archimedes spiral
5.We have obtained fast generation algorithms for ellipse, parabola, hyperbola, Archimedes spiral, logarithmic spiral, and probability curve arcs with increments and properly-chosen parameter equations.
6.At first the antenna is an ultra?wideband double-armed Archimedes spiral antenna and fed by 50 ohm coaxial-cable.
7.This article deals specially with the determination of the, basic parameters of involute cylinder gears,Archimedes spiral worms and worm wheels when measuring them.
8.The influence of Archimedes spiral curve interpolation on machining precision is analyzed, for the fact that the actual cutter path among the programmed points in the machining of spiral rod is Archimedes spiral curve. On the basis of that, the factors such as the step among the programmed points ,the radius of cutter cirque and the fixed angle of cutter are discussed, the primary factors of influencing machining precision are the section profileof work-piece and the step among the programmed points.
9.The research works with scientific projects are divided into two parts in this thesis. an ultra?wideband double-armed Archimedes spiral antenna at 1.5~12GHz is made in the first part. a kind of compound spiral antenna at 0.4~6GHz is developed in the second part.
10.On the base of analyzing the ground of flow and structure of cyclone,a new type of cyclone of using Archimedes spiral structure was invented,and its structure properties were discussed.
