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Showing 81 - 100 of 617 results
  • Planar LaserInduced Incandescence for the Study of Soot Production in a Multisector RQL Jet A Combustor
    Planar Laser-Induced Incandescence for the Study of Soot Production in a Multi-sector RQL Jet A Combustor
    McGrath, Russell ;
    Juergensmeyer, Jeremiah
    2024-04-01 | PDF
    Understanding the production of non-volatile particulate matter (nvPM), which is composed primarily of soot, is critical not only for reducing emissions but also for improving engine performance. While there has been significant prior work studying the fundamentals of soot formation, there is significantly less work that investigates soot formation ...
  • Aircraft Noise Exposure and Body Mass Index Among Female Participants in Two Nurses Health Study Prospective Cohorts Living Around 90 Airports in the United States
    Aircraft Noise Exposure and Body Mass Index Among Female Participants in Two Nurses’ Health Study Prospective Cohorts Living Around 90 Airports in the United States
    Bozigar, Matthew ;
    Laden, Francine
    2024-04-01 | PDF
    Aircraft noise exposure is linked to cardiovascular disease risk. One understudied candidate pathway is obesity. This study investigates the association between aircraft noise and obesity among female participants in two prospective Nurses’ Health Study (NHS and NHSII) cohorts.
  • Biofuels Induced Land Use Change Emissions The Role of Implemented Land Use Emission Factors
    Biofuels Induced Land Use Change Emissions: The Role of Implemented Land Use Emission Factors
    Taheripour, Farzad ;
    Mueller, Steffen
    2024-03-26 | PDF
    Biofuels’ induced land-use change (ILUC) emissions have been widely studied over the past 15 years. Many studies have addressed uncertainties associated with these estimates. These studies have broadly examined uncertainties associated with the choice of economic models, their assumptions and parameters, and a few bio-physical variables. However, u ...
  • A LargeScale Validation Study of Aircraft Noise Modeling for Airport Arrivals
    A Large-Scale Validation Study of Aircraft Noise Modeling for Airport Arrivals
    Rindfleisch, Thomas C ;
    Alonso, Juan J
    2024-03-11 | PDF
    In the U.S., the Federal Aviation Administration’s Aviation Environmental Design Tool (AEDT) is approved to predict the impacts of aircraft noise and emissions. AEDT’s critical role in regulatory compliance and evaluating the environmental impacts of aviation requires asking how accurate are its noise predictions. Previous studies suggest that AEDT ...
  • Flight Crew Visual Scanning Techniques on Transport Category Aircraft
    Flight Crew Visual Scanning Techniques on Transport Category Aircraft
    Sarter, Nadine
    2024-03-01 | PDF
    Aviation incidents and accidents have often been linked to inadequate monitoring of flight deck information. Still, to date, limited data and guidance exist on how pilots should, and how they actually do allocate their attention to various flight deck displays. This project aims to help fill this gap with the goal to inform design and training inte ...
  • Chemical Analysis of Resulting Bleed Air Samples Collected from Simulated Engine Fluid Contamination Events
    Chemical Analysis of Resulting Bleed Air Samples Collected from Simulated Engine Fluid Contamination Events
    Ortiz-Martinez, Krisiam
    ORCID ICON IMG
    2024-02-23 | PDF
    Naval Air Warfare Center Aircraft Division (NAWCAD) supported a series of engine stand tests led by the Federal Aviation Administration’s Civil Aerospace Medical Institute (FAA/CAMI) as part of a congressionally mandated aircraft air quality study. Experiments were conducted at the Kansas National Gas Machinery Laboratory (NGML) from May 16th to 19 ...
  • Human Factors Information and Processes for FAAs Aircraft Evaluation Division A Review of the Literature
    Human Factors Information and Processes for FAA's Aircraft Evaluation Division – A Review of the Literature
    Cardosi, Kim ;
    Yahoodik, Sarah
    2024-02-01 | PDF
    The Aircraft Certification, Safety, and Accountability Act requires improved integration of human factors in the Federal Aviation Administration’s regulatory processes and material. This paper reviews research that could contribute to the data and processes that would be useful to the FAA in Aircraft Evaluation Division (AED) tasks. The more specif ...
  • Alcohol Flying
    Alcohol & Flying
    United States. Department of Transportation. Federal Aviation Administration. Civil Aerospace Medical Institute
    2024-02-01 | Aeromedical Safety Brochures | PDF
    Aeromedical Safety Brochures are prepared for general aviation pilots, commercial pilots and physicians. The brochures acquaint the aviation community with the physiological challenges of the aviation environment and relevant safety concerns.
  • Modeling the Air Quality Impact of Aircraft Emissions Is Area or Volume the Appropriate Source Characterization in AERMOD
    Modeling the Air Quality Impact of Aircraft Emissions: Is Area or Volume the Appropriate Source Characterization in AERMOD?
    Pandey, Gavendra ;
    Venkatram, Akula
    2024-02-01 | PDF
    Modeling dispersion of aircraft emissions is challenging because aircraft are mobile sources with varying emissions rates at different elevations depending on the operating mode. Aircraft emissions during landing and take-off cycle (LTO) influence air quality in and around the airport, and depending on the number of aircraft operations and location ...
  • Project 059A Jet Noise Modeling to Support Low Noise Supersonic Aircraft Technology Development
    Project 059(A) Jet Noise Modeling to Support Low Noise Supersonic Aircraft Technology Development
    Mavris, Dimitri N. ;
    Tai, Jimmy C.
    2024-02-01 | PDF
    This project sought to understand the degree to which a 2D supersonic inlet with variable geometry could mitigate thrust losses associated with the addition of jet noise reduction technologies, without overcoming the noise benefits from those technologies, during landing and takeoff (LTO) conditions. The work developed a supersonic inlet modeling c ...
  • Project 050 OverWing Engine Placement Evaluation
    Project 050 Over-Wing Engine Placement Evaluation
    Mavris, Dimitri N. ;
    Lee, Chung
    2024-02-01 | PDF
    The over-wing nacelle (OWN) aircraft concept has promising environmental benefits due to the engine noise shielding by the wings. However, if not optimized, this engine placement may cause penalties in fuel burn due to adverse aerodynamic interactions between the wing and propulsor. In this work, the team aims to develop a multi-disciplinary optimi ...
  • Opioid Epidemic and Aviation
    Opioid Epidemic and Aviation
    United States. Department of Transportation. Federal Aviation Administration. Civil Aerospace Medical Institute
    2024-01-01 | Aeromedical Safety Brochures | PDF
    Aeromedical Safety Brochures are prepared for general aviation pilots, commercial pilots and physicians. The brochures acquaint the aviation community with the physiological challenges of the aviation environment and relevant safety concerns.
  • A Scalable System to Measure Contrail Formation on a PerFlight Basis
    A Scalable System to Measure Contrail Formation on a Per-Flight Basis
    Geraedts, Scott ;
    Brand, Erica
    2024-01-01 | PDF
    Persistent contrails make up a large fraction of aviationʼs contribution to global warming. We describe a scalable, automated detection and matching (ADM) system to determine from satellite data whether a flight has made a persistent contrail. The ADM system compares flight segments to contrails detected by a computer vision algorithm running on im ...
  • Preliminary AEDT Noise Model Validation using RealWorld Data
    Preliminary AEDT Noise Model Validation using Real-World Data
    Willitt, Amber ;
    Bendarkar, Mayank V.
    2024-01-01 | PDF
    A focus on sustainability in aviation is required to mitigate the environmental impact of its growth. Modeling the environmental effects helps the aerospace community obtain quantitative data linked to aircraft emissions and noise. The Aviation Environmental Design Tool (AEDT) offers the capability to model aviation operations using data sources of ...
  • Sustainable Aviation Fuel Production in Colombia Opportunities and Challenge
    Sustainable Aviation Fuel Production in Colombia: Opportunities and Challenge
    Martinez-Valencia, Lina ;
    Valderrama-Rios, Claudia
    2024-01-01 | PDF
    The sustainable aviation fuel (SAF) working group in Colombia was convened under the SAF Global Supply Chain Development project (Project A93) led by the Federal Aviation Administration’s (FAA) Center of Excellence for Alternative Jet Fuels and Environment, also termed the Aviation Sustainability Center of Excellence (ASCENT) and executed by Washin ...
  • Modern Training Practices Studying the Use of Virtual Reality for Training Procedures in Flightcrew Training
    Modern Training Practices: Studying the Use of Virtual Reality for Training Procedures in Flightcrew Training
    Nguyen, Blake ;
    Sonnenfeld, Nathan
    2023-12-01 | PDF
    Flightcrew training is a cornerstone of aviation safety, ensuring that pilots and other crewmembers possess the skills and knowledge required to navigate complex aircraft and respond effectively to non-normal situations. As technology continues to advance and new training demands continue to emerge in the aviation industry, the use of modern traini ...
  • Quantitation of Olefins in Sustainable Aviation Fuel Intermediates Using Principal Component Analysis Coupled with Vacuum Ultraviolet Spectroscopy
    Quantitation of Olefins in Sustainable Aviation Fuel Intermediates Using Principal Component Analysis Coupled with Vacuum Ultraviolet Spectroscopy
    Kosir, Shane ;
    Feldhausen, John
    2023-12-01 | PDF
    Olefins, a common intermediate from biomass conversion processes, are undesirable in jet fuel because of their poor thermal stability. This paper presents an approach for olefin quantitation using 2D gas chromatography coupled with vacuum ultraviolet spectroscopy. Principal component analysis was used to reduce the dimensionality of the spectroscop ...
  • Project 010 Aircraft Technology Modeling and Assessment
    Project 010 Aircraft Technology Modeling and Assessment
    Mavris, Dimitri N. ;
    Crossley, William
    2023-12-01 | PDF
    For duration of Project 10's period of performance, the research activities have remained consistent on technology modeling, system level assessment and fleet level modeling. These activities were conducted for subsonic fleet from 2014 to 2017 and focused on supersonic fleet from 2017 to 2023. The final report focuses on the latter in which Georgia ...
  • Flightcrew Response to Aircraft System Failures Malfunctions and Systems Not Functioning as Expected
    Flightcrew Response to Aircraft System Failures, Malfunctions, and Systems Not Functioning as Expected
    Chandra, Divya C ;
    Sparko, Andrea L.
    2023-10-01 | PDF
    The primary goal of this research was to analyze operational data to study flightcrew response to system failures, malfunctions, and systems not functioning as expected. Data from normal flight operations show that pilots are exposed to such situations regularly. We reviewed 20 records from the Aviation Safety Reporting System (ASRS) public databas ...
  • FAA Center of Excellence for Alternative Jet Fuels Environment Annual Technical Report 2023 For the Period October 1 2022 September 30 2023
    FAA Center of Excellence for Alternative Jet Fuels & Environment: Annual Technical Report 2023: For the Period October 1, 2022 – September 30, 2023
    United States. Department of Transportation. Federal Aviation Administration. Center of Excellence for Alternative Jet Fuels and Environment  ...
    2023-10-01 | PDF
    This report covers the period October 1, 2022, through September 30, 2023. The Center was established by the authority of FAA solicitation 13-C-AJFE-Solicitation. During that time the ASCENT team launched a new website, which can be viewed at ascent.aero. The next meeting(s) will be held during the months of April and May 2024.
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