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 2021 ARXIV arXiv preprint
Aerial Map-Based Navigation Using Semantic Segmentation and Pattern Matching
This paper proposes a novel approach to map-based navigation system for unmanned aircraft. The proposed system attempts label-to-label matching, not image-to-image matching, between aerial images and a map database.
- arXiv 2021 ARXIV arXiv preprint
Formal verification of octorotor flight envelope using barrier functions and SMT solving
This paper introduces an approach for formally verifying the safety of the flight controller of an octorotor platform. Our method involves finding regions of the octorotor's state space that are considered safe, and whic…
- AOPA Air Safety Institute 2021 AOPA-ASI Safety advisor
Safety Advisor: Mountain Flying
Safety advisor on mountain flying technique: density altitude effects on takeoff and climb performance, downdraft and mountain-wave avoidance, canyon-turn technique, and route-planning for terrain clearance.
- arXiv 2021 ARXIV arXiv preprint
Increasing stable time-step sizes of the free-surface problem arising in ice-sheet simulations
Numerical models for predicting future ice-mass loss of the Antarctic and Greenland ice sheet requires accurately representing their dynamics.
- arXiv 2021 ARXIV arXiv preprint
Model Predictive Control for Trajectory Tracking on Differentiable Manifolds
We consider the problem of bridging the gap between geometric tracking control theory and implementation of model predictive control (MPC) for robotic systems operating on manifolds.
- arXiv 2021 ARXIV arXiv preprint
UAV-assisted Online Machine Learning over Multi-Tiered Networks: A Hierarchical Nested Personalized Federated Learning Approach
We investigate training machine learning (ML) models across a set of geo-distributed, resource-constrained clusters of devices through unmanned aerial vehicles (UAV) swarms.
- arXiv 2021 ARXIV arXiv preprint
Disconnectivity-Aware Energy-Efficient Cargo-UAV Trajectory Planning with Minimum Handoffs
On-board battery consumption, cellular disconnectivity, and frequent handoff are key challenges for unmanned aerial vehicle (UAV) based delivery missions, a.k.a., cargo-UAV.
- arXiv 2021 ARXIV arXiv preprint
Joint Mobile Charging and Coverage-Time Extension for Unmanned Aerial Vehicles
In modern networks, the use of drones as mobile base stations (MBSs) has been discussed for coverage flexibility. However, the realization of drone-based networks raises several issues.
- arXiv 2021 ARXIV arXiv preprint
Diffusion of gravity waves by random space inhomogeneities in pancake-ice fields. Theory and validation with wave buoys and synthetic aperture radar
We study the diffusion of ocean waves by ice bodies much smaller than a wavelength, such as pancakes and small ice floes. We argue that inhomogeneities in the ice cover at scales comparable to that of the wavelength sign…
- arXiv 2021 ARXIV arXiv preprint
Obstacle Detection for BVLOS Drones
With the introduction of new regulations in the European Union, the future of Beyond Visual Line Of Sight (BVLOS) drones is set to bloom.
- arXiv 2021 ARXIV arXiv preprint
Learning to Reach, Swim, Walk and Fly in One Trial: Data-Driven Control with Scarce Data and Side Information
We develop a learning-based control algorithm for unknown dynamical systems under very severe data limitations. Specifically, the algorithm has access to streaming and noisy data only from a single and ongoing trial.
- arXiv 2021 ARXIV arXiv preprint
The promise of energy-efficient battery-powered urban aircraft
Improvements in rechargeable batteries are enabling several electric urban air mobility (UAM) aircraft designs with up to 300 miles of range with payload equivalents of up to 7 passengers.
- arXiv 2021 ARXIV arXiv preprint
Nonlinear Trajectory-Based Region of Attraction Estimation for Aircraft Dynamics Analysis
Current flight control validation is heavily based on linear analysis and high fidelity, nonlinear simulations. Continuing developments of nonlinear analysis tools for flight control has greatly enhanced the validation p…
- arXiv 2021 ARXIV arXiv preprint
Dynamic Based Estimator for UAVs with Real-time Identification Using DNN and the Modified Relay Feedback Test
Control performance of Unmanned Aerial Vehicles (UAVs) is directly affected by their ability to estimate their states accurately. With the increasing popularity of autonomous UAV solutions in real world applications, it …
- Semantic Scholar 2021 Article (Journal of Advanced Transportation)
Identifying Incident Causal Factors to Improve Aviation Transportation Safety: Proposing a Deep Learning Approach
Aviation is a complicated transportation system, and safety is of paramount importance because aircraft failure often involves casualties. Prevention is clearly the best strategy for aviation transportation safety.
- NASA NTRS 2021 ARC Presentation
Sleep Obtained by Cabin Crewmembers during a Long-haul Flight
Sleep loss and circadian disruption pose a significant risk in safety-sensitive occupations. In aviation, many studies have demonstrated how inflight rest locations influence alertness and performance among pilots, but f…
- NASA NTRS 2021 LaRC Contractor Report (CR)
A Guide for Aircraft Certification by Analysis
Analysis-based means of compliance for airplane and engine certification, commonly known as "Certification by Analysis" (CbA), provides a strong motivation for the development and maturation of current and future flight …
- NASA NTRS 2021 LaRC Contractor Report (CR)
GA-ASI Final Report and Program Wrap-up for NASA System Integration and Operationalization (SIO)
The NASA SIO demonstration flight of April 3, 2020 represents a successful culmination of 18 months of coordinated effort between GA-ASI, NASA, the FAA, Collins Aerospace, and Honeywell Aerospace to operate a Medium Alti…
- NASA NTRS 2021 ARC Poster
Sleep, Sleepiness, and Performance Across Three In-Flight Bunk Rest Opportunities
Introduction: Airline pilots are required to take a rest break in a bunk during long-haul flights in an effort to reduce sleepiness during critical phases of flight.
- arXiv 2021 ARXIV arXiv preprint
AdaptSky: A DRL Based Resource Allocation Framework in NOMA-UAV Networks
Unmanned aerial vehicle (UAV) has recently attracted a lot of attention as a candidate to meet the 6G ubiquitous connectivity demand and boost the resiliency of terrestrial networks.
- arXiv 2021 ARXIV arXiv preprint
H-ModQuad: Modular Multi-Rotors with 4, 5, and 6 Controllable DOF
Traditional aerial vehicles are usually custom-designed for specific tasks. Although they offer an efficient solution, they are not always able to adapt to changes in the task specification, e.g., increasing the payload.…
- arXiv 2021 ARXIV arXiv preprint
Systematic Online Tuning of Multirotor UAVs for Accurate Trajectory Tracking Under Wind Disturbances and In-Flight Dynamics Changes
The demand for accurate and fast trajectory tracking for multirotor Unmanned Aerial Vehicles (UAVs) have grown recently due to advances in UAV avionics technology and application domains.
- arXiv 2021 ARXIV arXiv preprint
Full-Dimensional Rate Enhancement for UAV-Enabled Communications via Intelligent Omni-Surface
This paper investigates the achievable rate maximization problem of a downlink unmanned aerial vehicle (UAV)-enabled communication system aided by an intelligent omni-surface (IOS).
- arXiv 2021 ARXIV arXiv preprint
Experimental and computational comparison of freeze-thaw induced pressure generation in red and sugar maple
Sap exudation is the process whereby trees such as sugar (Acer saccharum) and red maple (Acer rubrum) generate unusually high positive stem pressure in response to repeated cycles of freeze and thaw.
- arXiv 2021 ARXIV arXiv preprint
Deep Reinforcement Learning-based UAV Navigation and Control: A Soft Actor-Critic with Hindsight Experience Replay Approach
In this paper, we propose SACHER (soft actor-critic (SAC) with hindsight experience replay (HER)), which constitutes a class of deep reinforcement learning (DRL) algorithms.
- NASA NTRS 2021 LaRC Presentation
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
Abstract—We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
- arXiv 2021 ARXIV arXiv preprint
UAV Aided Over-the-Air Computation
Over-the-air computation (AirComp) seamlessly integrates communication and computation by exploiting the waveform superposition property of multiple-access channels.
- arXiv 2021 ARXIV arXiv preprint
Development, Implementation, and Experimental Outdoor Evaluation of Quadcopter Controllers for Computationally Limited Embedded Systems
Quadcopters are increasingly used for applications ranging from hobby to industrial products and services. This paper serves as a tutorial on the design, simulation, implementation, and experimental outdoor testing of di…
- arXiv 2021 ARXIV arXiv preprint
Collision Recovery Control of a Foldable Quadrotor
Autonomous missions of small unmanned aerial vehicles (UAVs) are prone to collisions owing to environmental disturbances and localization errors.
- arXiv 2021 ARXIV arXiv preprint
A Closed-Loop Linear Covariance Framework for Vehicle Path Planning in a Static Uncertain Obstacle Fiel
Path planning in an uncertain environment is a key enabler of true vehicle autonomy. Over the past two decades, numerous approaches have been developed to account for errors in the vehicle path while navigating complex a…
- arXiv 2021 ARXIV arXiv preprint
Using a Drone Sounder to Measure Channels for Cell-Free Massive MIMO Systems
Measurements of the propagation channel form the basis of all realistic system performance evaluations, as foundation of statistical channel models or to verify ray tracing.
- arXiv 2021 ARXIV arXiv preprint
Distributed CNN Inference on Resource-Constrained UAVs for Surveillance Systems: Design and Optimization
Unmanned Aerial Vehicles (UAVs) have attracted great interest in the last few years owing to their ability to cover large areas and access difficult and hazardous target zones, which is not the case of traditional system…
- NASA NTRS 2021 ARC Presentation
Behavioral Indicators in Air Traffic Control: Detecting and Preventing Performance Decline
Air traffic controllers are responsible for the safety and efficiency of air traffic and therefore must maintain a consistently high standard of performance.
- arXiv 2021 ARXIV arXiv preprint
Bayesian Calibration for Large-Scale Fluid Structure Interaction Problems Under Embedded/Immersed Boundary Framework
Bayesian calibration is widely used for inverse analysis and uncertainty analysis for complex systems in the presence of both computer models and observation data.
- NASA NTRS 2021 ARC Conference Paper
Behavioral Indicators in Air Traffic Control: Detecting and Preventing Performance Decline
Air traffic controllers are responsible for the safety and efficiency of air traffic and therefore must maintain a consistently high standard of performance.
- arXiv 2021 ARXIV arXiv preprint
Boundary layers in turbulent vertical convection at high Prandtl number
Many environmental flows arise due to natural convection at a vertical surface, from flows in buildings to dissolving ice faces at marine-terminating glaciers.
- NASA NTRS 2021 ARC Presentation
Sleep Obtained by Cabin Crewmembers during a Long-haul Flight
Sleep loss and circadian disruption pose a significant risk in safety-sensitive occupations. In aviation, many studies have demonstrated how inflight rest locations influence alertness and performance among pilots, but f…
- arXiv 2021 ARXIV arXiv preprint
A Symbolic Regression Method for Dynamic Modeling and Control of Quadrotor UAVs
This paper presents a mathematic dynamic model of a quadrotor unmanned aerial vehicle (QUAV) by using the symbolic regression approach and then proposes a hierarchical control scheme for trajectory tracking.
- Embry-Riddle Scholarly Commons 2021 ERAU Industry report (AQRR)
Airline Quality Rating 2021
The Airline Quality Rating (AQR) was developed and first announced in early 1991 as an objective method for assessing airline quality on combined multiple performance criteria.
- Semantic Scholar 2021 Article (Reliability Engineering & System Safety)
Bayesian network modeling of accident investigation reports for aviation safety assessment
Abstract Safety assurance is of paramount importance in the air transportation system. In this paper, we analyze the historical passenger airline accidents that happened from 1982 to 2006 as reported in the National Tran…
- arXiv 2021 ARXIV arXiv preprint
SeReMAS: Self-Resilient Mobile Autonomous Systems Through Predictive Edge Computing
Edge computing enables Mobile Autonomous Systems (MASs) to execute continuous streams of heavy-duty mission-critical processing tasks, such as real-time obstacle detection and navigation.
- NASA NTRS 2021 GRC Presentation
Scroll Pump Dust Tolerance Test for Martian Atmospheric Acquisition
The ability to generate oxygen on the Martian surface will be essential to establishing a human presence on Mars. Flow generating devices such as pumps, compressors, and blowers will be crucial components in Martian atmo…
- arXiv 2021 ARXIV arXiv preprint
Characterizing the UAV-to-Machine UWB Radio Channel in Smart Factories
In this work, the results of Ultra-Wideband air-to-ground measurements carried out in a real-world factory environment are presented and discussed.
- arXiv 2021 ARXIV arXiv preprint
Vision-Based Guidance for Tracking Dynamic Objects
In this paper, we present a novel vision-based framework for tracking dynamic objects using guidance laws based on a rendezvous cone approach.
- NASA NTRS 2021 LaRC Conference Paper
Use of Design of Experiments in Determining Neural Network Architectures for Loss of Control Detection
We describe empirical methods for selecting a neural network architecture to implement belief state inference on generic commercial transport aircraft.
- arXiv 2021 ARXIV arXiv preprint
Inertial Collaborative Localisation for Autonomous Vehicles using a Minimum Energy Filter
Collaborative Localisation has been studied extensively in recent years as a way to improve pose estimation of unmanned aerial vehicles in challenging environments.
- arXiv 2021 ARXIV arXiv preprint
Geometric Control of two Quadrotors Carrying a Rigid Rod with Elastic Cables
This paper presents the design of a geometric trajectory tracking controller for the cooperative task of two quadrotor UAVs (unmanned aerial vehicles) carrying and transporting a rigid bar, which is attached to the quadr…
- arXiv 2021 ARXIV arXiv preprint
Safety-enhanced UAV Path Planning with Spherical Vector-based Particle Swarm Optimization
This paper presents a new algorithm named spherical vector-based particle swarm optimization (SPSO) to deal with the problem of path planning for unmanned aerial vehicles (UAVs) in complicated environments subjected to m…
- Semantic Scholar 2021 Article (Journal of Supercomputing)
Traffic collision avoidance system: false injection viability
Safety is a simple concept but an abstract task, specifically with aircraft. One critical safety system, the Traffic Collision Avoidance System II (TCAS), protects against mid-air collisions by predicting the course of o…
- arXiv 2021 ARXIV arXiv preprint
Autonomous Drone Delivery to Your Door and Yard
In this work, we present a system that enables delivery drones to autonomously navigate and deliver packages at various locations around a house according to the desire of the recipient and without the need for any exter…