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Determining the Light Curve and 3D Shape of Asteroid Eunomia and Egeria Using Relative Photometry
Get PDFAsteroids are relics of our solar system’s early formation, preserving valuable information about planetary evolution. Understanding their rotational properties and surface features provides deeper insights into the dynamical and thermophysical processes that shape their evolution. This study aims to conduct photometric observations of two main-belt asteroids, Egeria and Eunomia, using the Embry-Riddle Aeronautical University 1-meter telescope. Observations will be conducted in the red band on February 28 and March 14, 2025, over five-hour sessions, capturing full rotational light curves for each asteroid. These data will be analyzed using MPO Canopus to generate 3D surface models through photometric inversion techniques. The results will provide insights into the effects of the Yarkovsky and YORP mechanisms on asteroid evolution and contribute to discussions on asteroid topography in public outreach initiatives. By improving our understanding of these celestial bodies, this research enhances broader studies on planetary formation and the evolution of small bodies in the solar system
Daytona Beach Postcard showing a \u27Flame Vine\u27. Early 1040s
No full textOne of a series of postcards bought by A W (Tony) Linfield, 5BFTS cadet on Course 18 (December 1943 - June 1944) while he was in Florida. Tony was a founder member of the 5BFTS Association and became the first Honorary Secretary. He donated his postcard collection to the 5BFTS Archives. Embry-Riddle Aeronautical University is at Daytona Beach.https://commons.erau.edu/bfts-images-florida-ww2/1010/thumbnail.jp
A Study of Preconditions and Postconditions as Design Constraints for LLM Code Generation
Get PDFLarge Language Models (LLMs) have significantly advanced automated code generation, but current methods predominantly rely on natural language descriptions. This approach encounters challenges when handling complex, class-level software generation tasks due to inherent ambiguity and under-specification. Few studies have investigated how more formal software engineering constraints, such as explicit preconditions and postconditions, influence class-level generation tasks. This work addresses this gap through a structured evaluation of six state-of-the-art LLMs generating software implementations from systematically designed class-level specifications. Results demonstrate that incorporating explicit design constraints significantly boosts initial generation accuracy (measured via the pass@k metric), particularly in Python but also in Java and C++. Models with fewer parameters or weaker initial performance saw especially pronounced benefits. These findings suggest integrating structured software engineering constraints into LLM-based code generation workflows to enhance accuracy and maintainability in automated software projects
Hybrid-Electric Regional Passenger Aircraft: Emphasizing Environmentally Impactful Technology
Get PDFThe aviation industry has significant negative impacts on the environment through greenhouse gas emissions and noise pollution. As small passenger aircraft tend to have more emissions per passenger mile than larger aircraft, this project aims to design a new hybrid-electric propulsion aircraft to be an innovative environmentally conscious option for short-range, limited-passenger flights. The design process focuses on constraint analyses, high stability, emission and noise reduction, uniqueness and marketability, and utilizing upcoming propulsion systems. Several new propulsion system options were assessed to prioritize viability and power and minimize environmental impacts. The hybrid-electric propulsion system and 12-passenger capacity were decided to maximize marketability while reducing weight and operational costs. Adopting a hybrid electric propulsion system aligns with environmentally friendly objectives by mitigating fuel consumption and reducing the overall aircraft weight. Furthermore, it decreases the frequency of maintenance by extending the lifespan of the aircraft through reduced engine wear. This design provides a hybrid-electric propulsion aircraft to limit the environmental effects of limited-passenger, point-to-point flights that optimize short-haul operational costs with the possibility for new configurations and larger models in the future
A Scoping Review of Aviation Loss of Control Inflight Research
Get PDFLoss of control – inflight (LOC-I) contributes to aircraft accidents at unacceptably high rates. Significant industry efforts and research have aimed to improve LOC-I prevention, detection, and recovery. This scoping review of literature systematically analyzed LOC-I literature between 2014 and 2024. The scoping review synthesized research findings and recommendations from 116 relevant articles. The research findings and recommendations were also categorized using the SHELL model to identify prevalent and understudied themes. Significant research has examined angle of attack indicators, integrated flight directors, automated LOC-I avoidance, detection, and recovery systems, as well as associated nonlinear aerodynamic modeling. Additionally, human performance shaping through training programs, integration of LOC detection and avoidance equipment in standard operating procedures, and enhanced operations monitoring have received moderate attention. Few studies examined environmental influences on LOC-I or their interfaces with personnel actions. A mere seven studies examined the complexities of human-to-human interfaces for LOC-I prevention or recovery. This article elaborates on prevalent research themes and areas for potential research
Networking Night
No full textOpen to veterans, active duty, guard, reservists, and military dependents
Light Pollution at Embry-Riddle: Effects and Solutions for Our Grey Skies
No full textEmbry-Riddle Aeronautical University (ERAU) has the largest telescope in Florida. Unfortunately, the light pollution at Embry-Riddle Daytona causes a disadvantage for those who use observation resources, such as the ERAU 1-meter telescope. Members of the ERAU Light Pollution Group (within the Astrophysics Research Club) and I present a literature review of their own data collection methods, successes, and our proposed plans for the future. We have already found that light pollution can be mitigated with a few steps. In the Light Pollution Group\u27s work shown at the Discovery Day conference in April 2024, the light intensity was measured by a Unihedron Sky Quality Meter directly above wall lights near the ERAU quad before and after a top cover and yellow light filter were placed on the lights. The difference measured was 1 magnitude, which is about 2.5 times dimmer after the filter and cover were placed, which means light intensity was reduced. Our study not only reiterates past observations of the severity of light pollution, but it also digs deeper into why the methods work (such as why the light filter reduces light intensity). This poster is concluded by using our research to propose other new methods for light pollution mitigation. This work will push light pollution research and advocacy further, hopefully resulting in some changes at ERAU that will benefit astronomers, such as implementing warmer toned lights or light covers around campus
Hydrogen Standards and Aviation Sustainability
No full textStandards from ISO, SAE, and ASTM are essential for certification, safety, and sustainability validation