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 2024 ARXIV arXiv preprint
Improving Disturbance Estimation and Suppression via Learning among Systems with Mismatched Dynamics
Iterative learning control (ILC) is a method for reducing system tracking or estimation errors over multiple iterations by using information from past iterations.
- arXiv 2024 ARXIV arXiv preprint
A competitive game optimization algorithm for Unmanned Aerial Vehicle path planning
To solve the Unmanned Aerial Vehicle (UAV) path planning problem, a meta-heuristic optimization algorithm called competitive game optimizer (CGO) is proposed.
- arXiv 2024 ARXIV arXiv preprint
AAM-VDT: Vehicle Digital Twin for Tele-Operations in Advanced Air Mobility
This study advanced tele-operations in Advanced Air Mobility (AAM) through the creation of a Vehicle Digital Twin (VDT) system for eVTOL aircraft, tailored to enhance remote control safety and efficiency, especially for …
- arXiv 2024 ARXIV arXiv preprint
Turbulent ice-ocean boundary layers in the well-mixed regime: insights from direct numerical simulations
The meltwater mixing line (MML) model provides a theoretical prediction of near-ice water mass properties that is useful to compare with observations.
- arXiv 2024 ARXIV arXiv preprint
Pair statistics of oblate spheroids settling in a turbulent flow
We perform direct numerical simulations of sub-Kolmogorov, inertial spheroids settling under gravity in homogeneous, isotropic turbulence and find that small-scale clustering, measured via the correlation dimension, depe…
- arXiv 2024 ARXIV arXiv preprint
MPC Based Linear Equivalence with Control Barrier Functions for VTOL-UAVs
In this work, we propose a cascaded scheme of linear Model prediction Control (MPC) based on Control Barrier Functions (CBF) with Dynamic Feedback Linearization (DFL) for Vertical Take-off and Landing (VTOL) Unmanned Aer…
- arXiv 2024 ARXIV arXiv preprint
A Model Predictive Control Scheme for Flight Scheduling and Energy Management of Electric Aviation Networks
This paper presents a Model Predictive Control (MPC) scheme for flight scheduling and energy management of electric aviation networks, where electric aircraft transport passengers between electrified airports equipped wi…
- arXiv 2024 ARXIV arXiv preprint
Prescribing Optimal Health-Aware Operation for Urban Air Mobility with Deep Reinforcement Learning
Urban Air Mobility (UAM) aims to expand existing transportation networks in metropolitan areas by offering short flights either to transport passengers or cargo.
- arXiv 2024 ARXIV arXiv preprint
A Lagrangian meshfree model for solidification of liquid thin-films
In this paper, a new method to model solidification of thin liquid films is proposed. \blue{This method is targeted at applications like aircraft icing and tablet coating where the formation of liquid films from impingin…
- Semantic Scholar 2024 Article (Future Transportation)
The Impact of Artificial Intelligence on Future Aviation Safety Culture
Artificial intelligence is developing at a rapid pace, with examples of machine learning already being used in aviation to improve efficiency.
- arXiv 2024 ARXIV arXiv preprint
Securing the Skies: An IRS-Assisted AoI-Aware Secure Multi-UAV System with Efficient Task Offloading
Unmanned Aerial Vehicles (UAVs) are integral in various sectors like agriculture, surveillance, and logistics, driven by advancements in 5G.
- arXiv 2024 ARXIV arXiv preprint
A Two Time-Scale Joint Optimization Approach for UAV-assisted MEC
Unmanned aerial vehicles (UAV)-assisted mobile edge computing (MEC) is emerging as a promising paradigm to provide aerial-terrestrial computing services close to mobile devices (MDs).
- arXiv 2024 ARXIV arXiv preprint
Self-organized free-flight arrival for urban air mobility
Urban air mobility is an innovative mode of transportation in which electric vertical takeoff and landing (eVTOL) vehicles operate between nodes called vertiports.
- Semantic Scholar 2024 Article (Mathematics)
Aerodynamic Performance and Numerical Analysis of the Coaxial Contra-Rotating Propeller Lift System in eVTOL Vehicles
Electric vertical takeoff and landing (eVTOL) vehicles possess high payload transportation capabilities and compact design features. The traditional method of increasing propeller size to cope with high payload is no lon…
- arXiv 2024 ARXIV arXiv preprint
Orchestrating UAVs for Prioritized Data Harvesting: A Cross-Layer Optimization Perspective
This work describes the orchestration of a fleet of rotary-wing Unmanned Aerial Vehicles (UAVs) for harvesting prioritized traffic from random distributions of heterogeneous users with Multiple Input Multiple Output (MIM…
- SKYbrary (Eurocontrol) 2024 SKYBRARY SKYbrary article
Runway Excursion — SKYbrary Knowledge Base
SKYbrary runway excursion review — RE-OE (overruns) + RE-LO (lateral). Risk drivers: long landing, high approach speed, contaminated surface, tailwind, mis-set autobrakes.
- arXiv 2024 ARXIV arXiv preprint
AirPilot: Interpretable PPO-based DRL Auto-Tuned Nonlinear PID Drone Controller for Robust Autonomous Flights
Navigation precision, speed and stability are crucial for safe Unmanned Aerial Vehicle (UAV) flight maneuvers and effective flight mission executions in dynamic environments.
- NASA NTRS 2024 LaRC Presentation
American Airlines Flight 587 Crash Investigation: NASA Langley Research Center Participation and Perspective
- arXiv 2024 ARXIV arXiv preprint
An enthalpy-based model for the physics of ice crystal icing
Ice crystal icing (ICI) in aircraft engines is a major threat to flight safety. Due to the complex thermodynamic and phase-change conditions involved in ICI, rigorous modelling of the accretion process remains limited.
- arXiv 2024 ARXIV arXiv preprint
Advanced Algorithms for Autonomous Guidance of Solar-powered UAVs
Unmanned aerial vehicle (UAV) techniques have developed rapidly within the past few decades. Using UAVs provides benefits in numerous applications such as site surveying, communication systems, parcel delivery, target tr…
- arXiv 2024 ARXIV arXiv preprint
FPGA-Based Neural Thrust Controller for UAVs
The advent of unmanned aerial vehicles (UAVs) has improved a variety of fields by providing a versatile, cost-effective and accessible platform for implementing state-of-the-art algorithms.
- arXiv 2024 ARXIV arXiv preprint
Incentive-Compatible Vertiport Reservation in Advanced Air Mobility: An Auction-Based Approach
The rise of advanced air mobility (AAM) is expected to become a multibillion-dollar industry in the near future. Market-based mechanisms are touted to be an integral part of AAM operations, which comprise heterogeneous o…
- arXiv 2024 ARXIV arXiv preprint
UAV Corridor Coverage Analysis with Base Station Antenna Uptilt and Strongest Signal Association
Unmanned aerial vehicle (UAV) corridors are sky lanes where UAVs fly through safely between their origin and destination. To ensure the successful operation of UAV corridors, beyond visual line of sight (BVLOS) wireless …
- arXiv 2024 ARXIV arXiv preprint
Demand and Capacity Modeling for Advanced Air Mobility
Advanced Air Mobility encompasses emerging aviation technologies that transport people and cargo between local, regional, or urban locations that are currently underserved by aviation and other transportation modalities.…
- arXiv 2024 ARXIV arXiv preprint
A unified kinematic wave theory for melt infiltration into firn
Motivated by the refreezing of melt water in firn we revisit the one-dimensional percolation of liquid water and non-reactive gas in porous ice.
- arXiv 2024 ARXIV arXiv preprint
TJCCT: A Two-timescale Approach for UAV-assisted Mobile Edge Computing
Unmanned aerial vehicle (UAV)-assisted mobile edge computing (MEC) is emerging as a promising paradigm to provide aerial-terrestrial computing services in close proximity to mobile devices (MDs).
- arXiv 2024 ARXIV arXiv preprint
Gesture-Controlled Aerial Robot Formation for Human-Swarm Interaction in Safety Monitoring Applications
This paper presents a formation control approach for contactless gesture-based Human-Swarm Interaction (HSI) between a team of multi-rotor Unmanned Aerial Vehicles (UAVs) and a human worker.
- arXiv 2024 ARXIV arXiv preprint
TEeVTOL: Balancing Energy and Time Efficiency in eVTOL Aircraft Path Planning Across City-Scale Wind Fields
Electric vertical-takeoff and landing (eVTOL) aircraft, recognized for their maneuverability and flexibility, offer a promising alternative to our transportation system.
- arXiv 2024 ARXIV arXiv preprint
Combining Local and Global Perception for Autonomous Navigation on Nano-UAVs
A critical challenge in deploying unmanned aerial vehicles (UAVs) for autonomous tasks is their ability to navigate in an unknown environment.
- arXiv 2024 ARXIV arXiv preprint
A Data-driven Approach for Rapid Detection of Aeroelastic Modes from Flutter Flight Test Based on Limited Sensor Measurements
Flutter flight test involves the evaluation of the airframes aeroelastic stability by applying artificial excitation on the aircraft lifting surfaces.
- arXiv 2024 ARXIV arXiv preprint
Air Traffic Management for Collaborative Routing of Unmanned Aerial Vehicles via Potential Fields
Aerial cargo transport is anticipated to play a pivotal role in the distribution of goods within urban environments. The shift is propelled by the surge in e-commerce, the imperative to deliver essential supplies to isol…
- arXiv 2024 ARXIV arXiv preprint
PyroTrack: Belief-Based Deep Reinforcement Learning Path Planning for Aerial Wildfire Monitoring in Partially Observable Environments
Motivated by agility, 3D mobility, and low-risk operation compared to human-operated management systems of autonomous unmanned aerial vehicles (UAVs), this work studies UAV-based active wildfire monitoring where a UAV de…
- arXiv 2024 ARXIV arXiv preprint
Quaternion-Based Sliding Mode Control for Six Degrees of Freedom Flight Control of Quadrotors
Despite extensive research on sliding mode control (SMC) design for quadrotors, the existing approaches suffer from certain limitations.
- arXiv 2024 ARXIV arXiv preprint
Fault Detection and Tolerant Control for Aero2 2D0F Two-rotor Helicopter
Stability and satisfactory performance are critical control requirements for Unmanned Aerial Vehicle (UAV) applications. While conventional control systems for UAVs aim to ensure flight stability and safe operation while…
- NASA NTRS 2024 ARC Presentation
Space Transport and Fatigue
Space travel presents numerous challenges to fatigue management. Fatigue in space results from many of the same challenges that shiftworkers face on Earth, including inadequate sleep, circadian misalignment, and elevated…
- NASA NTRS 2024 ARC Presentation
UTM Public Operators Outreach: Drone Responders
NASA is working with Industry and FAA to enable beyond visual line of sight (BVLOS) unmanned aerial systems (UAS) operations wherever it is needed.
- arXiv 2024 ARXIV arXiv preprint
Modulational instability of nonuniformly damped, broad-banded waves: applications to waves in sea-ice
This paper sets out to explore the modulational (or Benjamin-Feir) instability of a monochromatic wave propagating in the presence of damping such as that induced by sea-ice on the ocean surface.
- arXiv 2024 ARXIV arXiv preprint
Edge Information Hub: Orchestrating Satellites, UAVs, MEC, Sensing and Communications for 6G Closed-Loop Controls
An increasing number of field robots would be used for mission-critical tasks in remote or post-disaster areas. Due to the limited individual abilities, these robots usually require an edge information hub (EIH), with no…
- arXiv 2024 ARXIV arXiv preprint
Model-Predictive Trajectory Generation for Aerial Search and Coverage
This paper introduces a trajectory planning algorithm for search and coverage missions with an Unmanned Aerial Vehicle (UAV) based on an uncertainty map that represents prior knowledge of the target region, modeled by a …
- arXiv 2024 ARXIV arXiv preprint
RIS-empowered Topology Control for Distributed Learning in Urban Air Mobility
Urban Air Mobility (UAM) expands vehicles from the ground to the near-ground space, envisioned as a revolution for transportation systems. Comprehensive scene perception is the foundation for autonomous aerial driving.
- arXiv 2024 ARXIV arXiv preprint
Freezing delay of a drop impacting on a monolayer of cold grains
We investigate a subfreezing droplet impact scenario in a low-humidity environment, where the target is a cold granular monolayer. When the undercooling degree of targets passes a threshold, such a granular layer effecti…
- arXiv 2024 ARXIV arXiv preprint
Blockchain-Enhanced UAV Networks for Post-Disaster Communication: A Decentralized Flocking Approach
Unmanned Aerial Vehicles (UAVs) have significant potential for agile communication and relief coordination in post-disaster scenarios, particularly when ground infrastructure is compromised.
- arXiv 2024 ARXIV arXiv preprint
Collision Avoidance and Geofencing for Fixed-wing Aircraft with Control Barrier Functions
Safety-critical failures often have fatal consequences in aerospace control. Control systems on aircraft, therefore, must ensure the strict satisfaction of safety constraints, preferably with formal guarantees of safe be…
- arXiv 2024 ARXIV arXiv preprint
Secure and Energy-efficient Unmanned Aerial Vehicle-enabled Visible Light Communication via A Multi-objective Optimization Approach
In this research, a unique approach to provide communication service for terrestrial receivers via using unmanned aerial vehicle-enabled visible light communication is investigated.
- arXiv 2024 ARXIV arXiv preprint
Resilient Mobile Energy Storage Resources Based Distribution Network Restoration in Interdependent Power-Transportation-Information Networks
The interactions between power, transportation, and information networks (PTIN), are becoming more profound with the advent of smart city technologies.
- Semantic Scholar 2024 Article (Journal of Physics, Conference Series)
Energy management of an eVTOL aircraft with optimization based on the Equivalent Consumption Minimization Strategy (ECMS)
This article introduces an optimization-based energy management strategy developed and validated for electric vertical take-off and landing (eVTOL) aircraft.
- arXiv 2024 ARXIV arXiv preprint
Autonomous Strike UAVs for Counterterrorism Missions: Challenges and Preliminary Solutions
Unmanned Aircraft Vehicles (UAVs) are becoming a crucial tool in modern warfare, primarily due to their cost-effectiveness, risk reduction, and ability to perform a wider range of activities.
- Flight Safety Foundation 2024 FSF FSF / AeroSafety World
Helicopter Safety Performance Data 2023
Foundation 2023 helicopter safety performance data — global accident rates by mission profile (HEMS, off-shore oil, air-tour, agricultural, news/utility). Year-over-year trends + region-specific findings.
- SKYbrary (Eurocontrol) 2024 SKYBRARY SKYbrary article
TCAS — Traffic Alert and Collision Avoidance System
SKYbrary TCAS comprehensive article — TCAS-II 7.1 logic, RA execution standards, controller-pilot coordination during RA, ACAS-X next-generation transition.
- Semantic Scholar 2024 Article (Aerospace)
A Decentralized Voting and Monitoring Flight Control Actuation System for eVTOL Aircraft
The emergence of eVTOL (electrical Vertical Takeoff and Landing) aircraft necessitates the development of safe and efficient systems to meet stringent certification and operational requirements.