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The Use of Compensation With Directional Couplers

Description: Abstract: The accurate measurement of voltage standing wave ratio (VSWR) is of prime importance in the production of microwave systems. The work reported in this memorandum was undertaken in the development of a faster system for measuring VSWR.
Date: January 1961
Creator: Lincoln, Roland Alan
Partner: UNT Libraries Government Documents Department
open access

Wind Tunnel Study of the Influence of Orifice Geometry and Flow Rates on the Measured Pressure Error of a Static Pressure Probe at Mach 3

Description: Abstract: Tests were conducted in the Jet Propulsion Laboratory's 20-inch Supersonic Wind Tunnel to determine the effect of hole-spacing geometry on the measured pressure error due to "breathing" for a pressure-sensing probe at Mach 3.01.
Date: November 1960
Creator: Zumwalt, Glen W.
Partner: UNT Libraries Government Documents Department
open access

A Transistorized Reactivity Measurement System

Description: An all-transistor system has been developed to be used in measuring the reactivity of the reactor in the Sandia Engineering Reactor Facility. In operation, the system triggers a pulsed neutron source (PNS) in the reactor and counts the resulting neutron flux, thus giving a measure of the time constant of the reactor. The counting is done in eleven time-sequenced counting channels. The reactor time constant is a measure of the reactor reactivity.
Date: July 6, 1960
Creator: Ehrman, Leonard
Partner: UNT Libraries Government Documents Department
open access

Vapor Pressures of the Rare Earths

Description: Abstract: This report presents the vapor pressures versus temperature data graphically for the rare earth elements, yttrium and scandium.
Date: August 2, 1960
Creator: Beavis, L. C.
Partner: UNT Libraries Government Documents Department
open access

An Aid to Printed Circuit Layouts Using the IBM-704 Computer

Description: Abstract: This memorandum presents the possible applications and instructions for using REDCROSS, an IBM-704 computer program.
Date: June 1960
Creator: Stearns, Samuel D. & O'Connell, R. A.
Partner: UNT Libraries Government Documents Department
open access

APOTA (Automatic Positioning of Telemetering Antennas)

Description: This report presents a description of and operating instructions for APOTA--a device which automatically tracks any signal-emitting source within the 190 to 250 MC band. APOTA is especially useful for telemetering applications.
Date: September 14, 1955
Creator: Palmer, James E.; Crawley, T. V. & Lannon, J. T.
Partner: UNT Libraries Government Documents Department
open access

Prediction of Shock Response

Description: Abstract: A method is presented of predicting the shock response of a friction-damped vibratory system.
Date: November 1960
Creator: Barba, Peter M.
Partner: UNT Libraries Government Documents Department
open access

A Pulse Ammeter

Description: A quantizing pulse ammeter has been designed which brackets an input pulse current peak between two preset current levels. These levels are easily selected by calibration circuits contained on the chassis. Readout is presented in the form of a Nixie visual display as well as an output which is suitable for automatic data recording.
Date: August 1961
Creator: Newman, J. J.
Partner: UNT Libraries Government Documents Department
open access

A High-Voltage Pulse Generator for Testing Dielectric Samples

Description: Abstract: The purpose of this report is to describe the problems inherent to general dielectric strength measurements, and to act as a guide in establishing a method for pulse dielectric strength measurements.
Date: July 13, 1960
Creator: Kelly, R. D.
Partner: UNT Libraries Government Documents Department
open access

High Velocity Shock Testing, Equipment and Methods

Description: The need for special high velocity shock testing is pointed out and equipment that has been developed to meet these needs is discussed. The concept of velocity-change and its importance in shock-testing technology is brought out. The three types of equipment discussed are: accelerated drop testers, pneumatic actuators, and air guns. Examples of each type and their capabilities and limitations are presented.
Date: July 11, 1960
Creator: Walker, Walter W.
Partner: UNT Libraries Government Documents Department
open access

Vapor Pressures of the Rare Earths

Description: Abstract: This report presents the vapor pressures versus temperature data graphically for the rare earth elements, yttrium and scandium.
Date: December 23, 1960
Creator: Beavis, L. C.
Partner: UNT Libraries Government Documents Department
open access

Automatic Tester for Electrical Fuses

Description: Abstract: This technical memorandum describes an automatic tester and recorder as it is used in obtaining fusing time information from electrical fuses for subsequent analysis in the IBM 704 computer.
Date: November 1961
Creator: Longerot, Carl D.
Partner: UNT Libraries Government Documents Department
open access

Air-Gun Studies of Ferroelectric Materials (Second Printing)

Description: Specimens of two ferroelectric materials, barium titanate and lead-zirconate titanate, have been subjected to high dynamic stresses by impacting them with a projectile accelerated by an air gun. The purpose of these tests was to supplement information previously obtained using high explosives to stress the ferromagnetic materials.
Date: February 6, 1958
Creator: Ripperger, E. A. & Beck, A. F.
Partner: UNT Libraries Government Documents Department
open access

Phantom Gage Dimensioning (Combined Part/Gage specifications)

Description: Abstract: This memorandum discusses a new design definition technique, requiring no standard, which pictorially shows part and gage limits on the same drawing. When functional gages, test fixtures, or optical chart gages are the selected inspection method, design, manufacturing process, and gage engineers can use these drawings directly to replace the usual standards-based drawings. In essence, this advanced technology visually describes true position dimensioning and tolerancing. It enables pr… more
Date: July 1964
Creator: Roth, E. S.
Partner: UNT Libraries Government Documents Department
open access

Curves for Estimating Low Blast Over-Pressure

Description: A plot of overpressure versus distance is presented for the fractional psi pressure level. The plot provides a rapid and simple means of estimating the permissible yield at any distance from settled areas.
Date: April 1958
Creator: Vortman, Luke J.
Partner: UNT Libraries Government Documents Department
open access

Calibration of a Peak Current Gage Developed at Sandia Corporation

Description: Abstract: Methods are presented for calibrating a peak current gage which was developed at Sandia in the spring of 1953.
Date: December 28, 1953
Creator: Baker, G. E.; Looney, T. C.; Pafford, W. B. & Reis, George E.
Partner: UNT Libraries Government Documents Department
open access

IBM Problem M Curves

Description: Abstract: Presented here are working graphs of pressure, density, velocity, and temperature from the Los Alamos Scientific Laboratory calculations (IBM Problem M) of a spherically symmetric explosion in a homogeneous atmosphere.
Date: June 29, 1960
Creator: Broyles, C. D.
Partner: UNT Libraries Government Documents Department
open access

Shock Signatures and Spectra from Railroad Switching Loads

Description: Abstract: This report describes two tests made to obtain data on the loads that equipment is subjected to during railroad switching.
Date: January 1961
Creator: Adams, P. H.
Partner: UNT Libraries Government Documents Department
open access

Note on the Numerical Evaluation of Integrals of the Form [integral] [superscript infinity] [subscript infinity] f(x) [golden ratio constant] (x) dx, with Particular Reference to the Determiniation of the Expectation of a Function of a Normally Distributed Random Variable

Description: Abstract: A method is given for the rapid and accurate numerical integration of integrals of the form [integral] [superscript infinity] [subscript infinity] f(x) [golden ratio constant] (x) dx, where f(x) is "smooth."
Date: May 24, 1960
Partner: UNT Libraries Government Documents Department
open access

A Digital Comparator

Description: A digital comparator has been designed to flag data which goes above a maximum limit or below a minimum limit.
Date: September 21, 1960
Creator: Bourgeois, N. A., Jr.
Partner: UNT Libraries Government Documents Department
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