Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Aerospace Engineering (128)
- Physical Sciences and Mathematics (37)
- Physics (35)
- Education (5)
- Electrical and Computer Engineering (5)
-
- Science and Mathematics Education (5)
- Applied Mechanics (4)
- Computer-Aided Engineering and Design (4)
- Other Mechanical Engineering (4)
- Materials Science and Engineering (3)
- Nuclear Engineering (3)
- Arts and Humanities (2)
- Computational Engineering (2)
- Computer Engineering (2)
- English Language and Literature (2)
- Fluid Dynamics (2)
- Heat Transfer, Combustion (2)
- Library and Information Science (2)
- Literature in English, British Isles (2)
- Manufacturing (2)
- Social and Behavioral Sciences (2)
- Aerodynamics and Fluid Mechanics (1)
- Biomechanical Engineering (1)
- Civil Engineering (1)
- Civil and Environmental Engineering (1)
- Computer Sciences (1)
- Electromagnetics and Photonics (1)
- Environmental Sciences (1)
- Keyword
-
- Aerodynamics (12)
- CFD (12)
- Design (11)
- Optimization (11)
- Thermal conductivity (9)
-
- Turbulence (8)
- Computational Fluid Dynamics (6)
- DIC (6)
- Digital Image Correlation (6)
- Fluid dynamics (6)
- Heat transfer (6)
- Hybrid (6)
- Sonic boom (6)
- Water (6)
- Aircraft (5)
- Efficiency (5)
- Simulation (5)
- Spacecraft (5)
- Aerodynamic (4)
- Airfoil (4)
- Algae (4)
- Biofuel (4)
- Composite (4)
- Composites (4)
- Engineering (4)
- Error (4)
- Microalgae (4)
- Model (4)
- PIV (4)
- Strain (4)
- Publication Year
- Publication
-
- All Graduate Theses and Dissertations, Spring 1920 to Summer 2023 (182)
- Mechanical and Aerospace Engineering Faculty Publications (70)
- Undergraduate Honors Capstone Projects (29)
- Utah Space Grant Consortium (28)
- All Graduate Plan B and other Reports, Spring 1920 to Spring 2023 (25)
-
- Mechanical and Aerospace Engineering Student Publications and Presentations (24)
- Education and Outreach (13)
- Reports and Proposals (8)
- Presentations (6)
- Browse all Datasets (5)
- All Graduate Theses and Dissertations, Fall 2023 to Present (4)
- Fall Student Research Symposium 2020 (3)
- Nick Roberts (3)
- Research on Capitol Hill (2)
- Course Materials (1)
- Engineering Datasets (1)
- Erin Davis (1)
- Fall Student Research Symposium 2021 (1)
- Funded Research Records (1)
- Library Faculty & Staff Publications (1)
- Mechanical and Aerospace Engineering Capstone Projects (1)
- Posters (1)
- Student Research Symposium (1)
- Publication Type
- File Type
Articles 391 - 411 of 411
Full-Text Articles in Mechanical Engineering
Time-Resolved Piv And Pressure Measurements Of Oscillating And Pulsating Flow In A Diffuser, Cameron V. King
Time-Resolved Piv And Pressure Measurements Of Oscillating And Pulsating Flow In A Diffuser, Cameron V. King
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Separating oscillating and pulsating flows in an internal adverse pressure gradient geometry are studied experimentally. Simultaneous velocity-pressure measurements demonstrate that the minor losses associated with oscillating flow in an adverse pressure gradient geometry can be smaller or larger than for steady flow. Separation is found to begin high in the diffuser and propagate downward. Flows are able to remain attached further into the diffuser with larger Reynolds numbers, larger stroke lengths, and smaller diffuser angles. The extent of separation grows with L0/h. The minor losses grow with increasing displacement amplitude in the range 10 < L0/h …
Estimating The Subsonic Aerodynamic Center And Moment Components For Swept Wings, W. F. Phillips, Doug F. Hunsaker, R. J. Niewoehner
Estimating The Subsonic Aerodynamic Center And Moment Components For Swept Wings, W. F. Phillips, Doug F. Hunsaker, R. J. Niewoehner
Mechanical and Aerospace Engineering Faculty Publications
An improved method is presented for estimating the subsonic location of the semispan aerodynamic center of a swept wing and the aerodynamic moment components about that aerodynamic center. The method applies to wings with constant linear taper and constant quarter-chord sweep. The results of a computational fluid dynamics study for 236 wings show that the position of the semispan aerodynamic center of a wing depends primarily on aspect ratio, taper ratio, and quarter-chord sweep angle. Wing aspect ratio was varied from 4.0 to 20, taper ratios from 0.25 to 1.0 were investigated, quarter-chord sweep angles were varied from 0 to …
Photoelectric Charging By Ultraviolet Light Of A Lunar Dust Simulant In A Microgravity Environment, Microgravity Research Team 2008
Photoelectric Charging By Ultraviolet Light Of A Lunar Dust Simulant In A Microgravity Environment, Microgravity Research Team 2008
Reports and Proposals
No abstract provided.
A Numerical Blade Element Approach To Estimating Propeller Flowfields, Doug F. Hunsaker
A Numerical Blade Element Approach To Estimating Propeller Flowfields, Doug F. Hunsaker
Mechanical and Aerospace Engineering Faculty Publications
A numerical method is presented as a low computational cost approach to modeling an induced propeller flowfield. This method uses blade element theory coupled with momentum equations to predict the axial and tangential velocities within the slipstream of the propeller, without the small angle approximation assumption common to most propeller models. The approach is of significant importance in the design of tail-sitter vertical takeoff and landing (VTOL) aircraft, where the propeller slipstream is the primary source of air flow past the wings in some flight conditions. The algorithm is presented, the model is characterized, and the results (including the results …
The Effects Of Charging By Ultraviolet Light On Granular Lunar Simulant In A Microgravity Environment, Sydney J. Chamberlin, Troy Munro, Sarah Isert, Tracy Garin Savage
The Effects Of Charging By Ultraviolet Light On Granular Lunar Simulant In A Microgravity Environment, Sydney J. Chamberlin, Troy Munro, Sarah Isert, Tracy Garin Savage
Reports and Proposals
No abstract provided.
A Lifting-Line Approach To Estimating Propeller/Wing Interactions, Doug F. Hunsaker, Deryl O. Snyder
A Lifting-Line Approach To Estimating Propeller/Wing Interactions, Doug F. Hunsaker, Deryl O. Snyder
Mechanical and Aerospace Engineering Faculty Publications
A combined wing and propeller model is presented as a low-cost approach to first-cut modeling of slipstream effects on a finite wing. The wing aerodynamic model employs a numerical lifting-line method utilizing the 3D vortex lifting law along with known 2D airfoil data to predict the lift distribution across a wing for a prescribed upstream flowfield. The propeller/slipstream model uses a blade element theory combined with momentum conservation equations. This model is expected to be of significant importance in the design of tail-sitter vertical take-off and landing (VTOL) aircraft, where the propeller slipstream is the primary source of air flow …
Utilization Of Ultrasonic Consolidation In Fabricating Satellite Decking, Joshua L. George
Utilization Of Ultrasonic Consolidation In Fabricating Satellite Decking, Joshua L. George
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A fundamental investigation of the use of ultrasonic consolidation (UC) to produce deck panels for small satellites was undertaken. Several fabrication methods for producing structural panels and decking were analyzed. Because of its ability to create aluminum objects in an additive fashion, and at near-room temperatures, UC was found to be a powerful solution for creating highly integrated and modular satellite panels. It also allowed a lightweight and stiff deck to be fabricated without the use of adhesives.
A series of experiments were performed to understand the issues associated with creating a sandwich-type structure using UC. The experiments used a …
Driveline For The Usu 2006 Mini Baja, Daniel Chase Swenson
Driveline For The Usu 2006 Mini Baja, Daniel Chase Swenson
Undergraduate Honors Capstone Projects
The Mini Baja project is part of an intercollegiate engineering design competition sponsored by SAE. For this competition senior engineering students at USU design and build a small off-road racecar. The design of the car is broken up into several different subassemblies. The driveline subassembly is responsible for transmitting the power from the transmission to the rear wheels. This is accomplished using several different components that have all been analyzed and designed. The completed driveline is able to accommodate sixteen inches of suspension travel, is lightweight, and was inexpensive to build. The driveline along with the rest of the car …
Design Of 'Iris', A Small Autonomous Surveillance Uav, Jennifer Boyce, Ryan Carr, Donovan Chipman, Greg Larson, Nathan Hopkins, Doug F. Hunsaker, W. Jerry Bowman
Design Of 'Iris', A Small Autonomous Surveillance Uav, Jennifer Boyce, Ryan Carr, Donovan Chipman, Greg Larson, Nathan Hopkins, Doug F. Hunsaker, W. Jerry Bowman
Mechanical and Aerospace Engineering Faculty Publications
This paper documents the design process used for a small autonomous surveillance UAV. The most significant requirements for the plane were size (man-packable), endurance (about 1 hour) and cost (essentially disposable). The plane that resulted, named "Iris", is a tailless plane with a 45 cm wing span and a total mass of less than 200g. During flight tests, it achieved an endurance of 52 minutes. The estimated cost to manufacture the planes was $343, excluding the autopilot.
Thermoacoustic Refrigerator, Nathan A. Hammond
Thermoacoustic Refrigerator, Nathan A. Hammond
Undergraduate Honors Capstone Projects
Thermoacoustic refrigerators have typically been designed to cool an isolated working fluid, necessitating a heat exchanging device to draw heat from the outside target fluid into the cooled working fluid. For example, a thermoacoustic refrigerator designed to chill air might utilize argon as an isolated working fluid, necessitating a heat exchanger to draw heat from the air to the argon. A second heat exchanger would be required to draw heat from the argon to a cold sink.
A design team at Utah State University has created a thermoacoustic refrigerator which uses air at atmospheric pressure as its working fluid. By …
The Wright Stuff: A Redesign Of The 1905 Wright Flyer, Adam Richards, Ben Case, Eric Peterson, Nathan Holman, Wayne Goodrich, Amy Hintze, Carson Esplin, David Christensen, Jonathan Holfeltz, Nick Filimoehala, Nicholas Alley
The Wright Stuff: A Redesign Of The 1905 Wright Flyer, Adam Richards, Ben Case, Eric Peterson, Nathan Holman, Wayne Goodrich, Amy Hintze, Carson Esplin, David Christensen, Jonathan Holfeltz, Nick Filimoehala, Nicholas Alley
Mechanical and Aerospace Engineering Capstone Projects
No abstract provided.
Design Of The Guidance, Navigation, And Control Subsystem For The Proposed Firebird Spacecraft, Erin Robinson
Design Of The Guidance, Navigation, And Control Subsystem For The Proposed Firebird Spacecraft, Erin Robinson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The Firebird spacecraft is a space mission to gather scientific and physical data on the effects of atmospheric deceleration, commonly called aerobraking. The objective of the Firebird mission is to measure specified aerobraking parameters over a range of reentry velocities to provide a database sufficient to construct and validate mathematical models of such aerobraking mission maneuvers. The Firebird senior design team designed the first spacecraft in the mission series to look at aerobraking at an altitude of 160 kilometers above the surface of the Earth. This paper looks specifically at the design of the subsystem that provides the guidance, navigation, …
Remote Freedom, Dominic M. Florin
Remote Freedom, Dominic M. Florin
Undergraduate Honors Capstone Projects
Increasing mobility is a key to ensuring that a disabled child feels accepted and as normal as possible. The object of Remote Freedom is to provide an inexpensive design that will modify a toy vehicle so that it can run remotely. The case that we designed for was a child with cerebral palsy. Originally the toy vehicle on the market needed major modifications both for the safety of the child and the addition of the remote control The main components that were added were a safety harness, a roll bar and motors to control steering and speed.
It was discovered …
Dual Adaptive Recumbent Trike, Jason V. Eastman
Dual Adaptive Recumbent Trike, Jason V. Eastman
Undergraduate Honors Capstone Projects
The DART team's objective was to develop a tandem recumbent tricycle that would be economical, easy to build, and adaptable. This would involve designing, building and testing the tricycle.
Research And Design Of A High L/D Aircraft, Blake Ashby, Gregory Nielson
Research And Design Of A High L/D Aircraft, Blake Ashby, Gregory Nielson
Undergraduate Honors Capstone Projects
This senior design team, consisting of Blake Ashby, Shelly Barlow, Greg Nielson, Deryl Snyder, and Chris Wright, designed, built, and flew an airplane that met the requirements of the Cessna/ONR Student Design/Build/Fly Competition sponsored by AIAA. This radio-controlled airplane was designed to fly the most laps around a course in seven minutes using only 2.5 pounds of NiCad batteries. A total of three senior design teams from Utah State University designed separate airplanes. Though all three teams designed, built, and tested complete airplanes, each emphasized a different aspect of a successful entry. This team emphasized theoretical and numerical analysis in …
Freezing Point Mobile Munitions Assessment Sytem: Thermal Chamber Redesign, Sara Gifford, Preston Harris
Freezing Point Mobile Munitions Assessment Sytem: Thermal Chamber Redesign, Sara Gifford, Preston Harris
Undergraduate Honors Capstone Projects
The Army is actively investigating non-intrusive methods to identify six chemical weapons agents. The chemical munitions in question are often found scattered across military bases and other facilities. These non-stockpile munitions are specifically targeted for identification using the mobile munitions assessment system. This program is being administered by the Idaho National Engineering Laboratory.
Optimization Of Torquer Coil Design For Use With The Small Satellite Attitude Control Simulator, David Deloyd Anderson
Optimization Of Torquer Coil Design For Use With The Small Satellite Attitude Control Simulator, David Deloyd Anderson
Undergraduate Honors Capstone Projects
This paper presents a procedure used to optimize the performance of a ferromagnetic core magnetic torquer coil design for use on the Space Dynamics Laboratory (Logan, UT) Small Satellite Attitude Control Simulator. The items of optimization include the primary goal of maximizing the coil 's magnetic moment while reducing power consumption and system mass within given power, mass, and dimensional constraints. The optimization process makes use of several simple equations to determine a few starting points for design, after which an iterative approach based on experimentation is used to produce the final design. It is found that optimal magnetic moment …
Advanced Rover Chassis, Eric Alan Poulson, Collin Lewis, Todd Graves
Advanced Rover Chassis, Eric Alan Poulson, Collin Lewis, Todd Graves
Undergraduate Honors Capstone Projects
Background:
The six wheeled rover vehicle detailed in this design is intended as an upgrade test bed for the sensor array and autonomous navigation algorithms in use by Utah State University's Center for Self-Organizing and Intelligent Systems (CSOIS). The CSOIS's sensor suite can successfully detect and avoid unnavigable obstacles up to five vehicle lengths in front of the vehicle. The center presently uses a modified RC type chassis and only supports two wheel drive. This chassis was adequate to bring the CSOIS's algorithms to a proof-of-principles state, but in order to place the system in any practical application, a full …
Final Design Report Of The Design Of A Climate Controlled Sleeping Chamber For Infants And Toddlers, Jennifer Stenger Stevens
Final Design Report Of The Design Of A Climate Controlled Sleeping Chamber For Infants And Toddlers, Jennifer Stenger Stevens
Undergraduate Honors Capstone Projects
A climate controlled sleeping chamber, or air crib, for infants and toddlers is an alternative sleeping medium to the conventional crib. It is a chamber that is ventilated with air that is temperature and humidity controlled to provide an optimum sleeping environment for young children, ages 0 to 2 years. Its purpose is to enhance the psychological and physiological development of young children. Because it is easier to heat a small chamber than larger living quarters, the air crib also has economic advantages.
The design o climate controlled sleeping chamber must meet some minimum requirements. The system must provide an …
A Thermal Energy Storage Tank Model For Solar Heating, Robert Arthur Pate
A Thermal Energy Storage Tank Model For Solar Heating, Robert Arthur Pate
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The results of a combined theoretical and experimental study of the kinetics of a hot-liquid energy-storage tank are presented. A physical model is developed which accurately describes the thermal stratification behavior in a storage tank. The governing differential equations are developed for the physical model. A numerical solution to the system of equations is presented. Some existing models were examined and the predicted results of each are discussed. The concepts developed can be used to predict the thermal stratification behavior in a storage tank under most conceivable operating conditions. These conditions include flow configurations at the top and the bottom …
The Formation And Properties Of Machining Burrs, Laroux K. Gillespie
The Formation And Properties Of Machining Burrs, Laroux K. Gillespie
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The formation of burrs in Machining Operations occurs by three Basic Mechanisms:
1) Lateral Extrusion of material
2) Bending of the chip
3) Tearing of the chip form the workpiece
Each of these mechanisms has been studied analytically and compared to experimental results. The agreement between predictions and measurements has been found to be close.
Drilling, milling, grinding, and turning burrs were produced in 303Se stainless steel and their properties were related to tool geometry, feedrates, and depth of cut. One thousand measurements were made and subsequently analyzed by analysis of variance techniques. The properties measured include burr length and …