摘要
本文介绍了运用计算机辅助几何设计方法,为可调螺距螺旋桨的性能论证、分析而建立的采集处理螺旋桨几何数据及图形显示系统。该系统可提供桨叶上任一叶切面和径向切面的数据、桨叶自转后新切面的数据及桨叶上任一点空间坐标,用以对桨叶的加工和检验。同时在系统中进行了桨叶曲面的造型和消隐,使人们可以从屏幕上观察到螺旋桨桨叶转到各指定位置的三维图象。
In this paper Controllable Pitch(C.P.)propeller as the background is used and a sys-
tem is established which can generate the propeller's geometric data by the means of compu-
ter aided geometric design.This system can also provide the data of the cylindrical and radial
section of the propeller blade,as well as the C.P.propeller blade having been rotated an arbi-
trary angle(i.e.,changed its pitch).It is necesary for computing the propeller's performance
and can also provide the date of any point on the surface of the propeller blade for making
and checking the propeller.Also,including blade modeling and hidden line elimination in the
system,it makes possible to watch the 3-D image of blade on the computer screen.
出处
《工程图学学报》
CSCD
1993年第1期90-95,共6页
Journal of Engineering Graphics
关键词
螺旋桨
螺距
桨叶
设计
propeller
controllable pitch propeller
blade
computer aided geometric design
hidden line
