Spherical Helix
The Tangent Indicatrix of a Curve of Constant Precession is a spherical helix. The equation of aspherical helix on a Sphere with Radius 
making an Angle 
with the 
-axis is
 |  |  | (1) |
 | |  | (2) |
 | |  | (3) |
The projection on the
-plane is an Epicycloid with Radii | |  | (4) |
 | |  | (5) |
See also Helix, Loxodrome, Spherical Spiral
References
Scofield, P. D. ``Curves of Constant Precession.'' Amer. Math. Monthly 102, 531-537, 1995.
- Ellipsoidal Harmonic
- Ellipsoidal Harmonic of the First Kind
- Ellipsoidal Harmonic of the Second Kind
- Ellipsoid Geodesic
- Elliptic Alpha Function
- Elliptical Projection
- Elliptic Cone
- Elliptic Cone Point
- Elliptic Curve
- Elliptic Curve Factorization Method
- Elliptic Curve Group Law
- Elliptic Curve Primality Proving
- Elliptic Cylinder
- Elliptic Cylindrical Coordinates
- Elliptic Delta Function
- Elliptic Exponential Function
- Elliptic Fixed Point (Differential Equations)
- Elliptic Fixed Point (Map)
- Elliptic Function
- Elliptic Functional
- Elliptic Geometry
- Elliptic Group Modulo p
- Elliptic Helicoid
- Elliptic Hyperboloid
- Elliptic Integral