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FAA William J. Hughes Technical Center for Advanced Aerospace

rosaP Repository & Open Science Access Portal

Technical reports, Tech Notes, and articles that document the FAA’s applied research, engineering, testing and evaluation, and resulting scientific solutions addressing current and future air transportation challenges in collaboration with industry, academia, and other government partners. For more content, visit the FAA Technical Library https://www.faa.gov/about/office_org/headquarters_offices/ang/library/. Bookmark this collection:https://rosap.ntl.bts.gov/collection_faa_tl or https://doi.org/10.21949/1530830.

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Showing 81 - 100 of 727 results
  • Development of an Inconel718 LSDYNA Material Model and MAT_224 Input Parameters
    Development of an Inconel-718 LS-DYNA® Material Model and *MAT_224 Input Parameters
    Dolci, Stefano ;
    Carney, Kelly
    2023-12-01 | PDF
    In a joint effort by George Mason University, The Ohio State University, NASA John H. Glenn Research Center, and the Federal Aviation Administration (FAA) Aircraft Catastrophic Failure Prevention Program, technology is being advanced to produce predictive impact analysis based on a material’s mechanical properties. The team has developed Inconel-71 ...
  • Aircraft Air Quality and Bleed Air Contamination Detection Engine Stand Tests Sensor Technologies and Chemical Sampling Phase 2 Volume 1
    Aircraft Air Quality and Bleed Air Contamination Detection: Engine Stand Tests, Sensor Technologies and Chemical Sampling (Phase 2, Volume 1)
    Fox, Richard B ;
    Jones, Byron W
    2023-11-01 | PDF
    The purpose of this project was to provide a data-driven process to identify sensing technology with good potential for detecting bleed air contamination from engine oil, hydraulic fluid, or deicing fluid. An on-wing test was conducted in February 2022. A test on an engine test bed was conducted in May 2022. Sensors and instruments were identified, ...
  • Effect of COVID Disinfection on Flight Deck Materials
    Effect of COVID Disinfection on Flight Deck Materials
    Dalton, Bethany J ;
    Khajehpour, Rebeka
    2023-11-01 | PDF
    Due to the COVID-19 worldwide pandemic, aircraft owners and operators may find it necessary to more frequently and thoroughly disinfect airplanes. The increased use of disinfectants on aircraft materials leads to the possibility of material degradation or negative impacts on equipment. This report investigates and discusses the effects of more freq ...
  • Evaluation of Effects from Mixing FluorineFree Foam Concentrates
    Evaluation of Effects from Mixing Fluorine-Free Foam Concentrates
    Trazzi, Daniel ;
    Casey, Jeremy
    2023-11-01 | PDF
    The objective of this test series was to identify changes in extinguishing performance of combinations of Fluorine-Free Foam (F3) concentrates and/or Aqueous Film-Forming Foam (AFFF) concentrates when mixed together. Four types of tests were chosen to examine the effects of mixing in different use cases: Mixed Immediate Use, Mixed Short-Term Stabil ...
  • Engineered Material Arresting System Sign SimulationExpanded Data Analysis
    Engineered Material Arresting System Sign Simulation—Expanded Data Analysis
    Gorman, W Russ ;
    White, James
    2023-11-01 | PDF
    Engineered Material Arresting System (EMAS) is a specially designed surface that is installed at the end of certain runways that do not have sufficient surrounding space to support the standard runway safety area (RSA). EMAS is designed to reduce the extent and associated risks of a runway excursion by arresting an aircraft that experiences an over ...
  • Operational Usability Assessment of the New Color Standard for Primary Terminal Air Traffic Control Displays
    Operational Usability Assessment of the New Color Standard for Primary Terminal Air Traffic Control Displays
    Truitt, Todd R ;
    Woroch, Brion
    2023-11-01 | PDF
    We emulated the new color standard, FAA HF-STD-010A, Baseline Requirements for Color Use in Air Traffic Control Displays, on a Terminal Radar Approach Control (TRACON) Primary Control Monitor (PCM). We then sought to identify human factors issues that may affect the broad implementation of the new color standard in existing and future air traffic c ...
  • PostCrash Fires in General Aviation Airplanes
    Post-Crash Fires in General Aviation Airplanes
    Bradley, Kristin
    2023-10-07 | PDF
    In general aviation, fatalities due to post crash fires have been an omnipresent threat throughout the decades. Existing regulations and protocol are largely based on decades old information and technologies. This study attempts to evaluate the modern-day risks and mitigations associated with post-crash fires using contemporary data analytics and t ...
  • Integrated Propulsion and Controls for Rotorcraft Phase 1
    Integrated Propulsion and Controls for Rotorcraft – Phase 1
    Collins, Kyle B ;
    Anderson, Richard
    2023-10-01 | PDF
    This technical report documents research conducted by Embry-Riddle Aeronautical University’s Eagle Flight Research Center team in the Integrated Flight and Propulsion Control for Rotorcraft Performance under contract 692M15-19-R-00016. The purpose of the research was to evaluate the performance of various control strategies multi-rotor VTOL aircraf ...
  • PCNPCR Comparisons for Medium and LargeHub Airport Runways
    PCN–PCR Comparisons for Medium- and Large-Hub Airport Runways
    Brill, David R
    2023-09-01 | PDF
    The Aircraft Classification Rating/Pavement Classification Rating (ACR/PCR) system was introduced in 2020 by the International Civil Aviation Organization (ICAO) as the standard method for reporting airport pavement bearing strength, replacing the previous Aircraft Classification Number/Pavement Classification Number (ACN/PCN) system. The Federal A ...
  • Evaluation of Unmanned Aircraft Systems for Airport Perimeter Inspections and Surveillance
    Evaluation of Unmanned Aircraft Systems for Airport Perimeter Inspections and Surveillance
    Sheairs, Jonathan ;
    Canter, Garrison
    2023-09-01 | PDF
    Federal Aviation Administration (FAA) Airport Technology Research and Development Branch personnel conducted a research effort to evaluate the use of unmanned aircraft systems (UASs) for airport perimeter inspections and surveillance. The purpose of this effort was to develop minimum recommended performance specifications and technical/operational ...
  • Experimental Testing to Characterize Plastic Deformation Dynamic Response and Ductile Fracture of Inconel 718 Under Various Loading Conditions
    Experimental Testing to Characterize Plastic Deformation, Dynamic Response, and Ductile Fracture of Inconel 718 Under Various Loading Conditions
    Ressa, Aaron ;
    Liutkus, Timothy
    2023-09-01 | PDF
    A team consisting of Federal Aviation Administration (FAA) Propulsion Research Program, The Ohio State University (OSU), George Mason University (GMU), and the National Aeronautics and Space Administration Glenn Research Center (NASA-GRC) collaborated to develop a new material model in LS-DYNA for impact applications of Inconel 718, a nickel based ...
  • Evaluation of Unmanned Aircraft Systems for Airport Obstacle Data Collection
    Evaluation of Unmanned Aircraft Systems for Airport Obstacle Data Collection
    Sheairs, Jonathan ;
    Canter, Garrison
    2023-09-01 | PDF
    The Federal Aviation Administration (FAA) Airport Technology Research and Development Branch initiated a research study in collaboration with the National Oceanic and Atmospheric Administration’s (NOAA) National Geodetic Survey (NGS) to evaluate the use of small unmanned aircraft systems (UASs) for collecting obstacle data at airports. The objectiv ...
  • Ductile Fracture of Aluminum 2024T351 Ti6Al4V and Inconel 718 under Complex States of Stress
    Ductile Fracture of Aluminum 2024-T351, Ti-6Al-4V, and Inconel 718 under Complex States of Stress
    Knott, Bryson
    2023-09-01 | PDF
    Many high-rate impact applications in the aerospace industry, such as a fan blade out event, can induce ductile fracture under loading conditions that are difficult to replicate experimentally. Varying temperatures and strain rates can influence fracture behavior, but the primary variable that drives fracture initiation in a ductile material is the ...
  • Lift Rotor Control Power Assessment of a LiftCruise Configuration
    Lift Rotor Control Power Assessment of a Lift+Cruise Configuration
    Bossinger, Robert L ;
    Hoffler, Keith D
    2023-09-01 | PDF
    The recent advent of electric propulsion has freed designers to put propulsors in nonconventional locations and opened aircraft design space to novel configurations. Many electric Vertical Take-off and Landing (eVTOL) aircraft with multiple lift-rotors that require advanced control systems to manage the large number of control effectors are being p ...
  • Lithium Battery Detecting Canine Demonstration
    Lithium Battery Detecting Canine Demonstration
    Rehn, Steven
    2023-09-01 | PDF
    This report summarizes a short test conducted by the Federal Aviation Administration (FAA) to determine the effectiveness of a trained canine to detect lithium batteries hidden inside of boxes. Fifteen identical cardboard boxes that either contained different types of lithium batteries, or were empty, were spread out around a building for the canin ...
  • Small Unmanned Aircraft System for Pavement Inspection
    Small Unmanned Aircraft System for Pavement Inspection
    Sourav, Md Abdullah All ;
    Ceylan, Halil
    2023-08-07 | PDF
    Airport pavements require routine maintenance, upgrading, and rehabilitation to reach or exceed their design period. While pavement distresses caused by environmental conditions cannot be prevented, early and routine maintenance work can minimize the deterioration. The current practice for airport pavement inspections relies on time-consuming visua ...
  • Machine Learning Approach for the Evaluation of Degraded Wheel Braking Performance on Contaminated Runways
    Machine Learning Approach for the Evaluation of Degraded Wheel Braking Performance on Contaminated Runways
    Lee, HyunKi ;
    Zhang, Wenxin
    2023-08-01 | PDF
    One of the most challenging issues in the airline community has been the safe operations of aircraft during the landing phase of flight. Several entities agree that runway excursion is the most frequent type of landing incident or accident, and studies on this topic have shown that a significant contributor is the condition of the runway surface at ...
  • Review of Automatic Speech Recognition Methodologies
    Review of Automatic Speech Recognition Methodologies
    Achour, Gabriel ;
    Salunke, Oojas
    2023-08-01 | PDF
    This report highlights the crucial role of Automatic Speech Recognition (ASR) techniques in enhancing safety for air traffic control (ATC) in terminal environments. ASR techniques facilitate efficient and accurate transcription of verbal communications, reducing the likelihood of errors. The report also details the evolution of ASR technologies, co ...
  • FluorineFree Foam Fire Tests Using Various Foam Delivery Configurations
    Fluorine-Free Foam Fire Tests Using Various Foam Delivery Configurations
    Trazzi, Daniel ;
    Casey, Jeremy
    2023-08-01 | PDF
    A series of fire tests were performed at the FAA William J Hughes Technical Center using various 40-gallons-per-minute hand line nozzle configurations fighting a 30-foot-diameter Jet-A fire. The objective of this test series was to evaluate fluorine-free foam (F3) on a larger scale than the standard MilSpec and International Civil Aviation Organiza ...
  • IndoorOutdoor Method for Measurement of Noise Reduction
    Indoor-Outdoor Method for Measurement of Noise Reduction
    Sharp, Ben ;
    Cox, J Eric
    2023-08-01 | PDF
    In 2014, the Federal Aviation Administration (FAA) amended the Airport Improvement Program (AIP) Handbook to clarify guidance for the funding of noise mitigation projects. The clarification addressed requirements that structures eligible for sound insulation treatment not only be located within the day-night average sound level (DNL) 65-decibel (dB ...
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