# conical surface

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## conical surface:

see conecone
or conical surface,
in mathematics, surface generated by a moving line (the generator) that passes through a given fixed point (the vertex) and continually intersects a given fixed curve (the directrix).
.

## conical surface

[′kän·ə·kəl ′sər·fəs]
(mathematics)
A surface formed by the lines which pass through each of the points of a closed plane curve and a fixed point which is not in the plane of the curve.

## conical surface

A surface extending from the periphery of the horizontal surface outward and upward at a slope of 20 horizontal to 1 vertical for a horizontal distance of 4000 ft. It is an imaginary surface, in which any object that projects above the surface is considered an obstruction to air navigation.
References in periodicals archive ?
The transmitter trajectory is determined by the intersection line formed by [L.sub.T] and the conical surface. If the transmitter moves with a fixed altitude, [L.sub.T] is parallel with the ground plane, which leads to a hyperbola trajectory as shown in Figure 5.
The last software tool proposed in this paper refers to the utilisation of a secondary optics in the furnace: in particular Simulation Tool_3 (ST_3) allows introducing a polar conical surface as secondary optics of the collection system.
Because of the fact the intersection is both the spherical and conical locus we can indicate the identically equivalent circle of the spherical one on the flattened conical surface but of different properties e.g.
Then again checking-up of quality of conical bottom follows so that the conical surface would not be damaged in any place.
A CNC3[n] nanocones consists of a triangle as its core and encompassing the layers of hexagons on its conical surface. If there are n layers of hexagons on the conical surface around triangle, then we number n denotes the number of layers of hexagons and number in the subscript shows the sides of polygon which acts as the core of nanocones.
The flight trajectory intersected by plane y = [y.sub.0] and conical surface forms an ellipse as analyzed in Appendix A.
* InspF Cylindrical or conical surface represents a product mating where just feature own geometry participates in the functional chain.
The tool moves by oscillating motion in direction parallel with the axis of this cylindrical surface that can cause the damage of the created conical surface even before the superfinishing.
The current point coordinates of the curve placed on the truncated conical surface, A(x,y,[z.sub.A]) may be deduced using the Fig.3 and the following relations:

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