102 Matching Results

Results open in a new window/tab.

Determination of Required Component Reliability from System Reliability Requirements (open access)

Determination of Required Component Reliability from System Reliability Requirements

The primary purpose of this study was to find a method for establishing component reliability requirements from system reliability specifications, because component reliability requirements are presently arbitrarily and vaguely defined.
Date: March 3, 1960
Creator: Breipohl, A. M.
System: The UNT Digital Library
Computation of the Dipole Moment of a Coaxial Antenna in Sea Water (open access)

Computation of the Dipole Moment of a Coaxial Antenna in Sea Water

The short-circuit coaxial antenna in a lossy medium is analyzed using transmission line theory.
Date: July 1963
Creator: Reinman, R. B. & Williams, R. H.
System: The UNT Digital Library
Re-entry Flight Demonstration Number One (RFD-1): Atmospheric Sciences Support (open access)

Re-entry Flight Demonstration Number One (RFD-1): Atmospheric Sciences Support

Abstract: Data from the atmospheric sciences support systems for RFD-1 on May 22, 1963, at Bermuda Island, are presented. These data were taken for purposes of later analysis of the ballistic performance of the re-entry vehicle and of the heat transfer mechanisms within it, and for studies of the motion of ablated particles in the atmosphere.
Date: October 1964
Creator: Coonce, C. A.
System: The UNT Digital Library
Ejecta from Single-Charge Cratering Explosions: Volume 1 (open access)

Ejecta from Single-Charge Cratering Explosions: Volume 1

"Eight high-explosive charges weighing 8 to 1000 pounds were detonated in playa. Each event included 24 to 40 locations of tracer material in the expected crater region. The objective was to obtain data relating the origin of crater ejecta to its depositional location. Resulting data are presented for craters, ejecta areal densities, crater and ejecta mass quantities, tracer dispersion, and an empirical prediction model."
Date: June 1970
Creator: Carlson, Roland H. & Newell, Robert T.
System: The UNT Digital Library
Tolerance Comparator (open access)

Tolerance Comparator

The following report describes the design and intended function of the tolerance comparator device, a tool designed to aid those engaged in the manufacture and inspection of parts as defined by drawings using positional tolerances.
Date: November 1969
Creator: Nicovich, P. A.
System: The UNT Digital Library
Tolerance Comparator (open access)

Tolerance Comparator

The following report describes the purpose and usage of the tolerance comparator, and Sandia Corporation's investigation of the drafting practice leading to the aid.
Date: August 1959
Creator: Nicovich, P. A.
System: The UNT Digital Library
SOLSTOR Description and User's Guide (open access)

SOLSTOR Description and User's Guide

Abstract: This report describes the computer simulation code SOLSTOR. The code simulates energy systems in which electricity is generated by either a photovoltaic (PV) system or a wind turbine generator (WTG). Storage may or may not be present. Backup electricity, if needed, is provided either from a utility grid or from a fuel-burning generator. SOLSTOR minimizes the life cycle cost of providing energy by choosing the optimal solar or wind system component sizes. Rates for electricity purchased from the grid can include time-of-day (TOD) energy charges as well as time-of-day peak demand changes. Sell-back to the grid of excess collected energy is also considered.
Date: March 1981
Creator: Aronson, Eugene A.; Caskey, David L. & Caskey, Bill C.
System: The UNT Digital Library
The Sandia APAR-3G system: Automatic Programming, Recording, and Control for Development and Production Testing (open access)

The Sandia APAR-3G system: Automatic Programming, Recording, and Control for Development and Production Testing

Abstract: The APAR-3G system is an automatic programming, controlling and recording machine which is readily adaptable to a wide variety of automated data acquisition and constrol system applications. It is physically and logically modular to permit the assemby of minimum or maximum capability machines. This system can perform the necessary acquisition and control in a typical factory environment and can generate an output (for data reduction) which is compatible with available computer systems.
Date: December 1963
Creator: Roberts, R. W.
System: The UNT Digital Library
Project SAND Final Program Report: Volume 1 (open access)

Project SAND Final Program Report: Volume 1

This report presents a summary of all the SAND (Sampling of Aerospace Nuclear Debris) ballistic vehicle firings, and an analysis of the first SAND sampler flight test.
Date: 1965
Creator: Matejka, D. Q. & Wood, W. L.
System: The UNT Digital Library
Spectrographic Analysis of Plasmajets: Progress Report 2 (open access)

Spectrographic Analysis of Plasmajets: Progress Report 2

Abstract: This is the second progress report on the work performed at Sandia Corporation in the use of spectrographic techniques in plasmajet diagnostics. Typical results of spectrographic data from argon and nitrogen plasmajets are included. For the argon jet, the results from line intensity measurements of ionized and unionized atoms generally give good information. However, results from hydrogen line broadening measurements indicate several unexplained discrepancies. For the nitrogen jet, the N2 (0, 0) and N2 (0, 1) bands from the first negative series were used to determine a rotational temperature.
Date: March 1963
Creator: Shipley, K. L.
System: The UNT Digital Library
Microbarograph Evaluation Report (open access)

Microbarograph Evaluation Report

From introduction: This report describes the procedures used and the results obtained in evaluating the Wiancko type 3-PBM-2 microbarograph system.
Date: September 3, 1959
Creator: unknown
System: The UNT Digital Library
Estimating Safety Probabilities from Fallout Forecasts for Nevada Test Site (open access)

Estimating Safety Probabilities from Fallout Forecasts for Nevada Test Site

Abstract: "Available data on wind persistence and wind forecasting capability have been applied in estimating the probability of a fallout pattern shifting from an uninhabited safe sector into a populated region. Safety probability is computed from win variability, forecasting accuracy, initial height and particle size of radioactivity landing at a point in the predicted fallout pattern, predicted wind speed, length of forecast period, and safe-sector angular width."
Date: July 1, 1960
Creator: Reed, Jack W.
System: The UNT Digital Library
A Study of Nevada Test Site Wind Variability (open access)

A Study of Nevada Test Site Wind Variability

Abstract: "Wind observations collected at Yucca Flat since 1951 are analyzed for timewise variability. Variability functions of altitude, season, wind speed, and vector wind are described. Derived variability parameters are incorporated into calculations of fallout safety probability for NTS operations."
Date: July 1, 1960
Creator: Reed, Jack W.
System: The UNT Digital Library
Experimental Pressure Distributions and Force Coefficients on Block Forms for Varying Mach Number, Reynolds Number, and Yaw Angle (open access)

Experimental Pressure Distributions and Force Coefficients on Block Forms for Varying Mach Number, Reynolds Number, and Yaw Angle

Abstact: "Wind tunnel tests were performed to determine pressure distributions and normal force coefficients on three block forms on mounting planes. The dimension ratios of the blocks were 1:1:1, 1:1:2, and 1:1:4. Results are given for variation in Mach number from 0.066 to 0.8, in Reynolds number from 0.28 x 10(exp 6) to 4 x 10(exp 6), and in yaw angle from 0 to 90 degrees. Results show a Reynolds number independence over the range examined. Windward face force coefficients for a given block form are approximately proportional to the ratio of impact to dynamic pressure. Pressure distribution and resultant coefficients are affected by mounting planes."
Date: January 1959
Creator: Hankins, Dorris M.
System: The UNT Digital Library
An Exploding Wire as a Fuse for the LASL Capacitor Bank--Zeus (open access)

An Exploding Wire as a Fuse for the LASL Capacitor Bank--Zeus

Abstract: "An exploding copper wire, one millimeter in diameter, 30 centimeters long, has been developed as a fuse component for a Los Alamos capacitor energy source to be employed in controlled thermonuclear research studies. The fuse allows the passage of the high normal duty "action" (13,700 ampere-coulombs per capacitor) at a 20-second repetition rate. However, it interrupts the circuit to a shorted capacitor in 12 microseconds, thereby protecting the faulted capacitor from explosive energy consumption. The initial phase of the development included observations of various metals (copper, silver, iron, and nickel) as well as various configurations (straight wires, helixes, foils, and tubes). Direct scaling of previous small exploding wire studies at Sandia Corporation was demonstrated with scaling factors up to 700,000."
Date: June 4, 1959
Creator: Cnare, Eugene C.
System: The UNT Digital Library
Interim Report on Investigation of Dynamic Characteristics of Relays: June-July 1959 (open access)

Interim Report on Investigation of Dynamic Characteristics of Relays: June-July 1959

From scope of work: This report investigates the dynamic characteristics of sealed military type relays as affected by applied coil voltage and/or current, temperature, spring tension, contact force, contact overtravel, and mechanical clearances.
Date: September 1959
Creator: unknown
System: The UNT Digital Library
Experimental Determination of the Pressure Drop Through a Pebble Bed (open access)

Experimental Determination of the Pressure Drop Through a Pebble Bed

Abstract: "The pressure drop associated with the flow of air through a cylindrical bed of spherical pebbles has been investigated experimentally. The results of this investigation are reported here."
Date: September 1959
Creator: Randall, D. E. & Millwright, S. S.
System: The UNT Digital Library
A Method of Calculating Boundary-Layer Thickness in Axisymmetric Nozzles with Laminar Hypersonic Flow (open access)

A Method of Calculating Boundary-Layer Thickness in Axisymmetric Nozzles with Laminar Hypersonic Flow

Abstract: "The excellent agreement between measured boundary layer thickness and thickness calculated by Sivells and Payne recommends their method for calculating turbulent boundary layer growth in axisymmetric hypersonic nozzles. It was thought worthwhile to adapt their approach to the laminar boundary layer. This analysis, along with a limited amount of corroborating data, is presented herein."
Date: October 1959
Creator: Johnson, Arlo F.
System: The UNT Digital Library
Interim Report on Investigation of Dynamic Characteristics of Relays: September-October 1959 (open access)

Interim Report on Investigation of Dynamic Characteristics of Relays: September-October 1959

From scope of work: This report investigates the dynamic characteristics of sealed military type relays as affected by applied coil voltage and/or current, temperature, spring tension, contact force, contact overtravel, and mechanical clearances.
Date: January 1960
Creator: unknown
System: The UNT Digital Library
Comparison of Fallout Doses from Nevada Tests (Revised) (open access)

Comparison of Fallout Doses from Nevada Tests (Revised)

From abstract: Many residents of the Nevada area carried film badge radiation dosimeters during Operation Plumbbob in 1957. Badge readings in specific localities appear to follow the logarithmic-normal distribution.
Date: June 1960
Creator: Reed, Jack W.
System: The UNT Digital Library
Design and Construction of a Unit for Measuring Metal Skin Temperatures (open access)

Design and Construction of a Unit for Measuring Metal Skin Temperatures

From summary: This report concerns the theoretical evaluation and experimental development of special thermocouples capable of being accurately located at or near the surface of metal structures to permit measurement of temperature distribution through the strictures.
Date: February 1961
Creator: Advanced Technology Laboratories
System: The UNT Digital Library
High-Explosive Ditching from Linear Charges (open access)

High-Explosive Ditching from Linear Charges

Abstract: "Weights of linear high-explosive charges fired on the Yucca Lake playa of the Nevada Test Site varied from 0.23 to 42.7 pounds per foot. Crater and ditch dimensions and volumes resulting from these shots, fired during the fall of 1959 and spring of 1960, are presented here as a function of charge burst depths. Scaling relationships determined are as expected; i.e., square-root scaling of linear-charge weight per foot for ditch width and depth and a direct linear-charge weight relationship to ditch volume are obtained. Permanent ground surface displacement varies as the -3.22 power of the scaled distance from the charge. Detonation effects, charge shape effects, ditch erosion, and ditch cross sections are discussed. The appendixes present Toboggan data, results of soil investigation, and mathematical treatment given the data."
Date: July 1961
Creator: Carlson, R. H.
System: The UNT Digital Library
Salton Sea Meteorological Instrumentation Test Series, Salton Sea, California, Conducted in September 1959 (open access)

Salton Sea Meteorological Instrumentation Test Series, Salton Sea, California, Conducted in September 1959

Abstract: "This report discusses tests conducted to determine the accuracy of meteorological equipment which is used to gather upper air data. Equipment tested was the GMD-2, SMD-1A, GMD-1B, and the WBRT-57. A four-station phototheodolite network was used as a standard for point-in-space determinations."
Date: January 1961
Creator: Jones, L. E.; Levesque, R. L., Jr.; Niper, E. D. & Willis, John T.
System: The UNT Digital Library
High Explosive Crater Studies: Tuff (open access)

High Explosive Crater Studies: Tuff

Abstract: "Spherical charges of TNT, each weighing 256 pounds, were exploded at various depths in tuff to determine apparent crater dimensions in a soft rock. No craters were obtained for depths of burst equal to or greater than 13.3 feet. It was deduced that rock fragments were sufficiently large that charges of greater magnitude should be employed for crater experiments intended as models of nuclear explosions."
Date: April 1961
Creator: Murphey, Byron F.
System: The UNT Digital Library