Scholarly Commons

Martin Hawley
24d ago

Bio Martin Hawley is a US Marine Corps Veteran who did two tours in Afghanistan as a Marine and an additional two tours as a Defense Contractor. A working aircraft mechanic, student, husband and father to a 9 month old baby girl. Much of what little free time he does get he spend volunteering with his local community theater group, designing and building sets for stage shows. Recommended Citation…

Vat photopolymerization additive manufacturing enables fabrication of highly complex geometries but remains underutilized for thermal and mass transfer applications because of limited functional printable materials and experimentally validated device designs. This dissertation advances the application of vat photopolymerization through the development of microencapsulated phase change material co…

Carbon Fiber reinforced polymers (CFRPs) are widely used in aerospace, automotive, and structural applications due to their high specific strength, stiffness, and design flexibility. Their mechanical performance is critically governed by the fiber–matrix interface which controls stress transfer and directly influences damage initiation, crack propagation, and fracture behaviour. The interface pro…

Future lunar and deep-space missions will require new structural concepts that reduce mass while maintaining reliability. Two technologies that have received significant attention are inflatable habitats and additively manufactured structures; however, challenges remain in their characterization, validation, and long-term monitoring. This dissertation investigates methods to improve the testing a…

The design of an inward-turning, high-speed, three-dimensional streamline traced intake is presented from osculating axisymmetric theory. To satisfy the osculating intake design criteria, a stitched Busemann diffuser and Internal Conical Flow-A solution is used as the basic isentropic compressive streamline. This new contour provides efficient compression, high flow uniformity, and straight leadi…

Fast pressure-sensitive paint (PSP) was applied to an inlet/isolator designed using the Osculating Internal Waverider Inlet with Parallel Streamlines (OIWPS) method. The dorsal isolator surface pressure was measured using anodized-aluminum PSP through transparent cast acrylic that makes up the ventral portion of the isolator. Temperature-sensitive paint was utilized to correct for the PSP’s tempe…

A high-speed, shape-transitioned, inward-turning intake was tested in Purdue’s Boeing/AFOSR Mach 6 Quiet Tunnel. The inlet model, called the Indiana Inlet (INlet), had a total contraction ratio of 4.68:1 and a design point of Mach 6 at 0° angle of attack. The model was outfitted with a suite of high-frequency pressure transducers, and the external flowfield was imaged with high-speed schlieren ph…

Between the windward and leeward rays, boundary-layer transition on cones at angle of attack in hypersonic flow is dominated by the crossflow instability [1, 2], wherein stationary and/or traveling crossflow vortices develop and can breakdown into turbulence [3]. Stationary crossflow modes are caused by surface roughness or any other steady forcing and produce disturbances that are fixed in place…

The inner surface pressure of an axisymmetric inlet/isolator model was measured using anodized-aluminum pressure-sensitive paint (PSP) viewing through cast acrylic. Temperaturesensitive paint was utilized to correct for the PSP’s temperature sensitivity. The model was tested under Mach 5.7 flow at 𝑹𝒆 = 7.1 ×106 /m under conventional noise conditions. Transverse jet injection with jet-to-inlet mas…

INTRODUCTION: T his study aimed to update and reinforce previous research on helicopter emergency medical service accidents in the United States. By investigating predictors of fatalities after helicopter emergency medical service crashes through the application of machine learning techniques, we updated existing data sets and sought to uncover patterns that traditional analysis might not reveal.…

Andrea Irish
7/20/2026

The Airline Quality Rating Report is a product of academic research from the previous co-authors Dr. Dean Headley and Dr. Brent Bowen. The research originated at the W. Frank Barton School of Business, Wichita State University in Wichita, Kansas. Throughout the 35 years this rigorous research has been conducted at the University of Nebraska, Purdue University, and Embry-Riddle Aeronautical Univer…

Tyler Z. Floyd
7/20/2026

Set against the unforgiving, wintery backdrop of the Blue Ridge Mountains in West Virginia, "Echoes of the Mountain" is a gripping wilderness survival story that explores the bond between man and dog, and the limits of human endurance. The narrative follows Silas, a rugged former military aircraft maintainer, who ventures off-trail into treacherous terrain to recover his lost coonhound, Echo. Dur…

This dissertation developed and evaluated agar-based biopolymer films prepared by solution casting through three formulation routes: binary agar-starch blending, ternary agar-starch-chitosan blending, and cellulose nanocrystal or cellulose nanofiber reinforcement. Physical measurements, tensile testing, differential scanning calorimetry, thermogravimetric analysis, Fourier transform infrared spec…

Cassandra Konz
7/14/2026

This poem deconstructs the concept of "airworthiness" from its technical definition to the broader concepts of worth, flight, and the forces that push us higher.

With the popularity of space travel increasing, it is important to understand the effects of microgravity on microbial communities as alterations on bacterial interactions can occur. Staphylococcus epidermidis and Escherichia coli are bacteria that are commonly found within human microbiomes. S. epidermidis is a cocci-shaped gram-positive bacterium that is part of the human skin microbiome. Howev…

JD Hobkirk
7/9/2026

Frequency Zero is a grounded science fiction thriller that explores the terrifying intersection of rigid aviation protocol and the unexplainable. Set during the desolate 02:00 shift at a high-desert regional airport, the narrative follows Elana, a pragmatic air traffic controller whose unwavering faith in logic and physics is shattered by the arrival of an impossible aircraft. Operating without a…

Direct ink writing provides a versatile manufacturing route for fabricating functional fiber and granular composites with controlled architecture, tunable interfaces, and customized material distributions. Fiber reinforced composites offer high stiffness, strength, fatigue resistance, and functional anisotropy, while granular composites provide scalable access to particle based structures with hi…

Deborah Romero et al.
7/1/2026

The Black Box is a service organization run by students of Embry-Riddle Aeronautical University, Prescott, Arizona. Funding is provided by the Prescott Campus Student Government Association. The Black Box is published by a volunteer staff consisting of students from various academic disciplines.

As artificial intelligence transforms aviation, aerospace, and autonomy-related sectors, higher education must adapt to meet evolving workforce demands. This session shares emerging findings from a nationwide study led by Embry-Riddle Aeronautical University, focused on employer perceptions of AI adoption, responsible use, and workforce preparedness in domains including uncrewed systems, space sy…

This research paper delves into the implications of the General Data Protection Regulation (GDPR) and the United Kingdom (UK) GDPR on academic institutions, shedding light on their significance for organizations and educational establishments handling data from individuals in the European Union (EU) and the UK. Non-compliance with these regulations can lead to substantial penalties. The study foc…

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