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为了减轻重量,阿波罗宇航飞行器的压力容器采用低达1.5的安全系数设计。较低的安全系数及压力容器断裂的严重性,要求在容器规划全过程保持严格的制造要求和控制,以保证生产优质的容器。此外,为了证实和控制容器的安全工作,引进制造后的分析技术。经验表明,降低安全系数水平的直接结果是没有问题的,容器的主要问题包括材料与充压剂不相容的隔离情况、不适当的程序控制和材料的反常。但是,业已表明,降低安全系数可能增加材料对应力腐蚀的敏感性和不相容问题。正如反映在设计、制造、使用和轻量压力容器管理的一些建议中那样,每个问题的解决都为保证安全工作提供了所需的知识。为了达到容器制造和使用的有效控制,需要对宇航压力容器的可信赖性进行专门的鉴别和测定。
In order to reduce weight, Apollo spacecraft pressure vessels with low safety factor of 1.5 design. The lower safety factor and the severity of pressure vessel breakage require that stringent manufacturing requirements and controls be maintained throughout the vessel’s planning to ensure the production of good vessels. In addition, in order to confirm and control the safety work of the container, the post-manufacturing analytical technique is introduced. Experience has shown that there is no problem with the direct result of a reduction in the level of safety factors. The main problems with containers include incompatible materials and containment isolators, inadequate process control and material anomalies. However, it has been shown that reducing the safety factor may increase the susceptibility and incompatibility of materials to stress corrosion. As reflected in some of the recommendations for designing, manufacturing, using and lightweight pressure vessel management, the solution to each problem provides the knowledge needed to ensure safety. In order to achieve effective control of container manufacturing and use, the reliability of aerospace pressure vessels needs to be specifically identified and measured.