶段的特点是,除了对平台布局的总体概念、主要业务系统的预期类型、一些基本数据以及在平台上实施的工艺流程参数之外,对所要开发的系统一无所知。工业平台等新型复杂空间系统的设计过程是一个多层次的迭代优化过程,在此过程中,其特性和组成部分的质量分数是确定和细化的。本文提出了一个工业平台及其模块的质量模型,在该模型的开发过程中,将平台及其组件分解为系统要素的层次。对机载航天器系统的质量分数进行了统计分析。确定了所研究航天器样品质量分数的平均值及其散射系数(色散和均方差)。对于平均值和离散度,确定了99.9个置信区间。计划利用卫星系统的质量分数和本研究确定的置信区间,即某一特定系统的最小和最大可能质量,对空间工业平台的设计进行进一步研究。
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Model for assessing the mass of a space industrial platform and its modules
The goal of this paper is to develop mass models of a space industrial platform and its modules. At the initial stage of development of a new spacecraft, a limited set of basic data is available. For a space industrial platform, they are as follows: the configuration of its main and auxiliary modules, the parameters of the technological processes to be implemented on the platform (the vacuum and the microgravity level, the equipment energy capacity), and the manufacturing equipment configuration. A feature of industrial platform design is that there are few, if any, theoretical works on the choice of platform parameters and the logic of platform conceptual design. In this paper, the design process is considered as applied to the conceptual design stage. This stage is characterized by that nothing is known about the system to be developed except for the general concept of the platform layout, the expected types of the main service systems, some basic data, and the parameters of the technological processes to be implemented on the platform. The process of designing a new complex space system such as an industrial platform is a multilevel iterative and optimization process, during which its characteristics and the mass fractions of its components are determined and refined. The paper presents a mass model of an industrial platform and its modules, in whose development the platform and its components were decomposed to the level of system elements. A statistical analysis of the mass fractions of the onboard spacecraft systems was carried out. The mean values of the mass fractions for the sample of spacecraft under study and their scattering coefficients (the dispersion and the mean square deviation) were determined. For the mean values and the dispersion, 99.9 confidence intervals were determined. Further studies on the design of space industrial platforms are planned to be carried using the mass fractions of satellite systems and the confidence intervals, namely, the minimum and the maximum possible mass for a particular system, determined in this study.
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