cylindrical helix

cylindrical helix

[sə′lin·drə·kəl ′hē‚liks]
(mathematics)
A curve lying on a cylinder which intersects the elements of the cylinder at a constant angle.
References in periodicals archive ?
Cylindrical helix antenna (CHA) was invented by Kraus in 1946 [23-25].
where [[zeta].sub.1] and [[zeta].sub.2] are constant coefficients; [L'.sub.T] and N are total length and turns of the equivalent cylindrical helix respectively; D' and A' are diameter and area of the equivalent loop.
If [w.sub.X] = 0 the equations of a cylindrical helix with constant pitch is obtained, and also for [w.sub.Z] = 0 an Archimedean spiral.
For the generating of a surface on machine tools, the generatrix G or the director curve D are flat analytical curves (involute, ellipse, Archimedean spiral, polygonal curves, closed contour, resulting from combinations of simple flat curves, etc.) or three-dimensional curves (cylindrical helix, cone-shaped helix, combinations of these with certain flat curves, etc.).

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