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 2025 ARXIV arXiv preprint
Integrated Take-off Management and Trajectory Optimization for Merging Control in Urban Air Mobility Corridors
Urban Air Mobility (UAM) has the potential to revolutionize daily transportation, offering rapid and efficient aerial mobility services.
- arXiv 2025 ARXIV arXiv preprint
Fair-CoPlan: Negotiated Flight Planning with Fair Deconfliction for Urban Air Mobility
Urban Air Mobility (UAM) is an emerging transportation paradigm in which Uncrewed Aerial Systems (UAS) autonomously transport passengers and goods in cities.
- arXiv 2025 ARXIV arXiv preprint
Towards Fully Onboard State Estimation and Trajectory Tracking for UAVs with Suspended Payloads
This paper addresses the problem of tracking the position of a cable-suspended payload carried by an unmanned aerial vehicle, with a focus on real-world deployment and minimal hardware requirements.
- arXiv 2025 ARXIV arXiv preprint
A Structured Framework for Prioritizing Unsafe Control Actions in STPA: Case Study on eVTOL Operations
Systems Theoretic Process Analysis (STPA) is a widely recommended method for analysing complex system safety. STPA can identify numerous Unsafe Control Actions (UCAs) and requirements depending on the level of granularit…
- arXiv 2025 ARXIV arXiv preprint
Shepherd Grid Strategy: Towards Reliable SWARM Interception
Modern unmanned aerial vehicle threats require sophisticated interception strategies that can overcome advanced evasion capabilities and operate effectively in contested environments.
- arXiv 2025 ARXIV arXiv preprint
Autonomous Air-Ground Vehicle Operations Optimization in Hazardous Environments: A Multi-Armed Bandit Approach
Hazardous environments such as chemical spills, radiological zones, and bio-contaminated sites pose significant threats to human safety and public infrastructure.
- arXiv 2025 ARXIV arXiv preprint
On the attenuation of waves through broken ice of randomly-varying thickness on water of finite depth
The recent work of Dafydd and Porter [2024] on the attenuation of waves propagating through floating broken ice of random thickness is extended to consider water of non-shallow depth.
- arXiv 2025 ARXIV arXiv preprint
Slantwise convection and heat transport in icy moon oceans
Ocean heat transport on icy moons shapes the ice shell topography, a primary observable of these moons. Two key processes control the heat transport: baroclinic instability driven by surface buoyancy contrasts and convec…
- arXiv 2025 ARXIV arXiv preprint
Numerical study of freezing efficiency for a moving droplet in the microchannel
In microfluidic devices, droplets serving as carriers for chemical reactors or biomass can form stably encapsulated particles during the freezing process, holding significant importance in pharmaceuticals and microchemic…
- arXiv 2025 ARXIV arXiv preprint
Variational mode decomposition analysis of the relationship between low-frequency shock-wave oscillations and buffet cells
This study investigates the relationship between low-frequency shock-wave oscillations and buffet cells on the main wing of the NASA common research model.
- arXiv 2025 ARXIV arXiv preprint
CASH: Context-Aware Smart Handover for Reliable UAV Connectivity on Aerial Corridors
Urban Air Mobility (UAM) envisions aerial corridors for Unmanned Aerial Vehicles (UAVs) to reduce ground traffic congestion by supporting 3D mobility, such as air taxis.
- arXiv 2025 ARXIV arXiv preprint
Aerobatic maneuvers in insect-scale flapping-wing aerial robots via deep-learned robust tube model predictive control
Aerial insects exhibit highly agile maneuvers such as sharp braking, saccades, and body flips under disturbance. In contrast, insect-scale aerial robots are limited to tracking non-aggressive trajectories with small body…
- arXiv 2025 ARXIV arXiv preprint
Trusted Routing for Blockchain-Empowered UAV Networks via Multi-Agent Deep Reinforcement Learning
Due to the high flexibility and versatility, unmanned aerial vehicles (UAVs) are leveraged in various fields including surveillance and disaster rescue.However, in UAV networks, routing is vulnerable to malicious damage …
- arXiv 2025 ARXIV arXiv preprint
Numerical investigation of engine position effects on contrail formation and evolution in the near-field of a realistic aircraft configuration
The present study investigates the impact of engine position on contrail formation and near-field evolution in a realistic three-dimensional aircraft configuration.
- arXiv 2025 ARXIV arXiv preprint
A Unified Finite-Time Sliding Mode Quaternion-based Tracking Control for Quadrotor UAVs without Time Scale Separation
This paper presents a novel design for finite-time position control of quadrotor Unmanned Aerial Vehicles (UAVs). A robust, finite-time, nonlinear feedback controller is introduced to reject bounded disturbances in track…
- arXiv 2025 ARXIV arXiv preprint
Radio Map Assisted Routing and Predictive Resource Allocation over Dynamic Low Altitude Networks
Dynamic low altitude networks offer significant potential for efficient and reliable data transport via unmanned aerial vehicles (UAVs) relays which usually operate with predetermined trajectories.
- arXiv 2025 ARXIV arXiv preprint
Trusted Data Fusion, Multi-Agent Autonomy, Autonomous Vehicles
Multi-agent collaboration enhances situational awareness in intelligence, surveillance, and reconnaissance (ISR) missions. Ad hoc networks of unmanned aerial vehicles (UAVs) allow for real-time data sharing, but they fac…
- arXiv 2025 ARXIV arXiv preprint
Constrained Control Allocation With Continuous-Time Rate Constraints: Three-Dimensional Case
This paper presents a novel quadratic programming (QP) approach for constrained control allocation that directly incorporates continuous-time actuator rate constraints without requiring slack variables.
- arXiv 2025 ARXIV arXiv preprint
Multi-Strategy Improved Snake Optimizer Accelerated CNN-LSTM-Attention-Adaboost for Trajectory Prediction
To address the limitations of medium- and long-term four-dimensional (4D) trajectory prediction models, this paper proposes a hybrid CNN-LSTM-attention-adaboost neural network model incorporating a multi-strategy improve…
- arXiv 2025 ARXIV arXiv preprint
A numerical investigation of sweep effects on turbulent flow over iced wings
This study employs an improved delayed detached eddy simulation (AMD-IDDES) method to investigate the flow characteristics of an iced swept wing.
- arXiv 2025 ARXIV arXiv preprint
Breakup cascade in gas filament
Despite its importance in both geophysical and industrial contexts, the inertial fragmentation of gas filaments has received much less attention than their liquid counterparts.
- arXiv 2025 ARXIV arXiv preprint
Beyond Visual Line of Sight: UAVs with Edge AI, Connected LLMs, and VR for Autonomous Aerial Intelligence
Unmanned Aerial Vehicles are reshaping Non-Terrestrial Networks by acting as agile, intelligent nodes capable of advanced analytics and instantaneous situational awareness.
- arXiv 2025 ARXIV arXiv preprint
UAV-Enabled Wireless-Powered Underground Communication Networks: A Novel Time Allocation Approach
Wireless-powered underground communication networks (WPUCNs), which allow underground devices (UDs) to harvest energy from wireless signals for battery-free communication, offer a promising solution for sustainable under…
- arXiv 2025 ARXIV arXiv preprint
Real-Time Communication-Aware Ride-Sharing Route Planning for Urban Air Mobility: A Multi-Source Hybrid Attention Reinforcement Learning Approach
Urban Air Mobility (UAM) systems are rapidly emerging as promising solutions to alleviate urban congestion, with path planning becoming a key focus area.
- arXiv 2025 ARXIV arXiv preprint
QTCAJOSA: Low-Complexity Joint Offloading and Subchannel Allocation for NTN-Enabled IoMT
In this work, we consider the resource allocation problem for task offloading from Internet of Medical Things (IoMT) devices, to a non-terrestrial network.
- arXiv 2025 ARXIV arXiv preprint
Impact of Forecast Stability on Navigational Contrail Avoidance
MMitigating contrail-induced warming by re-routing flights around contrail-forming regions requires accurate and stable forecasts of the state of the upper troposphere and lower stratosphere.
- arXiv 2025 ARXIV arXiv preprint
Computing Longitudinal Dynamic Derivatives of a VTOL Aircraft Using CFD Simulations and Forced-Oscillation Model
This study presents a comprehensive evaluation of dynamic aerodynamic derivatives during aircraft transition phases using advanced CFD simulations and forced oscillation testing.
- arXiv 2025 ARXIV arXiv preprint
UavNetSim-v1: A Python-based Simulation Platform for UAV Communication Networks
In unmanned aerial vehicle (UAV) networks, communication protocols and algorithms are essential for cooperation and collaboration between UAVs.
- arXiv 2025 ARXIV arXiv preprint
Unmanned Aerial Vehicle (UAV) Data-Driven Modeling Software with Integrated 9-Axis IMUGPS Sensor Fusion and Data Filtering Algorithm
Unmanned Aerial Vehicles (UAV) have emerged as versatile platforms, driving the demand for accurate modeling to support developmental testing. This paper proposes data-driven modeling software for UAV.
- arXiv 2025 ARXIV arXiv preprint
SkyVLN: Vision-and-Language Navigation and NMPC Control for UAVs in Urban Environments
Unmanned Aerial Vehicles (UAVs) have emerged as versatile tools across various sectors, driven by their mobility and adaptability. This paper introduces SkyVLN, a novel framework integrating vision-and-language navigatio…
- arXiv 2025 ARXIV arXiv preprint
Stacked Intelligent Metasurfaces-Aided eVTOL Delay Sensitive Communications
With rapid urbanization and increasing population density, urban traffic congestion has become a critical issue, and traditional ground transportation methods are no longer sufficient to address it effectively.
- arXiv 2025 ARXIV arXiv preprint
Free-Space Optical Communication-Driven NMPC Framework for Multi-Rotor Aerial Vehicles in Structured Inspection Scenarios
This paper introduces a Nonlinear Model Predictive Control (NMPC) framework for communication-aware motion planning of Multi-Rotor Aerial Vehicles (MRAVs) using Free-Space Optical (FSO) links.
- arXiv 2025 ARXIV arXiv preprint
Temporally smoothed incremental model-based heuristic dynamic programming for command-filtered cascaded online learning flight control
Approximate Dynamic Programming (ADP) enables online adaptation of control laws through adaptive critic methods. However, its application to online learning Angle-of-Attack (AoA) tracking control remains challenging due …
- arXiv 2025 ARXIV arXiv preprint
Optimizing Age of Trust and Throughput in Multi-Hop UAV-Aided IoT Networks
Devices operating in Internet of Things (IoT) networks may be deployed across vast geographical areas and interconnected via multi-hop communications. Further, they may be unguarded.
- arXiv 2025 ARXIV arXiv preprint
Airspeed estimation for UAVs using only propeller feedback
This work introduces a novel analytical model for estimating the airspeed of fixed-wing Unmanned Aerial Vehicles (UAVs) using solely propeller power and rotational speed measurements.
- arXiv 2025 ARXIV arXiv preprint
Sphereabout: A Spherical Intersection Design for Networked Urban Air Mobility
Urban aerial mobility is rapidly expanding, specifically on-demand Unmanned Aerial Vehicle (UAV) delivery services in urban environments.
- arXiv 2025 ARXIV arXiv preprint
Structure and flow of low-dimensional water
Water, a subject of human fascination for millennia, is likely the most studied substance on Earth, with an entire scientific field -- hydrodynamics -- dedicated to understanding water in motion.
- arXiv 2025 ARXIV arXiv preprint
Sea ice aging by diffusion-driven desalination
Sea ice is a key component of the Earth's climate system, making its aging process an essential focus of current research. The age of sea ice is closely linked to its thermal and mechanical properties, which govern its i…
- NASA NTRS 2025 ARC Conference Paper
Uncovering Resilient Behavior in the Aviation Safety Reporting System Using Large Language Models
Resiliency is present in everyday life, both in system design and exhibited by the operators that function within these systems. This includes the National Airspace System (NAS) where pilots and controllers make positive…
- arXiv 2025 ARXIV arXiv preprint
On beam characterization of ground-based CMB radio telescopes using UAV-mounted sources: application to the QUIJOTE TFGI and plans for LSPE-Strip
The Large Scale Polarization Explorer (LSPE) project, funded by the Italian Space Agency (ASI), includes the development of LSPE-Strip, a ground-based radio telescope for observing Cosmic Microwave Background (CMB) aniso…
- arXiv 2025 ARXIV arXiv preprint
Spherical Pendulum with Quad-Rotor Thrust Vectoring Actuation -- A Novel Mechatronics and Control Benchmark Platform
Motor-actuated pendulums have been established as arguably the most common laboratory prototypes used in control system education because of the relevance to robot manipulator control in industry.
- NASA NTRS 2025 ARC Presentation
Lessons Learned: m:N Operations in the Application of UTM for Hurricane Rescue
The Human Autonomy Teaming (HAT) Lab at NASA Ames Research Center conducted a study using small uncrewed aircraft systems (sUAS, or drones) in a post-hurricane rescue mission, utilizing an uncrewed aircraft system traffi…
- arXiv 2025 ARXIV arXiv preprint
Task Allocation of UAVs for Monitoring Missions via Hardware-in-the-Loop Simulation and Experimental Validation
This study addresses the optimisation of task allocation for Unmanned Aerial Vehicles (UAVs) within industrial monitoring missions. The proposed methodology integrates a Genetic Algorithms (GA) with a 2-Opt local search …
- arXiv 2025 ARXIV arXiv preprint
Cooperative Sensing and Communication Beamforming Design for Low-Altitude Economy
To empower the low-altitude economy with high-accuracy sensing and high-rate communication, this paper proposes a cooperative integrated sensing and communication (ISAC) framework for aerial-ground networks.
- arXiv 2025 ARXIV arXiv preprint
Real-Time Obstacle Avoidance Algorithms for Unmanned Aerial and Ground Vehicles
The growing use of mobile robots in sectors such as automotive, agriculture, and rescue operations reflects progress in robotics and autonomy.
- arXiv 2025 ARXIV arXiv preprint
Flutter Suppression Enhancement in Coupled Nonlinear Airfoils with Intermittent Mixed Interactions
Flutter suppression facilitates the improvement of structural reliability to ensure the flight safety of an aircraft. In this study, we propose a novel strategy for enlarging amplitude death (AD) regime to enhance flutte…
- arXiv 2025 ARXIV arXiv preprint
Comparing the dynamics of idealized squall lines between NWP and LES models
Both Numerical Weather Prediction (NWP) models and Large-Eddy Simulation (LES) models are used to simulate convective systems, such as squall lines, but with different purposes.
- arXiv 2025 ARXIV arXiv preprint
Low-Cost Infrastructure-Free 3D Relative Localization with Sub-Meter Accuracy in Near Field
Relative localization in the near-field scenario is critically important for unmanned vehicle (UxV) applications. Although related works addressing 2D relative localization problem have been widely studied for unmanned g…
- arXiv 2025 ARXIV arXiv preprint
G-SEED: A Spatio-temporal Encoding Framework for Forest and Grassland Data Based on GeoSOT
In recent years, the rapid development of remote sensing, Unmanned Aerial Vehicles, and IoT technologies has led to an explosive growth in spatio-temporal forest and grassland data, which are increasingly multimodal, het…
- arXiv 2025 ARXIV arXiv preprint
Collective effects of neighbouring melting ice objects
We present a study on the melting dynamics of neighbouring ice bodies by means of idealised simulations, focusing on collective effects, with the goal of obtaining fundamental insight into how collective interactions inf…