horizontal surface


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horizontal surface

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A specified portion of the horizontal plane located 150 ft above the established airport elevation, which establishes the height above which an object is determined to be an obstruction to air navigation. The perimeter of the horizontal surface is constructed by swinging the arcs of specified radii from the center of each end of the primary surface of each runway of each airport and connecting the adjacent arcs by lines tangent to those arcs.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
At horizontal surfaces ([beta] = 0), elevation angles of multipath signals with delays within the conditions above can be represented as
The Equivalent Offset for Horizontal Surface. Firstly, we introduce the equivalent offset concept for a horizontal surface and the derived formula.
To evaluate the applicability and the accuracy of the collected models in estimating monthly average daily global solar radiation values on a horizontal surface, a long-term of measured daily global solar radiation data are used.
Data for snails crawling on a vertical surface were collected between September and November, 2014; data for snails crawling on a horizontal surface were collected between March and May, 2015.
Extraterrestrial Radiation on a horizontal Surface.
The docking unit allows the Cable Capture to attach to any vertical or horizontal surface. With the Cable Capture, cords and cables from multiple components are no longer a tangled mess on the floor.
Intermittent contacts with a wall and a horizontal surface are computed and modeled, respectively.
Despite the differences in horizontal surface area described in the previous section, changing the size of the circular neighbourhood does not have a marked influence on the altitudinal range occupied by sub-horizontal denudation surfaces; however, such surfaces do become progressively more pronounced as the size of the circular neighbourhood increases.
The test is performed on the Crush Tester, the same as the resistance test of the horizontal surface of the board; only, the device is set at another measuring mode.
Formulated to be used on any concrete horizontal surface indoors and outdoors such as patios, porches, garage and basement floors, Drylok E1 creates a semi-gloss finish and is available in four colors--Slate Gray, Light Platinum, Natural Sand and Arctic White.
Horizontal surface winds fed the insatiable fire by transporting fuel into the whirlwind, heating the air, enhancing its buoyancy, and increasing the whirlwind circulation.
This design is for a building whose every horizontal surface is covered with planting.

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