System effectiveness and life cycle costs of aircraft were focused more than the capability . to meet more and more the demands of safety , scheduled service , economy and comfort , commercial aircraft manufacturers do more and more work on the reliability and maintainability in aircraft design and manufacturing 在此前提下，为使现代商用飞机进一步满足安全、正点、经济、舒适的使用要求，各飞机制造商都在商用飞机的设计和生产阶段，针对飞机的可靠性、维修性开展了大量工作，并收到良好效果。
And multidisciplinary design optimization ( mdo ) , a new theory about complex engineering system design , is chosen as the optimization method for such a large engineering system . the main points in this paper are as follows : ( 1 ) based on the system effectiveness model from wseiac , this paper studies the corresponding factors of torpedo weapon system , and gives both its model and analysis architecture . every effectiveness index is studied and given corresponding ways of analysis 本文的主要研究内容和成果如下： ( 1 )运用wseiac模型，结合鱼雷武器系统的作战过程和武器系统组成的具体实际，给出了鱼雷武器系统作战效能的数学模型，构造了作战效能分析的指标体系，并对各个作战效能指标进行了详细的分析和讨论，给出了相应的分析和研究方法；综合应用模糊数学和灰色理论，提出了两种用于作战效能评判的灰色模糊综合评判方法；为了考虑作战过程中的不确定因素，设计了一种作战效能的仿真方法。
In order to evaluate effectively the synthetic effectiveness of military satellite system , in this paper task set that military satellite system will complete is disputed , some models and methods for evaluation effectiveness of weapon system are analysed , and basic theorems and methods for military satellite systems effectiveness evaluation are proposed 为有效地对军用卫星系统的综合效能进行评估，针对军用卫星系统的信息支援使命集，在分析已有武器系统效能评估模型、方法的基础上，提出了军用卫星系统综合效能评估的基本原则与方法。
