Research papers
5,883 papers · NASA NTRS, NTSB, FAA CAMI
NASA NTRS · 1,269 NTSB Safety Studies · 12 NTSB Aircraft Accident Reports · 17 Embry-Riddle Scholarly Commons · 1,993
5,883 matches
- arXiv 2019 ARXIV arXiv preprint
The effect of turbulence on drifting snow sublimation
Sublimation of drifting snow, which is significant for the balances of mass and energy of the polar ice sheet, is a complex physical process with intercoupling between ice crystals, wind field, temperature, and moisture.…
- NASA NTRS 2019 ARC Conference Paper
Training for Long-Duration Space Missions: A Literature Review into Skill Retention and Generalizability
In long-duration space missions, skill retention and generalizability become ever more important as mission length increases, for it is through these capabilities that astronaut crews achieve autonomy.
- arXiv 2019 ARXIV arXiv preprint
Autonomous Control of a Quadrotor-Manipulator; Application of Extended State Disturbance Observer
In this work, the autonomous control of a quadrotor-manipulator unmanned aerial vehicle is treated using an extended dynamic model. Due to persistent aerodynamic disturbances and dynamic couplings, the control of a quadr…
- arXiv 2019 ARXIV arXiv preprint
The friction of tilted skates on ice
The friction felt by a speed skater is calculated as function of the velocity and tilt angle of the skate. This calculation is an extension of the more common theory of friction of upright skates.
- Embry-Riddle Scholarly Commons 2019 ERAU Journal article (IJAAA)
A Data Mining Approach to Building a Predictive Model of Low-Cost Carriers' Presence in the U.S. Domestic Routes
The purpose of the study was to build the predictive model of the presence of U.S. low-cost carriers (LCCs) in the domestic network structure.
- arXiv 2019 ARXIV arXiv preprint
Autoignition and detonation development from a hot spot inside a closed chamber: effects of end wall reflection
The advancement of highly boosted internal combustion engines (ICEs) with high thermal efficiency is mainly constrained by knock and super-knock respectively due to the end gas autoignition and detonation development.
- Semantic Scholar 2019 Article (Safety Science)
Safety intelligence: Incremental proactive risk management for holistic aviation safety performance
Abstract Aviation safety is traditionally managed based on the analysis of accidents and incidents. Such strategies allowed aviation safety to evolve greatly, but have the major drawback of being reactive, i.e.
- Semantic Scholar 2019 Article (Clinical Interventions in Aging)
The Effectiveness Of Radial Extracorporeal Shock Wave Therapy In Patients With Chronic Low Back Pain: A Prospective, Randomized, Single-Blinded Pilot Study
Purpose This prospective, randomized and single-blinded study assesses the influence of radial extracorporeal shock wave therapy (rESWT) in patients with low back pain (LBP).
- NASA NTRS 2019 ARC Abstract
"Sensor Web Evolution - Webs of Webs for NASA Science - Focus on small Uninhabited Aerial Systems (sUAS)"
This paper will describe the evolution of information collection, derivation and delivery mechanisms in webs of NASA sensor webs, with a focus on recent advancements in small Uninhabited Aerial Systems (sUAS).
- NASA NTRS 2019 LaRC Poster
Combining GOES-16 and Surface Ceilometer Data to Improve Cloud Ceiling Estimates over the U.S.
To better address the low ceiling hazard to aviation, a hybrid approach is taken that utilizes satellite data to extend cloud ceiling information contained in surface station observations to much wider areas.
- Semantic Scholar 2019 Article (Cancer)
Internet-Assisted Cognitive Behavioral Intervention for Targeted Therapy–Related Fatigue in Chronic Myeloid Leukemia: Results From a Pilot Randomized Trial
Fatigue is a common and disabling side effect of targeted therapies such as tyrosine kinase inhibitors (TKIs) used to treat chronic myeloid leukemia (CML).
- Semantic Scholar 2019 Article (BioMed Research International)
Comparison of the Effectiveness of High-Intensity Interval Training in Hypoxia and Normoxia in Healthy Male Volunteers: A Pilot Study
Aims The study investigated the effect of high-intensity interval training in hypoxia and normoxia on serum concentrations of proangiogenic factors, nitric oxide, and inflammatory responses in healthy male volunteers.
- arXiv 2019 ARXIV arXiv preprint
Ship resistance when operating in floating ice floes: a combined CFD&DEM approach
Whilst climate change is transforming the Arctic into a navigable ocean where small ice floes are floating on the sea surface, the effect of such ice conditions on ship performance has yet to be understood.
- Semantic Scholar 2019 Article (Journal of Aerospace Information Systems)
Bayesian Network for Managing Runway Overruns in Aviation Safety
Runway excursions at landing constitute a major threat to aviation safety. Among them, runway overruns, defined as those occurrences when an aircraft departs the end of a runway, are the most frequ...
- NASA NTRS 2019 ARC Poster
The Relationship between Workload, Performance and Fatigue in a Short-Haul Airline
Short-haul flights are associated with irregular work schedules and increased workload, due to frequent takeoffs and landings. We examined the relationship between pilot workload, performance and subjective fatigue durin…
- NTSB Safety Studies 2019 NTSB Safety study
Bell 525 Relentless In-Flight Breakup
Investigation report and safety study on the 6 July 2016 in-flight breakup of a Bell 525 Relentless helicopter prototype during a developmental flight test near Italy, Texas.
- NTSB Aircraft Accident Reports 2019 NTSB Accident report
In-Flight Breakup of Bell 525 Relentless Helicopter
Bell 525 prototype helicopter in-flight breakup near Italy, TX, July 6, 2016 — 2 fatalities. Investigation of the developmental-flight-test in-flight breakup of a Bell 525 Relentless prototype.
- arXiv 2019 ARXIV arXiv preprint
Experimental Validation of Stable Coordination for Multi-Robot Systems with Limited Fields of View using a PortableMulti-Robot Testbed
In this paper, we address the problem of stable coordinated motion in multi-robot systems with limited fields of view (FOVs). These problems arise naturally for multi-robot systems that interact based on sensing, such as…
- arXiv 2019 ARXIV arXiv preprint
Freezing a rivulet
We investigate experimentally the formation of the particular ice structure obtained when a capillary trickle of water flows on a cold substrate.
- arXiv 2019 ARXIV arXiv preprint
Special Orthogonal Group SO(3), Euler Angles, Angle-axis, Rodriguez Vector and Unit-Quaternion: Overview, Mapping and Challenges
The attitude of a rigid-body in the three dimensional space has a unique and global definition on the Special Orthogonal Group SO (3).
- arXiv 2019 ARXIV arXiv preprint
Flight Controller Synthesis Via Deep Reinforcement Learning
Traditional control methods are inadequate in many deployment settings involving control of Cyber-Physical Systems (CPS). In such settings, CPS controllers must operate and respond to unpredictable interactions, conditio…
- arXiv 2019 ARXIV arXiv preprint
A Swash Mass Unmanned Aerial Vehicle: Design, Modeling and Control
In this paper, a new unmanned aerial vehicle (UAV) structure, referred to as swash mass UAV, is presented. It consists of a double blade coaxial shaft rotor and four swash masses that allow changing the orientation and m…
- Semantic Scholar 2019 Article (Cognitive and Behavioral Neurology)
Effects of a Mixed Reality-based Cognitive Training System Compared to a Conventional Computer-assisted Cognitive Training System on Mild Cognitive Impairment: A Pilot Study
Background: Mixed reality (MR) technology, which combines the best features of augmented reality and virtual reality, has recently emerged as a promising tool in cognitive rehabilitation therapy.
- FAA-affiliated R&D (MITRE / Volpe / FAA Tech Center) 2019 FAA-TC FAA Tech Center certification report
Engine Bird Ingestion Certification Testing — Large Flocking Birds
Hughes Technical Center bird-ingestion certification testing for turbofan engines — drove revisions to FAR 33.76 large-bird ingestion thresholds after the Hudson River ditching (NTSB AAR-11/01).
- Semantic Scholar 2019 Article (BMC Medical Education)
Determining the feasibility and effectiveness of brief online mindfulness training for rural medical students: a pilot study
We sought to determine the feasibility and effectiveness of a mindfulness training program, delivered online to medical students at a Rural Clinical School.
- arXiv 2019 ARXIV arXiv preprint
An optimization framework for route design and allocation of aircraft to multiple departure routes
In this article, we present the development of a two-step optimization framework to deal with the design and selection of aircraft departure routes and the allocation of flights among these routes.
- NASA NTRS 2019 ARC Conference Paper
Pilot Evaluation of Proposed Go-Around Criteria for Transport Category Aircraft
The primary objective of this study was to capture pilot feedback and decision-making with regard to proposed, hypothetical, go-around criteria that were developed based on previous research.
- NASA NTRS 2019 GRC Poster
Molten Silicate Reactivity with Environmental Barrier Coating Materials for Gas Turbine Engine Applications
Rare earth (RE) disilicates are utilized in environmental barrier coatings (EBCs) to protect SiC-based ceramic matrix composites (CMCs) from destructive reactions with water vapor and other combustion species.
- NASA NTRS 2019 CDMS Technical Memorandum (TM)
NASA research experience on jet aircraft control problems in severe turbulence
NASA research experience on jet aircraft control problems in severe turbulence
- NASA NTRS 2019 ARC Technical Memorandum (TM)
San Francisco Bar Pilot Fatigue Study
The purpose of this study was to evaluate the extent of fatigue among San Francisco Bar Pilots (Maritime Pilots) and its potential impact on safety, and to make recommendations concerning how the risk of fatigue could be…
- NASA NTRS 2019 CDMS Reprint (Version printed in journal)
Effect of resistance training on muscle use during exercise
This study examined the effect of resistance training on exercise-induced contrast shift in magnetic resonance (MR) images. It was hypothesized that a given load could be lifted after training with less muscle showing co…
- NASA NTRS 2019 HQ Video
Langley's 50th Year
This video gives an historical overview of Langley Research Center's major achievements in aeronautics and astronautics research between the years 1917-1967.
- NASA NTRS 2019 ARC Presentation
Pilot/Controller Coordinated Decision Making in the Next Generation Air Transportation System
Introduction: NextGen technologies promise to provide considerable benefits in terms of enhancing operations and improving safety. However, there needs to be a thorough human factors evaluation of the way these systems w…
- NASA NTRS 2019 CDMS Conference Paper
Aircraft icing: Introduction
The objectives of the Workshop were as follows: (1) to assess the current understanding of fixed wing and rotorcraft operational icing environments and problems (2) to evaluate facilities requirements for R&D and certifi…
- NASA NTRS 2019 CDMS Special Publication (SP)
Applications of research on human decision making
Human decision making in manned space flight including topics on memory models, signal detection, and pilot performance
- NASA NTRS 2019 CDMS Technical Memorandum (TM)
Flight simulators. Part 1: Present situation and trends. Part 2: Implications for training
The present situation and developments in the technology of flight simulators based on digital computers are evaluated from the standpoint of training airline flight crews.
- NASA NTRS 2019 CDMS Conference Paper
Slewing maneuvers and vibration control of space structures by feedforward/feedback moment-gyro controls
This paper presents a moment-gyro control approach to the maneuver and vibration suppression of a flexible truss arm undergoing a constant slewing motion.
- NASA NTRS 2019 CDMS Conference Paper
Optimal recovery from microburst wind shear
The flight path of a twin-jet transport aircraft is optimized in a microburst encounter during approach to landing. The objective is to execute an escape maneuver that maintains safe ground clearance and an adequate stal…
- NASA NTRS 2019 CDMS Reprint (Version printed in journal)
Deep stall characteristics of MU-300
The deep stall characteristics of the MU-300 Diamond aircraft are described. The MU-300 obtained type certification from the FAA in 1981, and from Canada, West Germany, and England in 1983.
- NASA NTRS 2019 CDMS Conference Proceedings
Antecedents and analogues - Experimental aircraft
The paper reviews the development of experimental aircraft from 1953 to the present. Consideration is given to the X-series experimental aircraft, to X-15 (the first aerospace plane), to the transition of experimental ai…
- NASA NTRS 2019 CDMS Other
Human factors: Aeronautics
The objectives of the Aeronautics Human Factors Research and Technology program are to provide the technology base and capability to design effective crew-cockpit systems and to advance solutions to human problems affect…
- NASA NTRS 2019 CDMS Reprint (Version printed in journal)
The Sub-bureau for Atmospheric Angular Momentum of the International Earth Rotation Service - A meteorological data center with geodetic applications
By exchanging angular momentum with the solid portion of the earth, the atmosphere plays a vital role in exciting small but measurable changes in the rotation of our planet.
- Semantic Scholar 2019 Article (Journal of The American Geriatrics Society)
Pain Management in Nursing Home Residents: Findings from a Pilot Effectiveness‐Implementation Study
To evaluate the effectiveness and implementation of a multilevel pain management intervention in nursing homes (NHs) comprising a pain management guideline, care worker training, and pain champions.
- arXiv 2019 ARXIV arXiv preprint
Research on Autonomous Maneuvering Decision of UCAV based on Approximate Dynamic Programming
Unmanned aircraft systems can perform some more dangerous and difficult missions than manned aircraft systems. In some highly complicated and changeable tasks, such as air combat, the maneuvering decision mechanism is re…
- NASA NTRS 2019 HQ Special Publication (SP)
Ikhana: Unmanned Aircraft System Western States Fire Missions. Monographs in Aerospace History, Number 44
In 2006, NASA Dryden Flight Research Center, Edwards, Calif., obtained a civil version of the General Atomics MQ-9 unmanned aircraft system and modified it for research purposes.
- NASA NTRS 2019 CDMS Other
NASA research experience on jet aircraft control problems in severe turbulence
Wind tunnel tests, flight simulation tests, and flight tests on jet aircraft control in severe atmospheric turbulence
- NASA NTRS 2019 CDMS Video
Airline Safety and Economy
This video documents efforts at NASA Langley Research Center to improve safety and economy in aircraft. Featured are the cockpit weather information needs computer system, which relays real time weather information to th…
- NASA NTRS 2019 HQ Conference Paper
Certification
Objective 1: Provide regulators with a methodology for development of airworthiness requirements for certification of UAS. a) Rationale: a comprehensive methodology does not currently exist to support development of regu…
- arXiv 2019 ARXIV arXiv preprint
A Planning Framework for Persistent, Multi-UAV Coverage with Global Deconfliction
Planning for multi-robot coverage seeks to determine collision-free paths for a fleet of robots, enabling them to collectively observe points of interest in an environment.
- NASA NTRS 2019 JPL Reprint (Version printed in journal)
Spacebased Estimation of Moisture Transport in Marine Atmosphere Using Support Vector Regression
An improved algorithm is developed based on support vector regression (SVR) to estimate horizonal water vapor transport integrated through the depth of the atmosphere ((Theta)) over the global ocean from observations of …