数字工程目的是利用数字化手段和系统工程方法,打造数字生态系统,充分利用数字化技术发展成就,实现敏捷研发。文中充分调研美军数字工程战略的背景、内容和应用,从数字化技术手段、美军行业协同方式和数字工程战略下新的研发模式3个角度...数字工程目的是利用数字化手段和系统工程方法,打造数字生态系统,充分利用数字化技术发展成就,实现敏捷研发。文中充分调研美军数字工程战略的背景、内容和应用,从数字化技术手段、美军行业协同方式和数字工程战略下新的研发模式3个角度,解读数字工程战略的内涵,阐述了数字工程对航空装备研发的影响。面向目前航空装备研发的实际需求,探索了数字化转型的应用方法——广泛应用数字化手段、深入应用基于模型的系统工程(Model-Based Systems Engineering, MBSE)和建立适应的管理方法。展开更多
To estimate the geometric characteristics, especially wet areas and section areas, of three dimensional numerical conceptual aircraft models, a method based on surface elements is proposed. On the premise that numerou...To estimate the geometric characteristics, especially wet areas and section areas, of three dimensional numerical conceptual aircraft models, a method based on surface elements is proposed. On the premise that numerous surface elements are generated to represent each component surface, a component wet area of the surface is estimated by adding up the areas of such elements that are not covered by any other component surfaces. The elements are also used to get the section polygons of such composite surfaces as the whole aircraft at a given body station, then a section area is approximated with the sum of trapezoidal areas between such sides of polygons that are not covered by any other component and a reference axis. Practical application to a computer aided aircraft conceptual design system shows that the methed is applicable to different kinds of conceptual aircraft models and its precision is satisfying to the conceptual design.展开更多
文摘数字工程目的是利用数字化手段和系统工程方法,打造数字生态系统,充分利用数字化技术发展成就,实现敏捷研发。文中充分调研美军数字工程战略的背景、内容和应用,从数字化技术手段、美军行业协同方式和数字工程战略下新的研发模式3个角度,解读数字工程战略的内涵,阐述了数字工程对航空装备研发的影响。面向目前航空装备研发的实际需求,探索了数字化转型的应用方法——广泛应用数字化手段、深入应用基于模型的系统工程(Model-Based Systems Engineering, MBSE)和建立适应的管理方法。
文摘To estimate the geometric characteristics, especially wet areas and section areas, of three dimensional numerical conceptual aircraft models, a method based on surface elements is proposed. On the premise that numerous surface elements are generated to represent each component surface, a component wet area of the surface is estimated by adding up the areas of such elements that are not covered by any other component surfaces. The elements are also used to get the section polygons of such composite surfaces as the whole aircraft at a given body station, then a section area is approximated with the sum of trapezoidal areas between such sides of polygons that are not covered by any other component and a reference axis. Practical application to a computer aided aircraft conceptual design system shows that the methed is applicable to different kinds of conceptual aircraft models and its precision is satisfying to the conceptual design.
