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Showing 221 - 240 of 525 results
  • Kinetic Analysis of Distinct Product Generation in Oxidative Pyrolysis of Four Octane Isomers
    Kinetic Analysis of Distinct Product Generation in Oxidative Pyrolysis of Four Octane Isomers
    Wang, Kun ;
    Bowman, CT
    2018-07-01 | PDF
    The molecular structures of hydrocarbon fuels are known to have a substantial impact on their combustion properties. However, the relationship between the fuel structure and thermal decomposition intermediate products, which determine the global combustion behaviors, is not as well known. In this study, four octane isomers, n-octane, 2,5-dimethylhe ...
  • DataDriven Flight Procedure Simulation and Noise Analysis in a LargeScale Air Transportation System
    Data-Driven Flight Procedure Simulation and Noise Analysis in a Large-Scale Air Transportation System
    Jensen, Luke ;
    Hansman, R. John
    2018-07-01 | PDF
    Aircraft noise is a growing source of community concern around airports. Despite the introduction of quieter aircraft, increased precision of onboard guidance systems has resulted in new noise impacts driven by overflight frequency effects. Noise issues present a potential barrier to the continued rollout of advanced operational procedures in the U ...
  • Established on Required Navigation Performance EoR RNP Concept Validation and Implementation Plans Human Factors Gap Analysis Phase 1 Final Report
    Established on Required Navigation Performance (EoR) (RNP) Concept Validation and Implementation Plans: Human Factors Gap Analysis [Phase 1 Final Report]
    Thomas, Lauren ;
    Serrato, Alicia
    2018-05-30 | PDF
    The Federal Aviation Administration (FAA) NextGen Human Factors Division commissioned this research to identify and share lessons learned from two air traffic control facilities that were “early adopters” of Established on Required Navigation Performance (EoR) (RNP) procedures. Seattle-Tacoma International Airport and Denver International Airport w ...
  • The Impact of NOx Emissions From Lightning on the Production of AviationInduced Ozone
    The Impact of NOx Emissions From Lightning on the Production of Aviation-Induced Ozone
    Khodayaria, Arezoo ;
    Vitt, Francis
    2018-05-01 | PDF
    Due to the non-linear nature of ozone production in the troposphere, ozone production as a function of aviation nitrogen oxide (NOx = NO + NO2) emissions varies based on the background NOx levels. Of the several different sources of background NOx in the atmosphere, NOx from lightning (LNOx) contributes a substantial amount of NOx to the upper trop ...
  • Effect of Residual Oxygenated Functional Groups on the Behavior of Alternative Jet Fuel Properties Project 31B
    Effect of Residual Oxygenated Functional Groups on the Behavior of Alternative Jet Fuel Properties (Project 31B)
    Garcia-Perez, Manuel
    2018-04-29 | PDF
    The goal of this project is the identification of the nature and the content of the oxygenated compounds present in alternative jet fuels and to develop methods for the fast identification of these oxygenated compounds. The chemical composition and fuel properties of nine alternative jet fuels (named as AJF 1-9) and three commercial jet fuels (name ...
  • Laser Hazards in Navigable Airspace
    Laser Hazards in Navigable Airspace
    United States. Department of Transportation. Federal Aviation Administration. Civil Aerospace Medical Institute
    2018-04-23 | 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.
    Supporting Files
  • A PhysicsBased Approach to Modeling RealFuel Combustion Chemistry I Evidence From Experiments and Thermodynamic Chemical Kinetic and Statistical Considerations
    A Physics-Based Approach to Modeling Real-Fuel Combustion Chemistry – I. Evidence From Experiments, and Thermodynamic, Chemical Kinetic and Statistical Considerations
    Wang, Hai ;
    Xu, Rui
    2018-04-01 | PDF
    Real distillate fuels usually contain thousands of hydrocarbon components. Over a wide range of combustion conditions, large hydrocarbon molecules undergo thermal decomposition to form a small set of low molecular weight fragments. In the case of conventional petroleum-derived fuels, the composition variation of the decomposition products is washed ...
  • FleetLevel Environmental Assessments for Feasibility of Aviation Emission Reduction Goals
    Fleet-Level Environmental Assessments for Feasibility of Aviation Emission Reduction Goals
    Ogunsina, Kolawole ;
    Chao, Hsun
    2018-04-01 | PDF
    The International Air Transport Association (IATA) is one of several organizations that have presented goals for future CO2 emissions from commercial aviation with the intent of alleviating the associated environmental impacts. These goals include attaining carbon-neutral growth in the year 2020 and total aviation CO2 emissions in 2050 equal to 50% ...
  • A Shock Tube Study of Jet Fuel Pyrolysis and Ignition at Elevated Pressures and Temperatures
    A Shock Tube Study of Jet Fuel Pyrolysis and Ignition at Elevated Pressures and Temperatures
    Shao, Jiankun ;
    Zhu, Yangye
    2018-04-01 | PDF
    The development of compact HyChem hybrid models for jet fuels requires datasets of pyrolysis product yields to constrain the model and of kinetic targets to evaluate the model. To this end, we have measured selected species time-histories during fuel pyrolysis using laser absorption, and ignition delay times using multiple methods behind reflected ...
  • Environmental Design Space Assessment of Continuous Lower Energy Emissions and Noise CLEEN Technologies
    Environmental Design Space Assessment of Continuous Lower Energy Emissions and Noise (CLEEN) Technologies
    Mavris, Dimitri ;
    Tai, Jimmy C
    2018-03-01 | PDF
    The Federal Aviation Administration (FAA) is pursuing the development of Continuous Lower Energy, Emissions and Noise (CLEEN) technologies for civil subsonic jet airplanes to help achieve the Next Generation Air Transportation System (NextGen) goals. These goals are to reduce significant community noise and air quality emissions impacts in absolute ...
  • FAA Aerospace Forecast Fiscal Years 20182038
    FAA Aerospace Forecast: Fiscal Years 2018-2038
    United States. Department of Transportation. Federal Aviation Administration
    2018-01-01 | PDF
    The FAA Aerospace Forecasts are developed to support budget and planning needs of the FAA. The forecasts are developed using statistical models to explain and incorporate emerging trends of the different segments of the aviation industry.
  • Block 1 Procedure Recommendations for Logan Airport Community Noise Reduction
    Block 1 Procedure Recommendations for Logan Airport Community Noise Reduction
    Hansman, R. John ;
    Jensen, Luke
    2017-12-01 | PDF
    Recent developments in navigation and surveillance technology have enabled new high-precision approach and departure operational procedures using GPS and Required Navigation Performance (RNP) standards. These procedures have proven effective for reducing fuel consumption and streamlining some aspects of air traffic control. However, flight tracks t ...
  • Worldwide Life Cycle Analysis LCA of Greenhouse Gas GHG Emissions from Petroleum Jet Fuel
    Worldwide Life Cycle Analysis (LCA) of Greenhouse Gas (GHG) Emissions from Petroleum Jet Fuel
    Barrett, Steven R.H. ;
    Malina, Robert
    2017-11-09 | PDF
    The main objective of this project was to calculate greenhouse gas emissions estimates for petroleum jet fuels for the recent past and for future scenarios in the coming decades. Results were reported globally and broken out by world regions, and the impact of changes in future demand for certain petroleum products and of changes in crude propertie ...
  • Formulation of Optimal Surrogate Descriptions of Fuels Considering Sensitivities to Experimental Uncertainties
    Formulation of Optimal Surrogate Descriptions of Fuels Considering Sensitivities to Experimental Uncertainties
    Govindaraju, Pavan Bharadwaj ;
    Ihme, Matthias
    2017-11-01 | PDF
    Transportation fuels consist of a large number of species that belong to different families of compounds. Surrogate fuel representations have been formulated to better understand their fundamental chemical composition and to emulate combustion properties. These descriptions are formulated using experiments or through computations, which has thus le ...
  • FAA Center Of Excellence For Alternative Jet Fuels Environment Annual Technical Report For The Period October 1 2016 September 30 2017
    FAA Center Of Excellence For Alternative Jet Fuels & Environment : Annual Technical Report : For The Period October 1, 2016 - September 30, 2017
    ASCENT Aviation Sustainability Center
    2017-09-30 | PDF
    This report covers the period October 1, 2016 through September 30, 2017. 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 will be hosted by the Massachusetts Institute of Technology, April 3-4, 2018 i ...
  • The Civil Aerospace Medical Institute An International Resource
    The Civil Aerospace Medical Institute: An International Resource
    United States. Department of Transportation. Federal Aviation Administration. Civil Aerospace Medical Institute
    2017-09-15 | 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.
  • Simultaneous Imaging of Fuel OH and Three Component Velocity Fields in High Pressure Liquid Fueled Swirl Stabilized Flames at 5 kHz1
    Simultaneous Imaging of Fuel, OH, and Three Component Velocity Fields in High Pressure, Liquid Fueled, Swirl Stabilized Flames at 5 kHz1
    Chterev, Ianko ;
    Rock, Nicholas
    2017-09-01 | PDF
    This paper describes implementation of simultaneous, high speed (5 kHz) stereo PIV, OH and fuel-PLIF in a pressurized, liquid fueled, swirl stabilized flame. The experiments were performed to characterize the flow field, qualitative heat release and fuel spray distributions, and flame dynamics. Acquiring high speed OH-PLIF in pressurized, liquid fu ...
  • Comparison of Methods for Evaluating Impacts of Aviation Noise on Communities
    Comparison of Methods for Evaluating Impacts of Aviation Noise on Communities
    Brenner, Morrisa A ;
    Hansman, R. John
    2017-07-01 | PDF
    Community opposition to the noise concentration from precise NextGen Performance-Based Navigation (PBN) aircraft arrival and departure procedures poses a significant threat to the future of these procedures in the U.S. National Airspace System. A substantial number of complaints concerning airport noise come from locations outside the 65dB Day-Nigh ...
  • Modeling the Effects of Aircraft Flight Track Variability on Community Noise Exposure
    Modeling the Effects of Aircraft Flight Track Variability on Community Noise Exposure
    Brooks, Callen T ;
    Hansman, R. John
    2017-07-01 | PDF
    The implementation of Performance Based Navigation (PBN) routes across the National Airspace System (NAS) has caused a significant concentration of flight tracks. This flight track concentration also creates a concentration of noise impacts on the communities surrounding airports, which has led to an increase in noise complaints at many airports th ...
  • Analysis of Approach Stability and Challenges in Operational Implementation of RNP Approach Procedures
    Analysis of Approach Stability and Challenges in Operational Implementation of RNP Approach Procedures
    Salgueiro, Sandro ;
    Hansman, R. John
    2017-05-01 | PDF
    Required Navigation Performance (RNP) instrument procedures guarantee high levels of navigation precision through highly accurate navigation sources (e.g. GPS) and real-time monitoring of position estimation accuracy. In recent years, the Federal Aviation Administration (FAA) has developed and published public RNP approach procedures at airports ac ...
221 - 240 / 525