航天测控工程计量保障需求和管理对策研究

航天测控工程计量保障工作是完成航天器飞行测量控制任务的重要保证。对比了航天测控系统与普通电子测量仪器的功能原理,分析了影响航天测控工程测量准确度的因素,研究了航天测控工程中测量准确度和工程技术活动计量保障需求,针对航天测控工程计量保障特点和存在问题,提出了建立并完善航天测控工程计量保障体系的管理对策建议。     

大型客机数字化设计支持体系框架

 大型飞机是对中国航空工业形成巨大挑战的大型工程项目,具有研制周期紧、技术难度大、质量要求高的特点,而设计又是引领研制的关键阶段。分析了数字化技术在飞机设计中的应用和发展情况,提出了大型客机数字化设计体系的概念,该体系能够覆盖大型客机设计全过程、对设计相关的各专业技术与管理部门提供支持、并能与制造及服务等环节相联系。提出了大型客机数字化设计体系框架,对其中包含的10个系统的功能和运行模式进行了阐述。最后展望了大型客机数字化设计的发展趋势。     

Comparison Structure Forms Between Isogrid and Orthogrid of C/ E CompositeTrellis Wound Structure Based on Calculation of Load Carrying

This paper calculated load carrying of isogrid and orthogrid of carbon epoxy composite trellis wound
structure (C/ E CTWS) using non linear finite element method. Based on the analysis, test cases were designed and
tests of axial compression were carried. Analysis result and test result fit well. In order to be used in the project, this
kind of structure cut out repairing was calculated. The method presented in this paper has been proved and can be used
to solve complicated engineering problems. According to calculations and experimental results combined with applica
tion, a principle of choosing wound structure is obtained and principle could be applied to engineering.