Helical length and pitch online calculator



App description

The calculation formula of the spiral:

\(p=√[ \frac {l^2}{n^2} - π^2d^2]\)

\(l=n√[p^2+(πd)^2]\)

In the formula:

n - the number of spirals

P——pitch

l——Spiral length

D——parameter

Spiral: In the plane polar coordinate system, if the polar diameter ρ increases (or decreases) proportionally with the increase of the polar angle θ, the trajectory formed by such a moving point is called a spiral.

The most common spirals are Archimedes spirals, logarithmic spirals, and hyperbolic spirals.

Pitch, the axial distance between the corresponding points on two adjacent teeth on the thread.

Pitch in RC/helicopter model: The distance of the spiral formed by one revolution of the same blade during the rotation of the propeller.

Usage example

Input data:

N—number of spirals: 8

P-pitch: 4

L—spiral length: 6

D—parameter: 3

Click "Calculate" to output data

Spiral length: 81.907

 

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