Engineering Commons^™

Test 652: Minneapolis-Moline 5 Star (Diesel), Nebraska Tractor Test Lab

Nebraska Tractor Tests

This report and any related files are made available to the online through the Lester F. Larsen Tractor Test and Power Museum as resources allow. Established in 1998, this museum is located on the University of Nebraska-Lincoln East Campus. It is and appropriately housed within the walls of the historic 1920 Nebraska Tractor Test Laboratory, where the first tractor test was started on March 31st, 1920. Because the pioneer tests became worldwide standards, this location was designated as a Historic Landmark of Agricultural Engineering by the American Society of Agricultural Engineers in 1980, shortly after testing was moved to a …

Determination Of Q Factors And Operating Characteristics For Microwave Cavities And Oscillations, W.P. Stearns

Electrical and Computer Engineering ETDs

This paper has as its objective the presentation of the theory involved and method used with respect to the resonant cavity parameters; loaded Q, unloaded Q, external Q, pulling figure, and circuit efficiency for the resonant cavity investigated. Experimental data on a particular cavity are discussed and the previously mentioned cavity parameters determined with the use of such data and the particular method presented. A Rieke diagram for the particular cavity investigated is also presented and discussed.

Construction Of A Heavy Duty Military Airfield On Permafrost., Owen N. O'Leary

Civil Engineering ETDs

An examination of the map of the northern hemisphere will show that the two great population areas of opposing ideologies are located across the arctic regions from each other. This fact has been recognized by the U.S. military authorities since the early 1940’s, and an effort has been made to locate military forces in these regions to act as a possible deterrent to any aggressive action. The nature and geography of this region generally preclude any military forces except combat airfield. The most outstanding and possible only example of a major military airfield located entirely on permafrost material in these …

A Portfolio Of Advanced Mining Equipment Ideas, George L. Wilhelm

Bachelors Theses and Reports, 1928 - 1970

This paper presents a series of idealized sketches and accompanying descriptions of mining equipment. The ideas contained herein apply broadly to the mechanization of underground mining and development. Considered here are new techniques of material handling, drilling, mucking and rock transportation.

The Effects Of Acid Concentration On The Current Efficiency During The Electrolysis Of Zinc Sulfate Solution, Jon Langfeldt

Bachelors Theses and Reports, 1928 - 1970

The current efficiency during the electrolysis of zinc sulfate solution and the various factors that effect the current efficiency are major considerations of this industrial process. The factors affecting current efficiency-- temperature, current density, presence of impurities, time of electrolysis, hydrogen overvoltage, smoothness of the deposit, and acid concentration of the cell solution-- are controlled to the extent that current efficiencies of 90-93% are not uncommon in the industrial electrolytic zinc process. However, additional investigations of the effects of these various factors upon current efficiency are warranted, because of the endless search by the non-ferrous metal industries for additional information …

A Study Of The Chemical Factors Affecting The Rheological Properties Of A Quartz-Bentonite Suspension In Water, Harold Bruce Treweek

Bachelors Theses and Reports, 1928 - 1970

Frequently, difficulties are encountered with mineral pulps in a mineral-processing plant, which are not alleviated or minimized by the application of such simple measures as varying fineness of grind of solid material, changing pulp density, or altering equipment operation (within practical limits). The basis of the difficulty in such a situation may be found in the very nature of the pulp-- its flow characteristics and behavior. Recognition of the problem followed by one-point viscometric measurement to determine fluidity can lead an operator to erroneous conclusions. Underlying this difficulty is the lack of technical literature concerning the application of ion exchange …

The Extraction Of Titanium From Titaniferous Magnetite, Roger N. Dokken

Bachelors Theses and Reports, 1928 - 1970

The titanium in the titaniferous magnetite under study, as well as most other titaniferous iron ores, is so intimately associated with the iron that liberation cannot be achieved by mechanical means.

It is obvious from the preliminary investigations that some chemical means must be utilized from efficient extraction of the titanium. Two possible pyrometallurgical methods for this extraction are either soda sintering or direct smelting.

The Zone-Refining Of Aluminum And Magnesium With Copper As The Major Impurity, Russell E. Hoar

Bachelors Theses and Reports, 1928 - 1970

The purpose of this paper is to report on the investigation of the possibility of removing impurities from the two important light metals, aluminum and magnesium, by applying the principles of zone-refining. The impurities in these metals are namely iron, silicon, and copper, which is the main impurity. Copper and iron come from the reduction cells, while silicon is introduced during the preparation of the material for the reduction bath.

The Zone-Refining Of Aluminum With Copper As The Major Impurity, Arlan Edward Rathke, Russell E. Hoar

Bachelors Theses and Reports, 1928 - 1970

The purpose of this paper is to report on the investigation of the possibility of removing impurities from the two important light metals, aluminum and magnesium, by applying the principles of zone-refining. The impurities in these metals are namely iron, silicon, and copper, which is the main impurity. Copper and iron come from the reduction cells, while silicon is introduced during the preparation of the material for the reduction bath.

The Reduction Of Chromium Oxide In A Vacuum Furnace, Raymond W. White

Bachelors Theses and Reports, 1928 - 1970

Interest in vacuum metallurgy has grown considerably in recent years. High vacuum techniques are of fundamental importance as research tools in defining the properties of pure metals, in the extraction and processing of reactive metals, and are becoming increasingly important in commercial metallurgical processes. Much of the work described in recent literature has centered on applications of vacuum to commercial annealing, degassing, distillation, and melting and casting processes.

Attrition-Flotation Of Low-Grade Cuban Manganese Tailings, Donald E. Zipperian

Bachelors Theses and Reports, 1928 - 1970

The primary objective of this project was to develop a process that would yield a salable product from the manganese tailings and to evaluate the economical gain that might be achieved from such a venture. From the nature of the tailings and early flotation research, it became apparent that selective flocculation and subsequent gathering of the manganese-oxide minerals into agglomerates was the key factor to be considered in the flotation testing.

Test 650: Oliver 880 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 649: Oliver 770 Diesel, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 648: Oliver 770, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 647: Oliver 880, Nebraska Tractor Test Lab

Nebraska Tractor Tests

No abstract provided.

Test 646: Case Model 511b, Nebraska Tractor Test Lab

Nebraska Tractor Tests

This report and any related files are made available to the online through the Lester F. Larsen Tractor Test and Power Museum as resources allow. Established in 1998, this museum is located on the University of Nebraska-Lincoln East Campus. It is and appropriately housed within the walls of the historic 1920 Nebraska Tractor Test Laboratory, where the first tractor test was started on March 31st, 1920. Because the pioneer tests became worldwide standards, this location was designated as a Historic Landmark of Agricultural Engineering by the American Society of Agricultural Engineers in 1980, shortly after testing was moved to a …

Life On Other Stars, Ernst Stuhlinger

Space Journal

No abstract provided.

Out-Our-Space, Rocket City Astronomical Association, Space Enterprises, Inc.

Space Journal

No abstract provided.

Mars And Beyond, Rocket City Astronomical Association, Space Enterprises, Inc.

Space Journal

No abstract provided.

Test 644: Allis-Chalmers D-17 Lpg, Nebraska Tractor Test Lab

Nebraska Tractor Tests

This report and any related files are made available to the online through the Lester F. Larsen Tractor Test and Power Museum as resources allow. Established in 1998, this museum is located on the University of Nebraska-Lincoln East Campus. It is and appropriately housed within the walls of the historic 1920 Nebraska Tractor Test Laboratory, where the first tractor test was started on March 31st, 1920. Because the pioneer tests became worldwide standards, this location was designated as a Historic Landmark of Agricultural Engineering by the American Society of Agricultural Engineers in 1980, shortly after testing was moved to a …

Beyond This Star, James L. Daniels Jr.

Space Journal

No abstract provided.

Back Matter, Rocket City Astronomical Association, Space Enterprises, Inc.

Space Journal

No abstract provided.

Rocket Mail To The Moon, Harold W. Richey

Space Journal

No abstract provided.

Father Of Rocketry, Ralph E. Jennings

Space Journal

No abstract provided.

Projecting With Space Journal, B Spencer Isbell

Space Journal

No abstract provided.

The Remarkable 'X' Craft, Frederick I. Ordway Iii

Space Journal

No abstract provided.

Front Matter, Rocket City Astronomical Association, Space Enterprises, Inc.

Space Journal

No abstract provided.

Stride Into Space, The New York Times

Space Journal

No abstract provided.

Space Journal, Vol 1, No. 2, Spring 1958, Rocket City Astronomical Association, Space Enterprises, Inc.

Space Journal

No abstract provided.

A Study Of The Use Of A Local Fly Ash In Concrete Mixes, Frank D. Whitney

Kentucky Transportation Center Research Report

The widespread use of powdered coal in industrial furnaces has, since its introduction in the 1930's, produced considerable increases in efficiency for many industrial processes. In its wake, however, it has brought its own unique problems, and chief among these has been the problem of collecting and disposing of the residue which results from the combustion of the powdered or ground coal. This residue, known commonly as fly ash, is a nuisance if it is allowed to be dispersed into the atmosphere; and if collected it presents a difficult disposal problem. In present industrial practice it is almost always collected, …