Structural optimization technology, as advanced as it has become, is still not used to fully automate the design of airframe components at a level of analysis detail that would be acceptable for certification by regulatory agencies. It is part of the development of certifiable structures but is still just a part, requiring significant manual labor invested by stress engineers working with empirical and semi-empirical methods for detail analysis periodically along the design path. The Paper presents an attempt to apply an integrated model-based systems engineering philosophy, fully automated, to the process of designing and certifying aircraft structures with a level of detail and scope of modeling that would meet certification requirements. The Paper presents comparisons, not available until now, between the cost and time required by current design methods practiced in industry and required for certification and by an integrated model-based design method in the case of a particular and important aerospace structural system: the engine pylon. Weight and the development costs of the resulting designs are compared. It allows for the first time an examination of the benefits of product weight performance of the integrated model-based approach as well as engineering effort in a highly realistic certification-driven structural design case. The Paper also describes technical modeling and design automation innovations required to build the practical certification level integrated design optimization platform used here.

结构优化技术，尽管已经变得先进，但仍未用于在分析细节级别上完全自动化机身部件的设计，这对于监管机构的认证是可以接受的。它是可认证结构开发的一部分，但仍然只是一部分，需要应力工程师投入大量的体力劳动，他们需要使用经验和半经验方法来在设计路径上定期进行详细分析。本文提出了一种尝试，以完全自动化的方式，将基于模型的集成系统工程原理应用于飞机结构的设计和认证过程，其详细程度和建模范围可以满足认证要求。本文介绍了比较功能，目前尚不可用，在特定且重要的航空航天结构系统（例如发动机吊架）的情况下，必须采用目前在行业中实践的现有设计方法以及认证所需的成本和时间，以及基于模型的集成设计方法。比较了最终设计的重量和开发成本。它允许首次检查基于集成模型的方法的产品重量性能的好处，以及在高度现实的，由证书驱动的结构设计案例中的工程工作。本文还介绍了构建此处使用的实际认证级别集成设计优化平台所需的技术建模和设计自动化创新。