Solid Edge How do the parameters of a compound Helical Curve behave?

The creation of a compound Helical Curve is a bit complex and also the input of the parameters may lead to unexpected results,  Therefore, it would help to explain how the compound Helical Curve with the 
creation method "Length and Pitch" works.
 

Solution

Creating a compound Helical Curve with method "Length and Turns" requires the following parameters:
(indicated in red)

In the Points Table the editable value in the white fields determine the creation method - here Length and Pitch - so the Turns are the calculated results.

As you can see in the image above, the length between the inserted Points is incremented constantly by 120 mm and also the Pitch between the points is always a difference of 20 mm, the calculated number of Turns are not fixed as the user expects. 

Here is the formula in how we calculate the number of turns:
 
# Turn N = (Length N – Length N-1)/ ((Pitch N + Pitch N-1)/2)
 
Now looking at the table:


# Turns 1 = 0
# Turns 2 = (120-0)/((40+20)/2)=4
# Turns 3 = (240-120)/((60+40)/2)=2.4
# Turns 4 = (360-240)/((40+60)/2)=2.4
# Turns 5 = (480-360)/((60+40)/2)=2.4
# Turns 6 = (600-480)/((40+20)/2)=2.4
 
As one can see, the number of turns for each point matches.  The table is showing the cumulative number of turns, while the calculation above is giving the number of turns between points.

Hardware/Software Configuration

Platform: na
OS: windows
OS Version: n/a
Product: SOLID_EDGE
Application: PART/SHEETMETAL
Version: V221.0
Function: CURVE

Ref: 002-8528064