File:Bell telephone magazine (1922) (14776480613).jpg

Identifier: belltelephonemag22amerrich (find matches)
Title: Bell telephone magazine
Year: 1922 (1920s)
Authors: American Telephone and Telegraph Company American Telephone and Telegraph Company. Information Dept
Subjects: Telephone
Publisher: (New York, American Telephone and Telegraph Co., etc.)
Contributing Library: Prelinger Library
Digitizing Sponsor: Internet Archive

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
onstration at Murray Hill, President Oliver E. Buckley of theLaboratories (left) and Major General L. H. Campbell, Chief of Ordnance, manipu-late the tracker as Dr. David B. Parkinson, originator of the concept, looks on How the Device Operates Sighting the target is done bymeans of a tracker. Two operatorspeer into telescopes, one on eitherside of the unit, and hold the crosshairs on the moving target by operat- cross hairs on the target—which maybe rapidly changing its elevation.He thus determines the elevationangle. These two angular positions,which fix the direction of the targetfrom the tracker, are automatically 1943-44 Electric Brain 261 and instantaneously converted intoelectrical terms by the device andtransmitted to the computer. In order to determine the exactposition of the plane in space, the and controls, considers the presentposition of the target as well as itsmovement; and from the changes inthe targets position, the computer de-termines the point in space where the
Text Appearing After Image:
NEWARK STAR LEDGER Two SOLDIERS operate the computer which automatically aims the guns and sets the shell fuzes. For a description of how the units pictured on this and the opposite pages function, refer to the diagram on page 258 range—straight-line distance—to thetarget must be added to the informa-tion provided by the tracker. Thisis done by means of a height or rangefinder and an associated altitude con-verter. While the tracker and the heightfinder continuously sight the target,the electrical data from these instru-ments are sent over cables to the elec-trical brain, the computer. This com-plex device of electrical circuits, dials. plane will be at the moment a shell,fired at any instant, will reach it. One of the most important func-tions of the computer is to make cor-rections for the ballistics of the gunand the outside forces acting upon theshell, such as gravity and wind. Asshown in the diagram on page 258,the computer must consider all ofthese factors and come up with a

Note About Images