Mechanical Engineering Commons^™

Tractor Museum Committee Minutes October 20, 1998, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Treasurer's Report State Fair Report Accident Insurance

Nebraska Tractor Test Museum Committee Minutes July 21, 1998, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

State Fair Planning Camp Creek Threshers First Newsletter

The Optimized Electrostatic Motor, Christopher Lee Rambin

Doctoral Dissertations

The most common means of electrically activated actuation is the electromagnetic motor. All electromagnetic motors have a low output to weight ratio and low energy efficiency. The motor's weight is due to the coils and magnets used to generate propulsion. The energy loss is mainly the result of Joule heating that is inherent with any current driven device. An electrostatic motor offers the potential of significantly less weight and higher energy efficiency. This lower weight characteristic is due to the epoxide material used to construct the major components of its propulsion unit. Greater efficiency results from the reduced Joule heating …

Vortex Wake And Exhaust Plume Interaction, Including Ground Effect, Ihab Gaber Adam

Mechanical & Aerospace Engineering Theses & Dissertations

Computational modeling and studies of the near-field wake-vortex turbulent flows, far-field turbulent wake-vortex/exhaust-plume interaction for subsonic and High Speed Civil Transport (HSCT) airplane, and wake-vortex/exhaust-plume interaction with the ground are carried out. The three-dimensional, compressible Reynolds-Averaged Navier-Stokes (RANS) equations are solved using the implicit, upwind, Roe-flux-differencing, finite-volume scheme. The turbulence models of Baldwin and Lomax, one-equation model of Spalart and Allmaras and two-equation shear stress transport model of Menter are implemented with the RANS solver for turbulent-flow modeling.

For the near-field study, computations are carried out on a fine grid for a rectangular wing with a NACA-0012 airfoil section and …

Minutes Of The June 23, 1998 Meeting Of The Friends Of The Tractor Test Museum, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Updated Membership Listing Foundation Budget Ageless Iron Article

Nebraska Tractor Test Museum Committee Minutes April 14, 1998, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Treasurer's Report Preparation for Dedication Fund Raising Issues

Reduction Of Thermal Deflection And Random Response Of Composite Structures With Embedded Shape Memory Alloy At Elevated Temperature, Zhiwei Zhong

Mechanical & Aerospace Engineering Theses & Dissertations

A feasibility study on the reduction of thermal deflection and random response of the composite structures using shape memory alloys (SMA) at elevated temperatures is presented in this dissertation. The characteristics of SMA are introduced and the structural problems, static and dynamic, of SMA fiber reinforced composites are investigated. The stress-strain relations are developed for a composite lamina with embedded SMA fibers. The finite element system equations including shape memory effect are derived. A consistent two-step solution procedure is developed for solving the static and dynamic problems of composite structures with embedded SMA fibers subjected to combined acoustic and thermal …

Nebraska Tractor Test Useumcommittee Minutes March 10, 1998, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Hitchcock Foundation Big Red Collectors Dedication of Museum

Tractor Test Museum Committee February 10, 1998, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Heating Issues Handouts for visitors Big Red Club

Nebraska Tractor Test Museum Committee Minutes January 20th, 1998, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Roof Repair Big Red Convention Dedication Ceremony

An Investigation Using The Finite Element Method Into Bowing & Lean Of The 3rd Stage Turbine Blade Of The Pratt & Whitney Jt8d Gas Turbine Engine, Kevin O'Donoghue

Theses

Following a recent series of failures of overhauled third stage turbine blades in the JT8D- 15A gas turbine engine, new inspection criteria have been introduced by the engine manufacturer Pratt & Whitney. One such inspection checks for airfoil bowing and lean. A blade will bow or lean towards the suction face of the airfoil as a result of creep during engine operation. Third stage turbine blades from the JT8D low pressure turbine have been observed with as much as two millimetres of deflection measured at mid-span. In a geometrically correct T3 blade, the tensile centrifugal load due to engine rotation …

Development Of A Geothermal Heat Pump Test Facility, Chris Collins

Theses

Current environmental concerns have led to large scale research and development in the area of alternative energy supplies. The alternative energy system of interest in this study is the heat pump. Heat pumps extract heat from a variety of sources such as air, water and the earth, upgrade and transmit it to the required location. The aim of this thesis is to develop mathematical and experimental models to evaluate the performance of a heat pump which uses the earth as its thermal source. These models will then form the basis of design aids for installers sizing closed loop collection systems …

Electromagnetic Scattering From Coated Strips Utilizing The Adaptive Multiscale Moment Method, C. Shu, T. K. Sarkar

Electrical Engineering and Computer Science - All Scholarship

The aim of this paper is to consider the problem of electromagnetic scattering from perfectly conducting strips coated with thin dielectric material by use of the adaptive multiscale moment method (AMMM). In the next section, the basic formulation is presented for analysis of scattering from coated conducting strips on the basis of a coupled system of electric- and magnetic-field integral equations. Section 3 outlines the computational methodology of the multiscale basis by use of the moment method. Section 4 presents AMMM to solve the coupled EM integral equations. Section 5 presents a variety of numerical examples for different coating strips …

Virtual Reality Modelling Of A Cnc Machine, Damian O'Sullivan

Theses

The increasing importance of training and upgrading skills has led to the use of new interactive technologies in the development of more effective training tools. Previous techniques for training Computer Numerical Control (CNC) machine operators, while excellent for their time, varied from brief inexpensive tutorials to expensive on the job training. A CNC machine uses a computer to perform the functions of the machine using a part program stored in the memory of the computer. This thesis describes a Virtual Reality (VR) model of a CNC milling machine, implemented within a VR environment representing a CNC workshop. Its development and …

Tractor Test Museum Commttee Minutes November 19th, 1997, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Update on Roof Progress Big Red Club State Fair Project

Tractor Test Museum Commttee Minutes May 20th, 1997, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Officer Elections Foundation Funds State Fair Discussions

Development Of Curved-Plate Elements For The Exact Buckling Analysis Of Composite Plate Assemblies Including Transverse-Shear Effects, David Michael Mcgowan

Mechanical & Aerospace Engineering Theses & Dissertations

The analytical formulation of curved-plate non-linear equilibrium equations including transverse-shear-deformation effects is presented. The formulation uses the principle of virtual work. A unified set of non-linear strains that contains terms from both physical and tensorial strain measures is used. Linearized, perturbed equilibrium equations (stability equations) that describe the response of the plate just after buckling occurs are then derived after the application of several simplifying assumptions. These equations are then modified to allow the reference surface of the plate to be located at a distance z_c, from the centroidal surface. The implementation of the new theory into the …

Tractor Test Museum Committee Minutes Jan 28, 1997, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Foundation Budget Recognition Certificates By-law changes

1995 Strategic Plan For Museum, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Roof Repair Contacting Tractor Manufacturers Inviting Donors to be Members

Tractor Test Museum Committee Minutes December 11, 1996, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Roof Repair Inviting Donors to be Members Treasurer's Report

Proposal For Renovation Of 1920 Tractor Test Lab Into Museum, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Bids for Renovating Roof State Fair Display Further Funding for Renovation

1995 Strategic Plan For Museum, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Check from Mr. Gerst Letter from Dr. Omtvedt Plan for Renovation Decision to Replace Roof Estimate from Landscaping

Tractor Test Museum Committee Minutes August 11, 1995, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Bid for Roof Replacement National Historic Site Additional Support

Tractor Test Museum Committee Minutes April 21, 1995, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Hitchcock Foundation Potential Committee Member Tree Removal

Tractor Test Museum Committee Meeting March 17th, 1995, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Camp Creek Threshers Foundation Funds 1915 Ford tractor restoration

Wiping Out Tall Weeds, Brad Rayner

Journal of the Department of Agriculture, Western Australia, Series 4

Control of weeds is an on-going battle for farmers, with many weapons becoming increasingly expensive. A refreshing exception to this trend is the blanket wiper, a cheap but effective meens of applying herbicides to taller weeds in pasture. Brad Rayner explains how it works.

Minutes Friends Of Tractor Test Museum November 1994, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Subcommittee Structure Hitchcock foundation

Model T Project Progress Report 1994, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Model T Restoration

Minutes Friends Of Tractor Test Museum October 1994, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Building Lease Student Employees Ted Worral Collection

Minutes Friends Of Tractor Test Museum Aug. 1994, Tractor Museum

Lester F. Larsen Tractor Museum: Planning and Development Documents

Hitchcock Foundation Tax exempt status Solicit members