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Showing 41 - 60 of 521 results
  • NearZero Environmental Impact Aircraft
    Near-Zero Environmental Impact Aircraft
    Prashanth, Prakash ;
    Elmourad, Jad
    2024-07-01 | PDF
    The fundamental challenge facing today's aviation industry is to achieve net zero climate impacts while simultaneously sustaining growth and global connectivity. Aviation's impact on surface air quality, which is comparable to aviation's climate impact when monetized, further heightens this challenge. Prior studies have proposed solutions that aim ...
  • Localized ResolventMode Bases for Turbulence Statistics
    Localized Resolvent-Mode Bases for Turbulence Statistics
    Eichberger, Ethan ;
    Heidt, Liam F
    2024-06-01 | PDF
    Modes from global resolvent analyses have been shown to accurately model the frequencies and spatial structure of the dominant coherent structures in several turbulent flows. However, resolvent-mode forcing models must be developed to predict the amplitude of the structures or other flow statistics, including the radiated noise. The present researc ...
  • The Effect of Theoretical SAF Composition on Calculated Engine and Aircraft Efficiency
    The Effect of Theoretical SAF Composition on Calculated Engine and Aircraft Efficiency
    Boehm, Randall C. ;
    Faulhaber, Conor
    2024-06-01 | PDF
    Whether the feedstock for sustainable aviation fuel (SAF) originates from agriculture or from waste streams, life cycle CO2 emissions per unit enthalpy are lower for SAF than they are for petroleum distillates primarily because of differences on the front end such as fostered growth of crops or decreased demand for resources or acreage to manage wa ...
  • Extended Reality in Flight Attendant Initial Training Data Management Plan
    Extended Reality in Flight Attendant Initial Training [Data Management Plan]
    Breeding, Levi L
    ORCID ICON IMG
    2024-05-01 | PDF
    The purpose of this study was to determine if the addition of extended reality (XR) to an existing training program provided to new hire flight attendants improved training effectiveness in terms of cabin door procedures. Methods. This retrospective cohort study used preexisting flight attendant training data provided by a collaborating organizatio ...
  • TimeVarying Broadband Noise of Multirotor Aircraft
    Time-Varying Broadband Noise of Multirotor Aircraft
    Gan, Ze Feng ;
    Valente, Vítor T
    2024-05-01 | PDF
    Rotor broadband noise is typically analyzed over time scales encompassing multiple rotor periods. However, modulation of broadband noise levels with the blade passage frequency has been shown to be significant for human perception of wind turbine and helicopter noise. Time-varying broadband noise has not been extensively studied for aircraft with m ...
  • 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.
  • ReducedOrder Model for Supersonic Transport Takeoff Noise Scaling with Cruise Mach Number
    Reduced-Order Model for Supersonic Transport Takeoff Noise Scaling with Cruise Mach Number
    Voet, Laurens J. A. ;
    Prashanth, Prakash
    2024-04-01 | PDF
    The recent interest in the development of supersonic transport raises concerns about an increase in community noise around airports. As noise certification standards for supersonic transport other than Concorde have not yet been developed by the International Civil Aviation Organization, there is a need for a physics-based scaling rule for superson ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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.
  • 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 ...
  • 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 ...
  • 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 ...
41 - 60 / 521