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 2022 ARXIV arXiv preprint
Deep Reinforcement Learning for Online Routing of Unmanned Aerial Vehicles with Wireless Power Transfer
The unmanned aerial vehicle (UAV) plays an vital role in various applications such as delivery, military mission, disaster rescue, communication, etc., due to its flexibility and versatility.
- Semantic Scholar 2022 Article (International Conference on Applied System Innovation)
Application of Augmented Reality for Aviation Equipment Inspection and Maintenance Training
In the procedure of aviation equipment maintenance, a healthy status and prior knowledge are essential to every person. Making the newcomers get familiar with their tasks rapidly and reducing human error are important is…
- NASA NTRS 2022 ARC Technical Memorandum (TM)
The Effects of Training and Flight Director Use on Pilot Monitoring Performance: A Sensemaking Approach
The need for improved pilot monitoring and awareness has been widely recognized, and training is a possible intervention. Based on our sensemaking-model of monitoring, we identified key properties of monitoring flight pa…
- arXiv 2022 ARXIV arXiv preprint
Learning Reduced Nonlinear State-Space Models: an Output-Error Based Canonical Approach
The identification of a nonlinear dynamic model is an open topic in control theory, especially from sparse input-output measurements. A fundamental challenge of this problem is that very few to zero prior knowledge is av…
- arXiv 2022 ARXIV arXiv preprint
A Survey on Energy Optimization Techniques in UAV-Based Cellular Networks: From Conventional to Machine Learning Approaches
Wireless communication networks have been witnessing an unprecedented demand due to the increasing number of connected devices and emerging bandwidth-hungry applications.
- arXiv 2022 ARXIV arXiv preprint
Finite volume based film flow and ice accretion models on aircraft wings
The thin runback water films driven by the gas flow, the pressure gradient and the gravity on the iced aircraft surface are investigated in this paper.
- arXiv 2022 ARXIV arXiv preprint
Enhanced Prediction of Three-dimensional Finite Iced Wing Separated Flow Near Stall
Icing on three-dimensional wings causes severe flow separation near stall. Standard improved delayed detached eddy simulation (IDDES) is unable to correctly predict the separating reattaching flow due to its inability to…
- arXiv 2022 ARXIV arXiv preprint
Error Bounds for Discrete-Continuous Shortest Path Problems with Application to Free Flight Trajectory Optimization
Two-stage methods addressing continuous shortest path problems start local minimization from discrete shortest paths in a spatial graph.
- arXiv 2022 ARXIV arXiv preprint
Risk-aware UAV-UGV Rendezvous with Chance-Constrained Markov Decision Process
We study a chance-constrained variant of the cooperative aerial-ground vehicle routing problem, in which an Unmanned Aerial Vehicle (UAV) with limited battery capacity and an Unmanned Ground Vehicle (UGV) that can also a…
- arXiv 2022 ARXIV arXiv preprint
Parameterized Differential Dynamic Programming
Differential Dynamic Programming (DDP) is an efficient trajectory optimization algorithm relying on second-order approximations of a system's dynamics and cost function, and has recently been applied to optimize systems …
- arXiv 2022 ARXIV arXiv preprint
Two-dimensional partitioned square ice confined in graphene/graphite nanocapillaries
As one of the most fascinating confined water/ice phenomena, two-dimensional square ice has been extensively studied and experimentally confirmed in recent years.
- NASA NTRS 2022 GRC Presentation
Introduction to Aircraft Icing and NASA’s Approach to Understanding It
This presentation provides a brief introduction to aircraft icing and NASA’s approach to understanding it. Specific topics that will be discussed include ice formation on an aircraft, the different types of ice, paramete…
- arXiv 2022 ARXIV arXiv preprint
Time Efficient Joint UAV-BS Deployment and User Association based on Machine Learning
This paper proposes a time-efficient mechanism to decrease the on-line computing time of solving the joint unmanned aerial vehicle base station (UAV-BS) deployment and user/sensor association (UDUA) problem aiming at max…
- Semantic Scholar 2022 Article (Reliability Engineering & System Safety)
Application of structural topic modeling to aviation safety data
- Semantic Scholar 2022 Article (Safety)
Assessment of Aircraft Engine Blade Inspection Performance Using Attribute Agreement Analysis
Background—Visual inspection is an important element of aircraft engine maintenance to assure flight safety. Predominantly performed by human operators, those maintenance activities are prone to human error.
- arXiv 2022 ARXIV arXiv preprint
Moving Obstacle Avoidance: a Data-Driven Risk-Aware Approach
This paper proposes a new structured method for a moving agent to predict the paths of dynamically moving obstacles and avoid them using a risk-aware model predictive control (MPC) scheme.
- arXiv 2022 ARXIV arXiv preprint
Millimeter-wave Foresight Sensing for Safety and Resilience in Autonomous Operations
Robotic platforms are highly programmable, scalable and versatile to complete several tasks including Inspection, Maintenance and Repair (IMR).
- Semantic Scholar 2022 Article (Safety)
Assessing and Advancing Safety Management in Aviation
A safety management system (SMS) is the overall set of procedures, documentation, and knowledge systems as well as the processes using them, which are employed within an organisation to control and improve its safety per…
- arXiv 2022 ARXIV arXiv preprint
Aircraft Conflict Resolution with Trajectory Recovery Using Mixed-Integer Programming
To guarantee the safety of flight operations, decision-support systems for air traffic control must be able to improve the usage of airspace capacity and handle increasing demand.
- arXiv 2022 ARXIV arXiv preprint
Long Short-Term Memory for Spatial Encoding in Multi-Agent Path Planning
Reinforcement learning-based path planning for multi-agent systems of varying size constitutes a research topic with increasing significance as progress in domains such as urban air mobility and autonomous aerial vehicle…
- arXiv 2022 ARXIV arXiv preprint
Quad2Plane: An Intermediate Training Procedure for Online Exploration in Aerial Robotics via Receding Horizon Control
Data driven robotics relies upon accurate real-world representations to learn useful policies. Despite our best-efforts, zero-shot sim-to-real transfer is still an unsolved problem, and we often need to allow our agents …
- Semantic Scholar 2022 Article (Sustainability)
Introductory Disaster Training for Aspiring Teachers: A Pilot Study
Schools may serve as shelters after a disaster in many countries, including Japan. However, teachers are unaware of the need to balance education and shelter management responsibilities under such circumstances.
- arXiv 2022 ARXIV arXiv preprint
A fully Lagrangian DEM-MPS mesh-free model for ice-wave dynamics
This paper develops and evaluates a novel 3D fully-Lagrangian (particle-based) numerical model, based on the hybrid discrete element method (DEM) and moving particle semi-implicit (MPS) mesh-free techniques, for modeling…
- Semantic Scholar 2022 Article (Canadian journal of occupational therapy. Revue canadienne d'ergotherapie)
Managing Fatigue in Parkinson’s Disease: Protocol for a Pilot Randomized Controlled Trial
Background. Fatigue is a disabling symptom of Parkinson’s disease (PD). Managing Fatigue: A Six-Week Energy Conservation Intervention was developed to improve the occupational performance of people with fatigue.
- arXiv 2022 ARXIV arXiv preprint
Resilient UAV Formation for Coverage and Connectivity of Spatially Dispersed Users
Unmanned aerial vehicles (UAVs) are a convenient choice for carrying mobile base stations to rapidly setup communication services for ground users.
- arXiv 2022 ARXIV arXiv preprint
Vertiport Selection in Hybrid Air-Ground Transportation Networks via Mathematical Programs with Equilibrium Constraints
Urban air mobility is a concept that promotes aerial modes of transport in urban areas. In these areas, the location and capacity of the vertiports--where the travelers embark and disembark the aircraft--not only affect …
- arXiv 2022 ARXIV arXiv preprint
Droplet impact on asymmetric hydrophobic microstructures
Textured hydrophobic surfaces that repel liquid droplets unidirectionally are found in nature such as butterfly wings and ryegrass leaves and are also essential in technological processes such as self-cleaning and anti-i…
- arXiv 2022 ARXIV arXiv preprint
Critical percolation threshold restricts late-summer Arctic sea ice melt pond coverage
During the summer, vast regions of Arctic sea ice are covered by meltwater ponds that significantly lower the ice reflectivity and accelerate melting.
- arXiv 2022 ARXIV arXiv preprint
Routing with Privacy for Drone Package Delivery Systems
Unmanned aerial vehicles (UAVs), or drones, are increasingly being used to deliver goods from vendors to customers. To safely conduct these operations at scale, drones are required to broadcast position information as co…
- Semantic Scholar 2022 Article (BMC Geriatrics)
Feasibility of an online training and support program for dementia carers: results from a mixed-methods pilot randomized controlled trial
Background iSupport is an online program developed by the World Health Organization to provide education, skills training, and social support to informal carers of persons with dementia.
- Semantic Scholar 2022 Article (Journal of Safety Research)
The effect of an embargo, sanctions and culture on safety climate: A qualitative view from aviation maintenance in the MENA region.
INTRODUCTION Safety climate assessment is a key measure of organizational safety. A strong safety climate is integral to the high safety performance in aviation.
- Semantic Scholar 2022 Article (Australian Critical Care)
Virtual reality during work breaks to reduce fatigue of intensive unit caregivers: A crossover, pilot, randomised trial.
PURPOSE Intensive care unit (ICU) caregivers are exposed to high levels of stress. Work-related stress can impact quality of life and may lead to burnout.
- NASA NTRS 2022 GSFC Conference Paper
Propulsive trajectory optimization to minimize surface contamination
MOTIVATION: We present an optimization technique for propulsive vehicles that autonomously minimizes contamination during surface approach and landing.
- arXiv 2022 ARXIV arXiv preprint
Multirate Partitioned Runge-Kutta Methods for Coupled Navier-Stokes Equations
Earth system models are complex integrated models of atmosphere, ocean, sea ice, and land surface. Coupling the components can be a significant challenge due to the difference in physics, temporal, and spatial scales.
- arXiv 2022 ARXIV arXiv preprint
RMF-Owl: A Collision-Tolerant Flying Robot for Autonomous Subterranean Exploration
This work presents the design, hardware realization, autonomous exploration and object detection capabilities of RMF-Owl, a new collision-tolerant aerial robot tailored for resilient autonomous subterranean exploration.
- Semantic Scholar 2022 Article (Aeronautical Journal)
Design of simulation-based pilot training systems using machine learning agents
The high operational cost of aircraft, limited availability of air space, and strict safety regulations make training of fighter pilots increasingly challenging.
- arXiv 2022 ARXIV arXiv preprint
Detection of Stealthy Adversaries for Networked Unmanned Aerial Vehicles*
A network of unmanned aerial vehicles (UAVs) provides distributed coverage, reconfigurability, and maneuverability in performing complex cooperative tasks.
- arXiv 2022 ARXIV arXiv preprint
Soft Actor-Critic Deep Reinforcement Learning for Fault Tolerant Flight Control
Fault-tolerant flight control faces challenges, as developing a model-based controller for each unexpected failure is unrealistic, and online learning methods can handle limited system complexity due to their low sample …
- arXiv 2022 ARXIV arXiv preprint
Graph Neural Network-Based Scheduling for Multi-UAV-Enabled Communications in D2D Networks
In this paper, we jointly design the power control and position dispatch for Multi-unmanned aerial vehicle (UAV)-enabled communication in device-to-device (D2D) networks.
- arXiv 2022 ARXIV arXiv preprint
Multicasting in NOMA-Based UAV Networks: Path Design and Throughput Maximization
In this paper, we propose a new resource allocation framework for unmanned aerial vehicle (UAV) assisted multicast wireless networks in which the network users according to their request are divided into several multicas…
- arXiv 2022 ARXIV arXiv preprint
Optimization-based Trajectory Tracking Approach for Multi-rotor Aerial Vehicles in Unknown Environments
The goal of this paper is to develop a continuous optimization-based refinement of the reference trajectory to 'push it out' of the obstacle-occupied space in the global phase for Multi-rotor Aerial Vehicles in unknown e…
- NASA NTRS 2022 MSFC Conference Paper
Application of Support Vector Regression to Derive Crater Depth/Diameter From Satellite Images
Through the study of impact crater shapes, one can draw important conclusions about the nature and evolution of planetary surfaces [e.g., 1-4].In particular, studying the depth (d) to diameter (D)ratio (d/D) of a populat…
- arXiv 2022 ARXIV arXiv preprint
Air-Releasable Soft Robots for Explosive Ordnance Disposal
The demining of landmines using drones is challenging; air-releasable payloads are typically non-intelligent (e.g., water balloons or explosives) and deploying them at even low altitudes (~6 meter) is inherently inaccura…
- arXiv 2022 ARXIV arXiv preprint
3D Map Reconstruction of an Orchard using an Angle-Aware Covering Control Strategy
In the last years, unmanned aerial vehicles are becoming a reality in the context of precision agriculture, mainly for monitoring, patrolling and remote sensing tasks, but also for 3D map reconstruction.
- arXiv 2022 ARXIV arXiv preprint
Exponentially Stable Adaptive Control of MIMO Systems with Unknown Control Matrix
The scope of this research is a problem of the direct model reference adaptive control of linear time-invariant multi-input multi-output (MIMO) plants without any a priori knowledge about system matrices.
- Semantic Scholar 2022 Article (Journal of Power Sources)
Performance and failure analysis of a retrofitted Cessna aircraft with a Fuel Cell Power System fuelled with liquid hydrogen
- Semantic Scholar 2022 Article (International Journal of Environmental Research and Public Health)
Preliminary Effectiveness of mHealth App-Based Pelvic Floor Muscle Training among Pregnant Women to Improve Their Exercise Adherence: A Pilot Randomised Control Trial
This pilot randomised control trial (RCT) aimed to evaluate the feasibility and preliminary effectiveness of conducting a full-powered trial for a newly developed pelvic floor muscle training (PFMT) app among pregnant wo…
- arXiv 2022 ARXIV arXiv preprint
Modular Multi-Rotors: From Quadrotors to Fully-Actuated Aerial Vehicles
Traditional aerial vehicles are constrained to perform specific tasks due to their adhoc designs. Based on modularity, we propose a versatile robot, H-ModQuad, that can adapt to different tasks by increasing its load cap…
- arXiv 2022 ARXIV arXiv preprint
How winds and ocean currents influence the drift of floating objects
Arctic icebergs, unconstrained sea ice floes, oil slicks, mangrove drifters, lost cargo containers, and other flotsam are known to move at 2-4% of the prevailing wind velocity relative to the water, despite vast differen…
- arXiv 2022 ARXIV arXiv preprint
A Regret Minimization Approach to Multi-Agent Control
We study the problem of multi-agent control of a dynamical system with known dynamics and adversarial disturbances. Our study focuses on optimal control without centralized precomputed policies, but rather with adaptive …