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Simultaneous Reflection And Transmission Measurements Of Scandium Oxide Thin Films In The Extreme Ultraviolet, Guillermo Acosta, David Allred, Steven Turley
Simultaneous Reflection And Transmission Measurements Of Scandium Oxide Thin Films In The Extreme Ultraviolet, Guillermo Acosta, David Allred, Steven Turley
Utah Space Grant Consortium
This project intends to study thin films of scandium oxide in the extreme ultraviolet. The goal is to experimentally determine the EUV optical constants for scandium oxide thin films, so that the optical performance of these films can be accurately described. These constants are necessary to supplement the analysis of the performance of scandium thin films, and will also provide insight into the potential use of scandium oxide thin films in future coating schemes.
Spectral Estimates Of The Troposhere Using Least Squares And Maximum Likelihood, Stan Wellard, Doran Baker
Spectral Estimates Of The Troposhere Using Least Squares And Maximum Likelihood, Stan Wellard, Doran Baker
Utah Space Grant Consortium
Given the significant cost and effort required to field infrared sensors capable of cutting-edge performance, each step of the development process, from experiment concept to calibrated sensor, must be optimized to insure maximum quality in the final processed data. This is particularly important if the final data is to be used as a basis for decisions about the properties of future sensors or for claims about the characteristics of the Troposphere. The spectra estimation process depends critically on how well the technique anticipates and models the operational properties of the system, how well the optical and electrical characterizes of the …
Physiologic Response To Microgravity, Benjamin Randall, Dwayne Westenskow
Physiologic Response To Microgravity, Benjamin Randall, Dwayne Westenskow
Utah Space Grant Consortium
Physiology in microgravity is a challenging field of research because of limited resources. Though humans have been in space for 50 years most meaningful data has been collected only within the last 15 years. While expensive studies with small sample sizes make obtaining and interpreting data difficult, some general conclusions about the human physiological response to microgravity can be drawn. A redistribution of bodily fluids is believed to initiate change in cardiovascular and respiratory function. The mechanisms for these changes have been studied very little are not well understood. Long term effects of microgravity on the body have been impossible …
Satellite-Based Correlation Studies Of Mesospheric O2 And Oh Infrared Emissions, Brandon Thurgood, Doran Baker
Satellite-Based Correlation Studies Of Mesospheric O2 And Oh Infrared Emissions, Brandon Thurgood, Doran Baker
Utah Space Grant Consortium
The Mesosphere and Lower Thermosphere/Ionosphere (MLTI) plays an important role in the energy balance of the Earth-Sun planetary system. The SABER (Sounding of the Atmosphere using Broadband Emission Radiometry) instrument on NASAs TIMED (Thermosphere Ionosphere Mesosphere Energetics and Dynamics) satellite is a spatially scanning 10-channel infrared radiometer. To aid in the modeling of the photo-chemical dynamics that take place in the MLTI region, a series of correlations concerning three radiometric airglow bands of SABER are explored. The three bands of interest are O2(14g), OH(9-7;8-6) and OH(5-3), centered at wavelengths of 1.27, 2.06 and 1.64 μm, respectively. It was found that …
Development Of An Acoustic Energy Density Probe Calibrator, Jonathan Oldham, Jonathan Blotter
Development Of An Acoustic Energy Density Probe Calibrator, Jonathan Oldham, Jonathan Blotter
Utah Space Grant Consortium
An acoustic energy density probe is a sensor that uses multiple pressure transducers to measure acoustic energy density. Calibrating each pressure transducer an acoustic energy density probe at the same time is a difficult problem because the pressure transducers have a unique location and orientation. Two main issues arise that are involved in simultaneous calibration. The first issue is a uniform pressure issue. It arises from subjecting each microphone on the probe to the same known source at the same time because pressure is a function of distance and direction. The second issue is a seal issue. It arises from …
Early Development Of An Energy Density Probe Calibrator, Scott Woolston, Jonathan Blotter
Early Development Of An Energy Density Probe Calibrator, Scott Woolston, Jonathan Blotter
Utah Space Grant Consortium
BYU has recently developed an inexpensive energy density probe. It lacks, however, a simple effective broadband calibrator. The purpose of this research is to develop a simple calibrator, capable of calibrating all of the microphones on the energy density probe simultaneously over the frequencies 0 to 1 kHz.
X-Ray Photoelectron Spectroscopy To Examine Molecular Composition, Amy Baker, Liz Strein, Steve Turley
X-Ray Photoelectron Spectroscopy To Examine Molecular Composition, Amy Baker, Liz Strein, Steve Turley
Utah Space Grant Consortium
The extreme ultraviolet (EUV) spectrum is becoming increasingly important. Its most promising applications include lithography for integrated circuits, space-based astronomy, and medical microscopes. Unfortunately, the optical constants of materials, particularly heavy metals, in this range are not well known. This work examines the molecular composition and oxidation rate and depth of thorium. Most of our data is collected through the use of X-ray Photoelectron Spectroscopy (XPS). XPS utilizes the photoelectric effect to obtain data about the exact composition of our material. X-rays are directed at the surface in question, colliding with and dispelling electrons from different energy levels of atoms. …
Using Thermochromic Materials For Mobile Space Suit Heating Applications, Andrew Ning
Using Thermochromic Materials For Mobile Space Suit Heating Applications, Andrew Ning
Utah Space Grant Consortium
In past research we investigated and proposed the use of an intermediate environment [2]. It is termed an intermediate environment because it has the pressure of the living quarters but uses plentiful Martian air as the ambient. The use of an intermediate environment can solve the pressure requirement effectively. An intermediate environment pressurized with Martian air would provide sufficient external pressure, allowing the use of a thinner, light-weight suit. The astronauts would need oxygen or mixed gas masks, but would not need their bulky outside suits to provide counter pressure. This will allow improved mobility, dexterity, visibility and astronaut energy …
Design And Construction Of A Misse-6 Payload: State Of Utah Space Environment & Contamination Study (Suspecs), Joshua L. Hodges, Jeff Duce, Jr Dennison
Design And Construction Of A Misse-6 Payload: State Of Utah Space Environment & Contamination Study (Suspecs), Joshua L. Hodges, Jeff Duce, Jr Dennison
Utah Space Grant Consortium
No abstract provided.
Motivations And Methods For Developing Nonlinear Near-Field Acoustic Holography, Micah Shepherd, Kent Gee
Motivations And Methods For Developing Nonlinear Near-Field Acoustic Holography, Micah Shepherd, Kent Gee
Utah Space Grant Consortium
Understanding the acoustic field radiated by finite-amplitude sources such as rockets and jets can be important for assessing the impact on involved structures and surrounding communities. Near-field acoustic holography techniques, based on linear equations, do not account for nonlinear behavior. A nonlinear study of the acoustic near-field is described using the general time domain algorithm. This algorithm accounts for all nonlinear phenomena involved. Nonlinear metrics, the bispectrum and Howell-Morfey nonlinearity indicator are being used to quantify the amount of nonlinear interactions occurring in the near-field. Analysis using these metrics is shown.
A Numberical Vortex Approach To Aerodynamic Modeling Of Suav/Vtol Aircraft, Doug F. Hunsaker, Deryl Snyder
A Numberical Vortex Approach To Aerodynamic Modeling Of Suav/Vtol Aircraft, Doug F. Hunsaker, Deryl Snyder
Utah Space Grant Consortium
A numerical lifting line method, coupled with a numerical blade element method, is presented as a low computational cost approach to modeling slipstream effects on a finite wing. This method uses a 3D vortex lifting law along with known 2D airfoil data to predict the lift distribution across a wing in the presence of a propeller slipstream. The results are of significant importance in the development of an aerodynamic modeling package for initial stages of vertical takeoff and landing (VTOL) aircraft design. An overview of the algorithm is presented, and results compared with published experimental data.
E-Field Dependent Conduction In Low Density Polyethelene, Jerilyn Brunson, Jr Dennison
E-Field Dependent Conduction In Low Density Polyethelene, Jerilyn Brunson, Jr Dennison
Utah Space Grant Consortium
Measurements of the resistivity of low density polyethylene (LDPE) samples of varying thickness have been made using the standard constant voltage method to explore electric field dependence using conduction mechanisms developed for amorphous solids and semi-conductors. Resistivity is related to carrier mobility within the bulk. Where electrons are the primary charge carriers, their mobility is dependent on their probability of hopping between trapping sites treated as potential wells. A series of constant voltage measurements at constant temperature show that LDPE follows the Poole-Frenkel theory of field-enhanced conduction at low applied fields.
Active Minimization Of Acoustic Energy Density To Attenuate Radiated Noise From Enclosures, Andrew Boone, Jonathan Blotter
Active Minimization Of Acoustic Energy Density To Attenuate Radiated Noise From Enclosures, Andrew Boone, Jonathan Blotter
Utah Space Grant Consortium
The noise produced by mechanical equipment can be an annoyance as well as a health and safety concern. One application where noise reduction has become important is in diesel power generators. Two methods for the reduction of noise exist: passive and active noise control. In this project active noise control (ANC) is applied to the problem of noise radiating from diesel generator enclosures. The purpose of this research is to show that the active minimization of energy density within an enclosure can lead to a global reduction of the externally radiated noise. Two underlying questions will be answered in this …