back beam

back beam

A localizer with both front beam and back beam.
back beam
No change in back bearing in this case as the aircraft is flying directly south.
A reciprocal beam on the other side of a transmitter and on a reciprocal heading, as in an ILS (instrument landing system) localizer. Aircraft on a back beam may not have glide-path information.
back bearing
i. The horizontal angle, measured clock-wise from a datum, and observed from an aircraft for a point over which it has passed without an intervening alteration of a heading. It is the reciprocal of track.
ii. A bearing differing by 180°, or measured in the opposite direction from a given bearing. Also called a reciprocal bearing.
iii. The bearing at the opposite end of a line from the observer as measured from the true meridian at the opposite end of the line. The back bearing on all lines (other than north-south lines) differs from the bearing at the observer's station by the amount of convergency of the meridians between the two points.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
This watch had a leather band with white stitching and a few studs with both standard clock face and digital with back beam light in blue.
Accessories that rock, hard!
Cut the front and back beam members with ends angled 8 degrees.
Do-it-yourself porch swing: everyone needs a cozy spot to relax and sip some iced tea, and this plan works even if you don't have a porch!
Rosa also made use of a ceramic tile that looks like slate, which covers the raised back beam and waterline.
The unsung heroes: Pool & Spa News celebrates great design for less than 60,000ドル
During this process, back beams are processed on the dyeing and sizing machine instead of rope.
In the first stage, back beams are dyed, oxidized, dried and wound on a batch roll.
A tow hook is mounted on the front and back beams so the tractor can be hooked to a car or truck via a tow strap and pulled to fresh ground.
'Tractors' make raising pastured pigs easy
Two more run between the front and the back beams. After these are in place, add the 2-1/2-in.
Shed plus shelter
There was no shortage of lenders willing to back Beams, which is always a good early indicator of business success."
ENTERPRISE: Success is crepe-ing up on new city catering outlet
The back beams in the same batch must be wound so that their length is exactly the same so as to minimism waste during sizing, since the batch must be finished as soon as the first beam is empty during sizing.
KARL MAYER provides new points of reference
shorter than the side beams and fasten it to the posts and the front and back beams (E) with 3-in.
SIZE & DESCRIPTION A 6 3-1/2" x 3-1/2" x 56" treated posts B 24 3/4" x 3-1/2" x 32" treated post shims C 6 7-1/2" x 98" round columns D 12 1-1/2" x 5-1/2" round discs (column inserts) E 2 1-1/2" x 9-1/4" x 185" front and back beams F1 2 1-1/2" x 9-1/4" x 145-1/2" side beams F2 1 1-1/2" x 9-1/4" x 142-1/2" center beam G 4 3/4" x 1-1/2" x 142-1/2" ledger strips H 16 1-1/2" x 7-1/4" x 91-3/4" flat rafters J 23 1-1/16" x 3" x 33" tail tops K 23 1-1/2" x 9-1/4" x 17" decniative tails L1 8 1-1/16" x 3" x 153" lattice strips L2 1 1-1/16" x 3" x 134" center lattice strips * M 4 3/4" x 3-1/2" x 91 3/4" fascia strips * N 18 3/4" x 3-1/2" x 14-1/2" fascia strips P 24 1-1/2" x 2-1/4" x 12-1/4" sub- base (under molded base) * Cut to fit Buyer's Guide

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