DEVELOPMENT AND FABRICATION OF ANTENNA GROUP AN/GRA,

Abstract

A ground system for Antenna Group AN/GRA was de veloped after extensive testing at three antenna test sites where the following soil conditions prevail: (1) rocky, low conductivity soil, (2) rich, sandy-loam soil, and a compromise of (1) and (2). The physical, electrical, and mechani cal characteristics of the ground system were determined. It was concluded to use a counter poise or ungrounded system that would provide a minimum of losses and ease of installation for field conditions. Weight reduction studies were conducted to bring the system weight in line withthat of the Signal Corps Specification. This s accomplished by the elimination of nonessential components. It was concluded to eliminate one of the two hydraulic pumps. This reduced the ef ficiency of the hydraulic system somewhat, but was within specifications. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1963
Accession Number
AD0411333

Entities

People

  • F.c. Carpenter

Tags

DTIC Thesaurus Topics

  • Conductivity
  • Elimination
  • Field Conditions
  • Ground Control Stations
  • Specifications
  • Weight
  • Weight Reduction

Readers

  • Geotechnical Engineering.
  • Phased Array Antenna Design.
  • Systems Analysis and Design