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Showing 41 - 60 of 617 results
  • Aircraft Wake Vortices An Annotated Bibliography 1921 2020
    Aircraft Wake Vortices: An Annotated Bibliography (1921 - 2020)
    Soares, Melanie A. ;
    Robins, Robert E.
    2025-05-01 | PDF
    This is an updated version of the "Hallock, J. N., Aircraft Wake Vortices: An Annotated Bibliography (1923 - 1990), DOT-FAA-RD-90-30 / DOT-VNTSC-FAA-90-7, 1991” and other related historical bibliographies. This annotated bibliography consists of abstracts of publications on aircraft wake vortices and related fields. This material was developed as p ...
  • Measurement of Spray Chamber Ignition Delay and Cetane Numbers for Aviation Turbine Fuels
    Measurement of Spray Chamber Ignition Delay and Cetane Numbers for Aviation Turbine Fuels
    Luecke, Jon ;
    Naser, Nimal
    2025-05-01 | PDF
    Experiments using pure compounds, National Jet Fuels Combustion Program (NJFCP) test fuels, and commercial jet fuels were conducted to demonstrate the equivalence of the indicated cetane number (ICN) and derived cetane number (DCN) for jet fuels. The calibrated range for ICN was also extended to lower cetane number (CN) values (5 to 35) to allow CN ...
  • Spray and Soot Characteristics of Liquid Spray Flames in a HighPressure Sector Combustor
    Spray and Soot Characteristics of Liquid Spray Flames in a High-Pressure Sector Combustor
    Vishwanath, Rahul ;
    Olimid, Dominic
    2025-03-01 | PDF
    Conventional aviation combustors use liquid fuels where spray atomization is important for efficient combustion process and resultant emissions. In this study, a three-sector combustor with commercial pre-filming air blast injectors is utilized to analyze the effect of operating conditions on spray and soot formation. Measurements are performed wit ...
  • Freezing Point of Hydrocarbon Fuels from Single Species Concentrations
    Freezing Point of Hydrocarbon Fuels from Single Species Concentrations
    Bell, David C ;
    Boehm, Randall C.
    2025-02-24 | PDF
    The freezing point is an important property for determining the operating range of liquid hydrocarbon fuels. Many thermodynamic properties, like density, viscosity, and vapor pressure, have simple blending rules that can accurately predict the properties of a complex mixture. Freezing point, however, does not behave this way and shows nonlinear and ...
  • Assessment of Global Land Cover Changes Using Satellite Data Intermittent and LongTerm Land Cover Changes From 2001 to 2020
    Assessment of Global Land Cover Changes Using Satellite Data: Intermittent and Long-Term Land Cover Changes From 2001 to 2020
    Chen, Shuo ;
    Zhuang, Qianlai
    2025-02-01 | PDF
    Global land cover has changed during the past decades, influencing biogeochemical cycles and the global climate system. This study aimed to improve understanding of global land cover dynamics to enable more effective future land management practices and conservation actions. This study quantified interannual changes in global land cover types from ...
  • Pilot Vision
    Pilot Vision
    United States. Department of Transportation. Federal Aviation Administration. Civil Aerospace Medical Institute
    2025-01-17 | 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.
  • Air Travel Consumer Report December 2024
    Air Travel Consumer Report: December 2024
    United States. Department of Transportation. Office of Aviation Consumer Protection
    2024-12-01 | Air Travel Consumer Report Series | PDF
    The Air Travel Consumer Report is a monthly product of the Department of Transportation’s Office of Aviation Consumer Protection (OACP). The report is designed to assist consumers with information on the quality of services provided by the airlines. The report is divided into sections (Flight Delays, Mishandled Baggage Wheelchairs and Scooters, Ove ...
  • Air Travel Consumer Report November 2024
    Air Travel Consumer Report: November 2024
    United States. Department of Transportation. Office of Aviation Consumer Protection
    2024-11-01 | Air Travel Consumer Report Series | PDF
    The Air Travel Consumer Report is a monthly product of the Department of Transportation’s Office of Aviation Consumer Protection (OACP). The report is designed to assist consumers with information on the quality of services provided by the airlines. The report is divided into sections (Flight Delays, Mishandled Baggage Wheelchairs and Scooters, Ove ...
  • A Regulatory Analysis and Process Improvement Decision Support Framework for Unmanned Aerial System UAS Noise Certification
    A Regulatory Analysis and Process Improvement Decision Support Framework for Unmanned Aerial System (UAS) Noise Certification
    Balchanos, Michael ;
    Ravikanti, Balaji
    2024-11-01 | PDF
    The rapidly growing Unmanned Aerial Systems (UAS) vehicle category with applications across various configurations and mission profiles introduces challenges in ensuring that applicable noise certification regulations are met. A framework is proposed for assessing regulatory compliance to noise standards and analyzing the process effectiveness and ...
  • Effects of Wind on Multirotor UAS Noise Measurements
    Effects of Wind on Multirotor UAS Noise Measurements
    ElSharkawy, EzzEldin ;
    Valente, Vítor T
    2024-11-01 | PDF
    The aerodynamic and acoustic state of an aircraft depends strongly on its airspeed; however, most small multirotor Uncrewed Aerial Systems (UAS), or “drones,” fly autonomously using a fixed ground speed measured using onboard inertial sensors. In this work, a specially instrumented UAS with an air data system based on an ultrasonic anemometer that ...
  • 2021 FAA Aerospace Medical Certification Services Airman Customer Satisfaction Survey [supporting dataset]
    Worthington, Kylie ;
    Hu, Peter T.
    2024-10-16 | md
    The Civil Aerospace Medical Institute (CAMI) of the Federal Aviation Administration (FAA) has surveyed pilots who recently sought medical certification every approximately two years since 2006. The survey examines satisfaction with Aerospace Medical Certification Services (AMCS) provided by Aviation Medical Examiners (AME), FAA Regional Flight Surg ...
    Dataset Supporting Files
  • Summary of Results Aerospace Medical Certification Services Airman Satisfaction Survey 2021
    Summary of Results: Aerospace Medical Certification Services – Airman Satisfaction Survey 2021
    Worthington, Kylie ;
    Yetter, Casey B.
    2024-10-16 | PDF
    The Civil Aerospace Medical Institute (CAMI) of the Federal Aviation Administration (FAA) has surveyed pilots who recently sought medical certification every approximately two years since 2006. The survey examines satisfaction with Aerospace Medical Certification Services (AMCS) provided by Aviation Medical Examiners (AME), FAA Regional Flight Surg ...
  • Incorporating Meander to Account for the Impact of Low Winds in Area Source Modeling AERMOD as a Case Study
    Incorporating Meander to Account for the Impact of Low Winds in Area Source Modeling; AERMOD as a Case Study
    Venkatram, Akula ;
    Pandey, Gavendra
    2024-10-01 | PDF
    A variety of sources of pollutant emissions can be represented as area sources. These include manure lagoons, landfills, wastewater treatment ponds, and highways. A group of point sources can also be treated as an area source. The impact of an area source is usually computed by representing the area source as a set of line sources perpendicular to ...
  • Contrail Altitude Estimation Using GOES16 ABI Data and Deep Learning
    Contrail Altitude Estimation Using GOES-16 ABI Data and Deep Learning
    Meijer, Vincent R ;
    Eastham, Sebastian D.
    2024-10-01 | PDF
    The climate impact of persistent aircraft contrails is currently estimated to be comparable to that due to aviation-emitted CO2. A potential near-term and low-cost mitigation option is contrail avoidance, which involves rerouting aircraft around ice-supersaturated regions, preventing the formation of persistent contrails. Current forecasting method ...
  • Identifying Human Factors Research for Unmanned Aircraft Systems and Advanced Air Mobility
    Identifying Human Factors Research for Unmanned Aircraft Systems and Advanced Air Mobility
    Kaliardos, William N. (Bill) ;
    Holbrook, Jon
    2024-10-01 | PDF
    This paper identifies some of the key human factors (HF) challenges when integrating Unmanned Aircraft Systems (UAS) and Advanced Air Mobility (AAM) into the civil airspace. Unique HF considerations—those which are derived from the key differentiating aspects of UAS/AAM compared to conventional aviation—are the primary basis for identifying HF rese ...
  • Cognitive Skill Degradation Phase III
    Cognitive Skill Degradation: Phase III
    Lubold, Nichola ;
    Finseth, Tor
    2024-09-19 | PDF
    This report documents the data and findings of a research study conducted to (1) collect an inventory of flightpath management (FPM) cognitive skills and examples of flightpath management knowledge for Part 121 operations and (2) investigate how susceptible FPM cognitive skills and knowledge are to degradation. A human-in-the-loop (HITL) simulation ...
  • Deep Vein Thrombosis and Travel 2024
    Deep Vein Thrombosis and Travel [2024]
    United States. Department of Transportation. Federal Aviation Administration. Civil Aerospace Medical Institute
    2024-09-12 | 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
  • PAISANO Performance Assessment for Instrumentation Systems used for Aircraft NOise Guidance and Recommendations for Assessment and Validation of Noise Measurement Recording and Analysis Instrumentation Systems for Establishing Compliance with Aircraft Noise Certification Specifications and Requirements
    “PAISANO” – Performance Assessment for Instrumentation Systems used for Aircraft NOise [Guidance and Recommendations for Assessment and Validation of Noise Measurement, Recording, and Analysis Instrumentation Systems for Establishing Compliance with Aircraft Noise Certification Specifications and Requirements]
    Samiljan, Robert ;
    Read, David
    2024-09-11 | PDF
    This document provides guidance in the form of recommendations and requirements applicable to acoustic data collection, recording, and analysis instrumentation systems for use by applicants for aircraft noise certification under the authority of Code of Federal Regulations, Title 14, part 36.
  • Flight Deck Perspectives on Departure Procedures for Multiple Airport Route Separation
    Flight Deck Perspectives on Departure Procedures for Multiple Airport Route Separation
    Sparko, Andrea L. ;
    Chandra, Divya C
    2024-09-01 | PDF
    This paper documents portions of a study that examined current flight deck human factors issues associated with Performance-Based Navigation (PBN) departure procedures (DPs), with a focus on issues relevant to a proposed Air Traffic Control (ATC) operational concept called Multiple Airport Route Separation (MARS). MARS aims to improve the flow of a ...
  • Assessing the Effect of Composition on Dielectric Constant of Sustainable Aviation Fuel
    Assessing the Effect of Composition on Dielectric Constant of Sustainable Aviation Fuel
    Yang, Zhibin ;
    Bell, David C
    2024-09-01 | PDF
    One of the challenges in developing 100% sustainable aviation fuels is the effect of synthetic blend components on the dielectric constant. Modern aircraft often employ capacitance-based gauging systems that rely on the dielectric constant of the fuel onboard to determine fuel quantity. Aircraft manufacturers have expressed concern over inaccuracie ...
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