CAJ | 학술논문

为了获取三维数值化概念机模型的浸润面积和横截面积等几何特性,本文提出了一种基于离散化面元的估算方法.在以大量的离散面元表示每个部件曲面的前提下,通过累加不被其他任意部件曲面所遮挡的面元的面积来估算一个部件曲面的浸润面积.离散出的面元还被用于求取全机这样的组合曲面在某一站位处的横剖面多边形,而横截面积则用累积多边形不被其他任意部件遮挡的各边与参考轴间的梯形面积予以近似.该方法在一个计算机辅助飞机概念设计系统中的实际应用表明,它可以方便地应用于不同类型的概念机模型,且估算精度满足概念设计阶段的需要.
위료획취삼유수치화개념궤모형적침윤면적화횡절면적등궤하특성,본문제출료일충기우리산화면원적고산방법.재이대량적리산면원표시매개부건곡면적전제하,통과루가불피기타임의부건곡면소차당적면원적면적래고산일개부건곡면적침윤면적.리산출적면원환피용우구취전궤저양적조합곡면재모일참위처적횡부면다변형,이횡절면적칙용루적다변형불피기타임의부건차당적각변여삼고축간적제형면적여이근사.해방법재일개계산궤보조비궤개념설계계통중적실제응용표명,타가이방편지응용우불동류형적개념궤모형,차고산정도만족개념설계계단적수요.
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.