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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 61 - 80 of 1170 results
  • Development of a Titanium Alloy Ti6Al4V Generalized Yield Surface Material Model Used in LSDYNA
    Development of a Titanium Alloy Ti-6Al-4V Generalized Yield Surface Material Model Used in LS-DYNA
    Ragone, Fabrizio
    2025-06-01 | PDF
    This thesis is part of a collaborative effort involving George Mason University (GMU), The Ohio State University (OSU), the National Aeronautics and Space Administration (NASA) Glenn Research Center (GRC), and the Federal Aviation Administration (FAA) under the Aircraft Catastrophic Failure Prevention Program (ACFPP). The primary objective of this ...
  • Reinforcement LearningAssisted Virtualized Security Framework for CAVs
    Reinforcement Learning-Assisted Virtualized Security Framework for CAVs
    Sahoo, Jagruti ;
    Mukwaya, Arthur Noa
    2025-06-01 | PDF
    Security vulnerabilities in the Connected and Autonomous Vehicle (CAV) software can allow hackers to perform malicious actions ranging from draining batteries and taking control of the steering wheel to disabling the alarm system. CAV software is subject to several cyber-attacks including memory corruption, code injection, remote code execution, an ...
  • Ductile Fracture of Ti6Al4V Titanium Alloy Under Compressive Stress States
    Ductile Fracture of Ti-6Al-4V Titanium Alloy Under Compressive Stress States
    White, Ethan J.
    2025-05-07 | PDF
    A notoriously challenging modeling and simulation problem is the impact physics of jet engine debris striking the engine case during a fan blade-out or rotor-burst event. The multiplicity of potential failure modes resulting from the impact and subsequent penetration of high-speed engine fragments advances the challenge. The ductile fracture model ...
  • AIA Recommendations Related to Gas Turbine Engine Overspeed Events from High Pressure Turbine Shaft LossofLoad
    AIA Recommendations Related to Gas Turbine Engine Overspeed Events from High Pressure Turbine Shaft Loss-of-Load
    Aerospace Industries Association of America
    2025-05-01 | PDF
    In 2015, the FAA requested the Aerospace Industries Association form a voluntary advisory group related to gas turbine overspeed events resulting from shaft loss-of-load. Motivating the request at the time were engine applicant’s requests to be relieved of considering certain elements of the shaft system from failure consideration in determining th ...
  • Point Cloud Failure Criterion for Impact Modeling of Composite Structures
    Point Cloud Failure Criterion for Impact Modeling of Composite Structures
    Maurya, Ashutosh
    ORCID ICON IMG
    2025-04-01 | PDF
    An orthotropic elasto-plastic damage material model (OEPDMM) suitable for impact analysis of composite materials has been developed through a joint research project funded by the Federal Aviation Administration (FAA) and the National Aeronautics and Space Administration (NASA). The developed material model has been implemented into LS-DYNA®, a comm ...
  • Analysis of the Ground Collision Avoidance System Within NASAs Expandable Vehicle Autonomy Architecture
    Analysis of the Ground Collision Avoidance System Within NASA’s Expandable Vehicle Autonomy Architecture
    Hook, Loyd R ;
    Urban, Jude M
    2025-03-01 | PDF
    This document provides comprehensive methodology and results in the evaluation of a Ground Collision Avoidance System (GCAS) tuned for a general aviation airplane. The GCAS under investigation was designed by the Armstrong flight research center at the National Aeronautics and Space Administration (NASA). This research focused on two characteristic ...
  • Aircraft Air Quality and Bleed Air Contamination Detection: Phase 2, Volume 2 [supporting dataset]
    Fox, Richard B ;
    Jones, Byron W
    2025-02-14 | PDF
    The purpose of this project was to provide a data driven process to identify sensor technologies with the potential for detecting and identifying low levels of contaminants that may occasionally be present in aircraft engine bleed air supplies. Bleed air from a ground-based aircraft propulsion engine and an auxiliary power unit (APU) were used to s ...
    Dataset Supporting Files
  • Structurally Distributed Aircraft Battery
    Structurally Distributed Aircraft Battery
    Kumar, Jitendra ;
    Morgan, Alexander
    2025-02-01 | PDF
    Lithium-ion batteries (LIBs) are critical to the early adoption of electrified small aircraft because LIBs can provide the required energy, power, and cycle life. However, safety is still a concern, especially in dangerous situations like aircraft crashes or operations in harsh conditions. If damaged, the battery can release stored energy fast, lea ...
  • Field Validation of the IndoorOutdoor Method for Measurement of Noise Reduction
    Field Validation of the Indoor-Outdoor Method for Measurement of Noise Reduction
    Sharp, Ben ;
    Cox, Eric
    2025-01-01 | PDF
    The Federal Aviation Administration’s (FAA) Airport Improvement Program (AIP) handbook outlines guidance for the funding of noise mitigation projects and the accuracy of existing noise reduction measurements of a structure. Prior research by the FAA to develop best practices for measuring the aircraft noise reduction of building façades resulted in ...
  • Aircraft Air Quality and Bleed Air Contamination Detection OnWing Tests Sensor Technologies and Chemical Sampling Phase 2 Volume 2
    Aircraft Air Quality and Bleed Air Contamination Detection; On-Wing Tests, Sensor Technologies, and Chemical Sampling (Phase 2, Volume 2)
    Fox, Richard B ;
    Jones, Byron W
    2025-01-01 | PDF
    The purpose of this project was to provide a data driven process to identify sensor technologies with the potential for detecting and identifying low levels of contaminants that may occasionally be present in aircraft engine bleed air supplies. Bleed air from a ground-based aircraft propulsion engine and an auxiliary power unit (APU) were used to s ...
  • Liion Battery Safety under HighSpeed Impact Diagnosis Prognosis and Risk Mitigation
    Li-ion Battery Safety under High-Speed Impact: Diagnosis, Prognosis and Risk Mitigation
    Kumar, Jitendra
    2025-01-01 | PDF
    Lithium-ion batteries (LIBs) are critical to the early adoption of electrified small aircraft because they can provide the required energy, power, and cycle life. However, safety is still a concern, especially in dangerous situations like aircraft crashes or operations in harsh conditions. If damaged, the battery can release stored energy fast, lea ...
  • Electric Vertical Takeoff and Landing eVTOL Downwash and Outwash Surveys
    Electric Vertical Takeoff and Landing (eVTOL) Downwash and Outwash Surveys
    Muia, Maria J ;
    Stanley, Joshua
    2024-12-01 | PDF
    As part of the Federal Aviation Administration’s (FAA) effort to establish vertiport design guidance for facilities intended to accept powered lift and special class rotorcraft, it is of growing importance to determine the risk factors related to vertical takeoff and landing (VTOL) operations and how to mitigate them. The airflow generated from the ...
  • Evaluation Of Novel VSTOL Aircraft Pilot Interface Concepts Version 115
    Evaluation Of Novel V/STOL Aircraft Pilot Interface Concepts — Version 1.15
    Feary, Michael ;
    Kaneshige, John
    2024-12-01 | PDF
    This report documents a response to a request from the FAA UAS Integration Office to provide recommendations for candidate methods for evaluating the airworthiness of a broad range of new aircraft concepts. The UAS Integration Office is facing an unprecedented diversity of applicant aircraft and automation configurations in aviation segments genera ...
  • Cold Dwell Fatigue of Titanium Alloys History Current State and Aviation Industry Perspective Supporting Software
    Cold Dwell Fatigue of Titanium Alloys: History, Current State, and Aviation Industry Perspective [Supporting Software]
    Pilchak, Adam ;
    Fox, Kate
    2024-11-13 | ZIP
    This report summarizes the current state of understanding related to cold dwell fatigue (CDF) of titanium alloys, which is a failure mechanism that can lead to uncontained failure of rotating components. Jet engine manufacturers have brought forward their collective field and spin rig experience related to CDF and coupled it with a thorough literat ...
  • Bonded Repairs to Composite Wing Panel Structure Phase 4 Feasibility Study of Panels with FiberOriented Scarf Repairs
    Bonded Repairs to Composite Wing Panel Structure: Phase 4, Feasibility Study of Panels with Fiber-Oriented Scarf Repairs
    Labik, Tim M ;
    Chadha, Reewanshu
    2024-11-01 | PDF
    The Federal Aviation Administration (FAA) and The Boeing Company have investigated safety and structural integrity issues of bonded repair technology. Efforts are focused on testing and analyzing bonded repairs to 40-in x 24-in flat carbon fiber-reinforced composite panels representative of wing skin using the Aircraft Beam Structural Test (ABST) f ...
  • Design Analysis and Test Development of FullScale Fuselage Test Panels to Assess Emerging Metallic Structures Technologies
    Design, Analysis, and Test Development of Full-Scale Fuselage Test Panels to Assess Emerging Metallic Structures Technologies
    Kulak, Michael ;
    Bakuckas, John Jr.
    2024-11-01 | PDF
    The aircraft industry is striving to improve structural performance and reduce costs in fabrication, operation, and maintenance by introducing advanced designs/materials in conjunction with advanced manufacturing/assembly technologies. Collectively these technologies are referred to as Emerging Metallic Structures Technologies (EMST). Prior tests b ...
  • Investigation of Certification Considerations for Distributed Electric Propulsion DEP Aircraft 2024
    Investigation of Certification Considerations for Distributed Electric Propulsion (DEP) Aircraft [2024]
    McKillip, R. Jr. ;
    Wachspress, D
    2024-10-01 | PDF
    Efforts from a multi-year investigation examining the use of estimation of remaining vehicle control power margins and external environmental disturbances for distributed electric propulsion (DEP) vehicles as a contributor for vehicle certification are described. This study combines simulation of DEP aircraft with experimental testing of representa ...
  • Analysis of Granular BaseSubbase in Airport Pavements Using Embedded Sensors
    Analysis of Granular Base/Subbase in Airport Pavements Using Embedded Sensors
    Tutumluer, Erol ;
    Kang, Mingu
    2024-09-01 | PDF
    This project investigates the modulus and deformation behavior of granular base/subbase layers in airport pavements using three types of embedded sensors: bender element (BE) field sensors, coil sensors, and pressure cells. These sensors were installed in multiple test items at the Federal Aviation Administration’s Construction Cycle 9 (CC9) of the ...
  • Cold Dwell Fatigue of Titanium Alloys History Current State and Aviation Industry Perspective
    Cold Dwell Fatigue of Titanium Alloys: History, Current State, and Aviation Industry Perspective
    Pilchak, Adam ;
    Fox, Kate
    2024-09-01 | PDF
    This report summarizes the current state of understanding related to cold dwell fatigue (CDF) of titanium alloys, which is a failure mechanism that can lead to uncontained failure of rotating components. Jet engine manufacturers have brought forward their collective field and spin rig experience related to CDF and coupled it with a thorough literat ...
  • InService Performance of Concrete Airport Pavements Constructed Using State Highway Specifications
    In-Service Performance of Concrete Airport Pavements Constructed Using State Highway Specifications
    Peshkin, David G. ;
    Quasem, Tanvir
    2024-09-01 | PDF
    The Federal Aviation Administration (FAA) Reauthorization Act of 2018, Section 136 requires the FAA to allow the use of state highway specifications for airfield pavement construction at non-primary airports serving aircraft with a gross weight less than 60,000 lb if requested by the state. To confirm that state highway specifications provide an ac ...
61 - 80 / 1170
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