Teleport: New Wave Engineering
Between $600 and $700 million will be spent on teleports now being planned in the U.S., presenting interesting challenges to civil engineers. Just as airports and seaports serve as collection...

Hollow Conic Shell Foundation and Calculation

Crossing Statistics of Mast Antenna Structures

Optimization of Antenna Structure Design

A Simplified Simulation of Guyed Towers. P-Delta Analysis

Reliability of Antenna Structures

Big New Radio Telescope Array Listens in on Space
The world's most powerful radio telescope is so sensitive that it can detect a small CB rig operating on a distant planet. The Very Large Array (VLA) Radio Telescope Facility...

Probing Concrete with Radio Waves
Electromagnetic probing can be used to assess the integrity of concrete cofferdam seals. Data are taken using high-frequency transmitter and receiver antennas installed in separate boreholes...

Energy From Space
Patented by Peter Glaser in 1973 the solar power satellite is a concept still mindboggling to some. It is a satellite orbiting 22,300 miles (35,800 km) above earth in geosynchronous orbit....

Digital Generation of Alongwind Velocity Field
The loss of surface efficiency performance of a paraboloidal reflector antenna results from various sources. In particular, the surface deformation from its ideal paraboloidal shape due...

Computer Design of Antenna Reflectors
Performance of a paraboloidal antenna reflectors is adversely influenced by surface distortions from a perfect paraboloid, which causes path length variations of the RF energy beam. The...

Computation of Cutting Lengths of Guys
A method is presented for computing the cutting lengths of cable segments used as guys for antennas and transmission towers. The analysis takes into account both concentrated and distributed...

World's Largest Log-Periodic Antenna
Detailed descriptions of the structural system, design criteria, fabrication of the antenna elements, fiberglass road assemblies, asbestos-cement pressure pipe towers and epoxy joints...

Performance of Foundation for Altair Radar
The foundation for the ALTAIR antenna is a ring beam with a diameter of 118 ft, founded upon coral sand. Loads are applied to the foundation at four points; these points move around the...

Unique Solution for Difficult Rigging Problem
The antenna network of aluminum conductors consists of a series of concentric triangles. The erection was accomplished without ground contact of the conductors. The solution consisted...

Minimum Weight Design of Enclosed Antennas
The minimization of the total weight of the tiltable component of an enclosed antenna structure with a given topology and a given initial design subject to relative deformation constraints...

Design and Response of the Supporting Structure for a Large Tracking and Receiving Antenna

Structural Analysis of the Haystack Antenna
The Haystack Antenna is a fully steerable parabolic antenna 120 ft in diameter. The surface of this antenna must remain within ± 0.075 in. of a true paraboloid. A summary is presented...

Computer Design of a Tower and Cable System
Three computer programs were developed and used in the design of a large very-low-frequency (VLF) antenna system consisting of a network of cables supported on the tops of an array of...

Dynamics of A Large Streerable Radio Telescope Antenna
An analytical model having a moderate number of degrees of freedom was formulated in order to represent approximately the dynamic behavior of a large steerable radio telescope antenna...

 

 

 

 

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