Main Type 6

This cutout is similar to type 5, but it has a top with an ellipse, consisting of three arcs with radii R4, R5 and R6, cf. the figure below. R4 and R6 are normally supposed to be smaller than R5.

Figure 2:19. Main type 6, radii.

R5 can be given explicitly.

If not given at all, it will automatically be set equal to the length of the "major axis" (W) of the top ellipse.

If option /WIDTH is given then R5=W+<xxx>, where <xxx> is the value (with sign), assigned to R5.

R4 and R6 are usually supposed to be given explicitly. However, they can also be defined as a factor times the "major axis" (W) of the top ellipse according to the following format.

Suppose that R4 (or R6) have been defined in the following way:

/WIDTH

/RAD =0.25

/R_MIN =30

WIDTH specifies that R4 should be calculated as a factor (<1) times the width (W). However, R4 should not be allowed to be smaller than 30 (R_MIN).

In this case then R4= maximum of ( 0.25*W, 30)