DIN 15261-2-1986 散装材料用机械式连续输送机.第2部分:螺旋输送机.螺旋式螺旋叶片

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【英文标准名称】:TerminologyforNondestructiveExaminations
【原文标准名称】:无损检验术语
【标准号】:ASTME1316-1996
【标准状态】:作废
【国别】:美国
【发布日期】:1996
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:无损检验;材料试验;词汇
【英文主题词】:vocabulary;materialtests;non-destructivetesting
【摘要】:
【中国标准分类号】:H26
【国际标准分类号】:01_040_19;19_100
【页数】:
【正文语种】:英语


Product Code:SAE AIR1168/12
Title:Spacecraft Thermal Balance
Issuing Committee:Ac-9 Aircraft Environmental Systems Committee
Scope:In the design of spacecraft, heat transfer becomes a criterion of operation to maintain structural and equipment integrity over long periods of time.The spacecraft thermal balance between cold space and solar, planetary, and equipment heat sources is the means by which the desired range of equipment and structural temperatures are obtained. With the total spacecraft balance set, subsystem and component temperatures can be analyzed for their corresponding thermal requirements.This section provides the means by which first-cut approximations of spacecraft surface, structure, and equipment temperatures may be made, using the curves of planetary and solar heat flux in conjunction with the desired coating radiative properties. Once the coating properties have been determined, the material to provide these requirements may be selected from the extensive thermal radiative properties tables and curves.These can then be cross checked to determine the degradation effects of space that may cause extensive temperature changes over long periods of time. The paragraphs reviewing previous spacecraft thermal designs, test facilities, and methods of testing should be used as a guide in the development of a design. This section assumes that the reader is familiar with the methods of thermal analyzer techniques and has available, through SHARE or other agencies, multinodal programs to solve the detailed temperature distributions required to complete a design.