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Investigation Into The Effects Of Blade Tip Twist On Noise Reduction For A Naca 0012 Rotor Blade, Uyen T. Sou 2019 San Jose State University

Investigation Into The Effects Of Blade Tip Twist On Noise Reduction For A Naca 0012 Rotor Blade, Uyen T. Sou

McNair Research Journal SJSU

The advancement of the urban air mobility concept is heavily dependent on the public acceptance of the aircraft vehicles used for air taxis. The importance of the perception of noise by humans is crucial to the passing of legislation and proposals working to implement the new transport system. The investigation into how the noise perception can be reduced is vital to the success of the personal air travel industry. The air taxi design has been geared towards the rotorcraft models. Therefore, the investigation into the rotor blade designs is necessary because, similar to helicopters, the main component in noise generation ...


Challenges Of Erau’S First Suborbital Flight Aboard Blue Origin’S New Shepard M7 For The Cell Research Experiment In Microgravity (Crexim), Pedro Llanos, Kristina Andrijauskaite, Vijay V. Duraisamy, Francisco F. Pastrana, Erik Seedhouse, Sathya Gangadharan, Leonid Bunegin, Mariel Rico 2019 Embry-Riddle Aeronautical University - Daytona Beach

Challenges Of Erau’S First Suborbital Flight Aboard Blue Origin’S New Shepard M7 For The Cell Research Experiment In Microgravity (Crexim), Pedro Llanos, Kristina Andrijauskaite, Vijay V. Duraisamy, Francisco F. Pastrana, Erik Seedhouse, Sathya Gangadharan, Leonid Bunegin, Mariel Rico

Pedro J. Llanos (www.AstronauticsLlanos.com)

Cell Research Experiment In Microgravity (CRExIM) was launched aboard Blue Origin’s New Shepard suborbital vehicle on Tuesday, December 12, 2017, from the West Texas Launch Site in Van Horn, Texas. One of the aims of this science experiment was to assess the effects of microgravity on murine T-cells during suborbital flight. These cells were placed in a NanoLab with a data logger that sensed the acceleration, temperature, and relative humidity during preflight, flight, and postflight operations. Some discrepancies in sensor measurement were noticed, and these errors were attributed partly to the difference in sampling rates and partly to the ...


The Effect Of Electronic Flight Bags In Flight Training On Preflight Skill Development And Aeronautical Decision Making, Shlok Misra, Michele Halleran 2019 Embry-Riddle Aeronautical University

The Effect Of Electronic Flight Bags In Flight Training On Preflight Skill Development And Aeronautical Decision Making, Shlok Misra, Michele Halleran

Student Works

This study was designed to evaluate the effects of utilizing Electronic Flight Bags (EFBs) in flight training with emphasis on preflight skill development and Aeronautical Decision Making. The study participants were student pilots or private pilots who used EFBs in flight training and had not logged more than 100 total flight hours. The study utilized a simulation of the preflight process of a Visual Flight Rules cross-country flight in which the participants answered questions related to the flight preparation. Fifty percent of the study’s population completed this survey with the information provided through an EFB and the other 50 ...


Modifying Casting Parameters To Improve The High Temperature Ductility Of Investment Cast Nickel-Based Superalloy Pwa 1455, Lars Alexander Hedin, Cole Magnum Introligator 2019 California Polytechnic State University, San Luis Obispo

Modifying Casting Parameters To Improve The High Temperature Ductility Of Investment Cast Nickel-Based Superalloy Pwa 1455, Lars Alexander Hedin, Cole Magnum Introligator

Materials Engineering

PCC Structurals, an industry leader in superalloy investment castings, has observed inconsistencies in the stress rupture performance of polycrystalline nickel-based superalloy PWA 1455. PCC has changed their casting parameters to reduce the thermal gradient during cooling but have been unable to correlate these changes with an increase in stress rupture elongation. Metallographic examination of past samples indicated microstructures composed of non- equiaxed dendritic grains with mean diameter of .021 inches along the test axis. A similar study on polycrystalline superalloys has indicated that excessive superheat temperatures above the liquidus can result in large grains identical to those observed, limiting the ...


Sharing Airspace: Simulation Of Commercial Space Launch Impacts On Airlines And Finding Solutions, Janet K. Tinoco, Chunyan Yu, Rodrigo Firmo, Carlos Castro, Mohammad Moallemi 2019 Embry Riddle Aeronautical University - Daytona Beach

Sharing Airspace: Simulation Of Commercial Space Launch Impacts On Airlines And Finding Solutions, Janet K. Tinoco, Chunyan Yu, Rodrigo Firmo, Carlos Castro, Mohammad Moallemi

Chunyan Yu

As space vehicles travel through the national airspace systems during the launch and re-entry stages, many believe that the increasing commercial space activities will have significant impacts on commercial aviation. Airlines, in particular, are apprehensive about the immediate negative effects in terms of flight time delays, uncertainties, and costs and are increasingly expressing their concerns to government. Meanwhile, the commercial space launch industry is advancing innovation and fueling state economic growth. Hence, the safe and effective integration of commercial launch activities into airspace is of national concern. Finding an equitable solution for commercial space and for commercial airlines is clearly ...


Editorial: Special Issue: Safety & Efficiency Of Civil Aviation: Selected Papers From The World Conferences Of The Air Transport Research Society And The World Conference On Transport Society - 2013, Paul Hooper, Ian Douglas, Chunyan Yu, Stefano Paleari 2019 University of New South Wales

Editorial: Special Issue: Safety & Efficiency Of Civil Aviation: Selected Papers From The World Conferences Of The Air Transport Research Society And The World Conference On Transport Society - 2013, Paul Hooper, Ian Douglas, Chunyan Yu, Stefano Paleari

Chunyan Yu

The Air Transport Research Society (ATRS) is a Special Interest Group (SIG) of the World Conference on Transport Research Society (WCTRS). The ATRS annual World Conference was held at the University of Bergamo, Bergamo, Italy on 26-29 June 2013 and it attracted 266 papers from 37 countries. Also, the WCTRS triennial World Conference was held on 15- 18 July at Rio de Janeiro, Brazil, during which the ATRS organised several sessions devoted to air transport topics. This special issue of the Journal of Air Transport Studies has drawn upon all of this material to present four papers that promote improvements ...


Forensic Analysis Of Spy Applications In Android Devices, Shinelle Hutchinson, Umit Karabiyik 2019 Sam Houston State University

Forensic Analysis Of Spy Applications In Android Devices, Shinelle Hutchinson, Umit Karabiyik

Annual ADFSL Conference on Digital Forensics, Security and Law

Smartphones with Google's Android operating system are becoming more and more popular each year, and with this increased user base, comes increased opportunities to collect more of these users' private data. There have been several instances of malware being made available via the Google Play Store, which is one of the predominant means for users to download applications. One effective way of collecting users' private data is by using Android Spyware. In this paper, we conduct a forensic analysis of a malicious Android spyware application and present our findings. We also highlight what information the application accesses and what ...


The Impact Of Shadows On Partitioning Of Radiometric Temperature To Canopy And Soil Temperature Based On The Contextual Two-Source Energy Balance Model (Tseb-2t), Mahyar Aboutalebi, Alfonso F. Torres-Rua, Mac McKee, Hector Nieto, William Kustas, Calvin Coopmans 2019 Utah State University

The Impact Of Shadows On Partitioning Of Radiometric Temperature To Canopy And Soil Temperature Based On The Contextual Two-Source Energy Balance Model (Tseb-2t), Mahyar Aboutalebi, Alfonso F. Torres-Rua, Mac Mckee, Hector Nieto, William Kustas, Calvin Coopmans

AggieAir Publications

Tests of the most recent version of the two-source energy balance model have demonstrated that canopy and soil temperatures can be retrieved from high-resolution thermal imagery captured by an unmanned aerial vehicle (UAV). This work has assumed a linear relationship between vegetation indices (VIs) and radiometric temperature in a square grid (i.e., 3.6 m x 3.6 m) that is coarser than the resolution of the imagery acquired by the UAV. In this method, with visible, near infrared (VNIR), and thermal bands available at the same high-resolution, a linear fit can be obtained over the pixels located in ...


Estimation Of Soil Moisture At Different Soil Levels Using Machine Learning Techniques And Unmanned Aerial Vehicle (Uav) Multispectral Imagery, Mahyar Aboutalebi, L. Niel Allen, Alfonso F. Torres-Rua, Mac McKee, Calvin Coopmans 2019 Utah State University

Estimation Of Soil Moisture At Different Soil Levels Using Machine Learning Techniques And Unmanned Aerial Vehicle (Uav) Multispectral Imagery, Mahyar Aboutalebi, L. Niel Allen, Alfonso F. Torres-Rua, Mac Mckee, Calvin Coopmans

AggieAir Publications

Soil moisture is a key component of water balance models. Physically, it is a nonlinear function of parameters that are not easily measured spatially, such as soil texture and soil type. Thus, several studies have been conducted on the estimation of soil moisture using remotely sensed data and data mining techniques such as artificial neural networks (ANNs) and support vector machines (SVMs). However, all models developed based on these techniques are limited to site-specific applications where they are trained and their parameters are tuned. Moreover, since the system of non-linear equations produced by and conducted in the machine learning process ...


Estimation Of Surface Thermal Emissivity In A Vineyard For Uav Microbolometer Thermal Cameras Using Nasa Hytes Hyperspectral Thermal, And Landsat And Aggieair Optical Data, Alfonso F. Torres-Rua, Mahyar Aboutalebi, Timothy Wright, Ayman Nassar, Pierre Guillevic, Lawrence Hipps, Feng Gao, Kevin Jim, Maria Mar Alsina, Calvin Coopmans, Mac McKee, William Kustas 2019 Utah State University

Estimation Of Surface Thermal Emissivity In A Vineyard For Uav Microbolometer Thermal Cameras Using Nasa Hytes Hyperspectral Thermal, And Landsat And Aggieair Optical Data, Alfonso F. Torres-Rua, Mahyar Aboutalebi, Timothy Wright, Ayman Nassar, Pierre Guillevic, Lawrence Hipps, Feng Gao, Kevin Jim, Maria Mar Alsina, Calvin Coopmans, Mac Mckee, William Kustas

AggieAir Publications

Microbolometer thermal cameras in UAVs and manned aircraft allow for the acquisition of highresolution temperature data, which, along with optical reflectance, contributes to monitoring and modeling of agricultural and natural environments. Furthermore, these temperature measurements have facilitated the development of advanced models of crop water stress and evapotranspiration in precision agriculture and heat fluxes exchanges in small river streams and corridors. Microbolometer cameras capture thermal information at blackbody or radiometric settings (narrowband emissivity equates to unity). While it is customary that the modeler uses assumed emissivity values (e.g. 0.99– 0.96 for agricultural and environmental settings); some applications ...


Validation Of Digital Surface Models (Dsms) Retrieved From Unmanned Aerial Vehicle (Uav) Point Clouds Using Geometrical Information From Shadows, Mahyar Aboutalebi, Alfonso F. Torres-Rua, Mac McKee, William Kustas, Héctor Nieto, Calvin Coopmans 2019 Utah State University

Validation Of Digital Surface Models (Dsms) Retrieved From Unmanned Aerial Vehicle (Uav) Point Clouds Using Geometrical Information From Shadows, Mahyar Aboutalebi, Alfonso F. Torres-Rua, Mac Mckee, William Kustas, Héctor Nieto, Calvin Coopmans

AggieAir Publications

Theoretically, the appearance of shadows in aerial imagery is not desirable for researchers because it leads to errors in object classification and bias in the calculation of indices. In contrast, shadows contain useful geometrical information about the objects blocking the light. Several studies have focused on estimation of building heights in urban areas using the length of shadows. This type of information can be used to predict the population of a region, water demand, etc., in urban areas. With the emergence of unmanned aerial vehicles (UAVs) and the availability of high- to super-high-resolution imagery, the important questions relating to shadows ...


A Technology Survey Of Emergency Recovery And Flight Termination Systems For Uas, Richard Stansbury, Wesley Tanis, Timothy Wilson 2019 Embry-Riddle Aeronautical University

A Technology Survey Of Emergency Recovery And Flight Termination Systems For Uas, Richard Stansbury, Wesley Tanis, Timothy Wilson

Richard Stansbury

For safe flight in the National Airspace System (NAS), either under the current interim rules or under anticipated longer-term regulatory guidelines facilitating unmanned aircraft system (UAS) access to the NAS, the UAS must incorporate technologies and flight procedures to ensure that neither people nor property in the air, on the ground, or on or in the water are endangered by the failure of an onboard component, by inappropriate unmanned aircraft (UA) response to pilot commands, or by inadvertent entry by the UA into prohibited airspace. The aircraft must be equipped with emergency recovery (ER) procedures and technologies that ensure that ...


Safety Culture Awareness In Aviation Maintenance: Foundations To Present, Tori Kobayashi 2019 Embry-Riddle Aeronautical University

Safety Culture Awareness In Aviation Maintenance: Foundations To Present, Tori Kobayashi

Student Works

Safety Culture awareness in aviation maintenance organizations is necessary for the performance of effective maintenance and the safe operation of aircraft. Maintenance organizations that promote a strong culture of safety encourage honesty and integrity within the workplace. The environment where maintenance is performed differs from other aviation related operations. The promotion of safety in maintenance operations has been proven over time in publications written by the earliest pioneer in aviation safety, Jerome Lederer. The awareness of safety culture in aviation maintenance has evolved with the industry to the present day.


Evaluating Small Uas Operations And National Airspace System Interference Using Aeroscope, Ryan J. Wallace, Kristy M. Kiernan, Tom Haritos, John Robbins, Jon M. Loffi 2019 Embry-Riddle Aeronautical University

Evaluating Small Uas Operations And National Airspace System Interference Using Aeroscope, Ryan J. Wallace, Kristy M. Kiernan, Tom Haritos, John Robbins, Jon M. Loffi

Ryan Wallace

A recent rash of near mid-air collisions coupled with the widespread proliferation of small unmanned aircraft systems (sUAS) raise concerns that integration is posing additional risk to the National Airspace System. In 2016, sUAS sighting reports by manned aircraft pilots averaged 147 per month. In the first three quarters of 2017, sUAS sightings jumped to 188 per month. The purpose of this study was to evaluate sUAS operator behavior to determine potential interference with aviation operations. While previous research has indeed yielded findings about operator behavior, such studies were generally based on data derived from Aviation Safety Reporting System filings ...


Subscale Mars Colonization Mission, Cameron J. LaMack, James Lumsden, Sean Nevin, Donner Schoeffler, Riley Evers, Alexandra Poulakos, Skyler Tan, Anthony Keba, Siraj Zaman, Ali AlTamimi, anthony Modica 2019 Loyola Marymount University and Loyola Law School

Subscale Mars Colonization Mission, Cameron J. Lamack, James Lumsden, Sean Nevin, Donner Schoeffler, Riley Evers, Alexandra Poulakos, Skyler Tan, Anthony Keba, Siraj Zaman, Ali Altamimi, Anthony Modica

Honors Thesis

The team will compete in the SAE (Society of Automotive Engineers) Aero Design West Advanced Class competition, held 5-7th April 2019 in Van Nuys, California. The team will work to develop, through research, design, optimizational trade studies, and manufacturing, a system for the deployment of parasitic aircraft, as well as payload. The system will consist of a primary fixed-wing aircraft, parasitic autonomous gliders, a real-time altitude data acquisition system, as well as both static and releasable payload. The deployable gliders must navigate autonomously to a targeting area on the ground without any on-board propulsion. The releasable payload, which will consist ...


Evaluating Small Uas Operations And National Airspace System Interference Using Aeroscope, Ryan J. Wallace, Kristy M. Kiernan, Tom Haritos, John Robbins, Jon M. Loffi 2019 Embry-Riddle Aeronautical University

Evaluating Small Uas Operations And National Airspace System Interference Using Aeroscope, Ryan J. Wallace, Kristy M. Kiernan, Tom Haritos, John Robbins, Jon M. Loffi

Journal of Aviation Technology and Engineering

A recent rash of near mid-air collisions coupled with the widespread proliferation of small unmanned aircraft systems (sUAS) raise concerns that integration is posing additional risk to the National Airspace System. In 2016, sUAS sighting reports by manned aircraft pilots averaged 147 per month. In the first three quarters of 2017, sUAS sightings jumped to 188 per month. The purpose of this study was to evaluate sUAS operator behavior to determine potential interference with aviation operations. While previous research has indeed yielded findings about operator behavior, such studies were generally based on data derived from Aviation Safety Reporting System filings ...


Aviation Safety Action Program In The United States Air Force: Mobility Aircrews’ Intentions To Use Safety Reporting, Travis Jared Whittemore 2019 Embry-Riddle Aeronautical University

Aviation Safety Action Program In The United States Air Force: Mobility Aircrews’ Intentions To Use Safety Reporting, Travis Jared Whittemore

Dissertations and Theses

No abstract provided.


A Behavioral Research Model For Small Unmanned Aircraft Systems For Data Gathering Operations, Paul Leonard Myers III 2019 Embry-Riddle Aeronautical University

A Behavioral Research Model For Small Unmanned Aircraft Systems For Data Gathering Operations, Paul Leonard Myers Iii

Dissertations and Theses

According to Hitlin (2017) of the Pew Research Center, only 8% of U.S. citizens own an unmanned aircraft. Additionally, regarding feelings if U.S. citizens saw an unmanned aircraft flying close to where they live, 26% say they would be nervous, 12% feel angry, and 11% are scared. As of March 9, 2018, there were 1,050,328 U.S. small unmanned aircraft system (sUAS) registrations compared to 947,970 November 29, 2017. While sUAS use has increased in the U.S., it has lagged when compared to other items for personal use available to U.S. citizens as ...


Aviation Sustainability, Elizabeth Gemmer 2019 Bowling Green State University

Aviation Sustainability, Elizabeth Gemmer

Honors Projects

Sustainability in aviation has become a prominent issue. There is a substantial amount of information on sustainability measures taken and discussed at the local and global levels. However, the information is spread out over a wide array of sources and many people are not aware of what is being done. There have been many past efforts to integrate sustainability into aviation, those efforts continue today and will continue into the future. Aviation is a rapidly growing industry; as the industry grows and there becomes even more of a need for sustainability measures to keep it a viable mode of transport ...


Women In Aviation: A Workforce Report, Rebecca K. Lutte 2019 University of Nebraska at Omaha

Women In Aviation: A Workforce Report, Rebecca K. Lutte

Aviation Institute Faculty Publications

Aviation industry forecasts reveal the depth of the need for qualified personnel worldwide and the projected growth of the industry. Over the last five years, the industry has experienced average year over year passenger traffic growth of 6.5%, resulting in “unprecedented” financial prosperity for North American airlines (Boeing, 2018a). North American air carriers have accounted for more than half of the global industry prosperity in the last five years (Boeing, 2018a). The growth is attributed to multiple factors including lower air fares, higher standards of living in large emerging markets such as China and India, new airline business models ...


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