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
- NASA NTRS 2019 LaRC Conference Paper
Object-Oriented Bayesian Networks (OOBN) for Aviation Accident Modeling and Technology Portfolio Impact Assessment
The concern for reducing aviation safety risk is rising as the National Airspace System in the United States transforms to the Next Generation Air Transportation System (NextGen).
- NASA NTRS 2019 CDMS Conference Proceedings
Crash simulation of composite and aluminum helicopter fuselages using a finite-element program
This paper describes a mathematical investigation of the crash-impact responses of an all-composite helicopter cockpit section incorporating an energy absorbing concept and one of conventional aluminum construction, usin…
- NASA NTRS 2019 ARC Presentation
Identification of Human Factors in Unmanned Aviation Via Pilot Incident Reports
There is a need for incident data relevant to the operation of civilian unmanned aircraft systems (UAS) in the National Air Space (NAS).
- NASA NTRS 2019 ARC Technical Publication (TP)
What Happened, and Why: Toward an Understanding of Human Error Based on Automated Analyses of Incident Reports
The objective of the Aviation System Monitoring and Modeling (ASMM) project of NASA s Aviation Safety and Security Program was to develop technologies that will enable proactive management of safety risk, which entails i…
- NASA NTRS 2019 GRC Conference Paper
Collaborative Experiments and Computations in Aircraft Icing
The formation of ice over lifting surfaces can affect aerodynamic performance. The ability to predict ice accumulation and the resulting degradation in vehicle performance is essential to determine the limitations of air…
- NASA NTRS 2019 GRC Presentation
Preliminary Findings of Inflight Icing Field Test to Support Icing Remote Sensing Technology Assessment
NASA and the National Center for Atmospheric Research have developed an icing remote sensing technology that has demonstrated skill at detecting and classifying icing hazards in a vertical column above an instrumented gr…
- NASA NTRS 2019 CDMS Conference Paper
Close-up analysis of inflight ice accretion
The objective of this effort was to validate in flight, data that has been gathered in the NASA Lewis Research Center's Icing Research Tunnel (IRT) over the past several years.
- NASA NTRS 2019 CDMS Reprint (Version printed in journal)
NASA/FAA Tailplane Icing Program Overview
The effects of tailplane icing were investigated in a four-year NASA/FAA Tailplane Icing, Program (TIP). This research program was developed to improve the understanding, of iced tailplane aeroperformance and aircraft ae…
- NASA NTRS 2019 CDMS Reprint (Version printed in journal)
In-Flight Aerodynamic Measurements of an Iced Horizontal Tailplane
The effects of tailplane icing on aircraft dynamics and tailplane aerodynamics were investigated using, NASA's modified DHC-6 Twin Otter icing research aircraft.
- NASA NTRS 2019 CDMS Reprint (Version printed in journal)
Investigation of Dynamic Flight Maneuvers With an Iced Tailplane
A detailed analysis of two of the dynamic maneuvers, the pushover and elevator doublet, from the NASA/FAA Tailplane Icing Program are discussed.
- NASA NTRS 2019 CDMS Conference Paper
Aircraft icing problems - After 50 years
With the possible exception of tailplane-ice hazards, understanding of aircraft icing processes and their performance penalties and hazards has not changed fundamentally in 40-50 years.
- NASA NTRS 2019 GRC Preprint (Draft being sent to journal)
Flying Qualities Evaluation of a Commuter Aircraft With an Ice Contaminated Tailplane
During the NASA/FAA (Federal Aviation Administration) Tailplane Icing Program, pilot evaluations of aircraft flying qualities were conducted with various ice shapes attached to the horizontal tailplane of the NASA Twin O…
- NASA NTRS 2019 CDMS Conference Paper
Icing tests of a model main rotor
A NASA-sponsored consortium conducted an experimental program to investigate the characteristics of a model rotor under icing conditions. This project resulted in the first U.S.
- NASA NTRS 2019 GRC Technical Memorandum (TM)
Analysis of a Hovering Rotor in Icing Conditions
A high fidelity analysis method is proposed to evaluate the ice accumulation and the ensuing rotor performance degradation for a helicopter flying through an icing cloud.
- NASA NTRS 2019 CDMS Conference Paper
Icing research tunnel test of a model helicopter rotor
An experimental program has been conducted in the NASA Lewis Research Center Icing Research Tunnel (IRT) in which an OH-58 tail rotor assembly was operated in a horizontal plane to simulate the action of a typical main r…
- NASA NTRS 2019 CDMS Conference Paper
Icing Research Tunnel test of a model helicopter rotor
An experimental program has been conducted in the NASA Lewis Research Center Icing Research Tunnel (IRT) in which an OH-58 tail rotor assembly was operated in a horizontal plane to simulate the action of a typical main r…
- NASA NTRS 2019 CDMS Conference Paper
Results of a sub-scale model rotor icing test
A heavily instrumented sub-scale model of a helicopter main rotor was tested in the NASA Lewis Research Center Icing Research Tunnel (IRT) in September and November 1989.
- NASA NTRS 2019 CDMS Conference Paper
An overview of a model rotor icing test in the NASA Lewis Icing Research Tunnel
During two entries in late 1989, a heavily instrumented sub-scale model of a helicopter main rotor was tested in the NASA LeRC Icing Research Tunnel (IRT).
- NASA NTRS 2019 LaRC Preprint (Draft being sent to journal)
Post-Stall Aerodynamic Modeling and Gain-Scheduled Control Design
A multidisciplinary research e.ort that combines aerodynamic modeling and gain-scheduled control design for aircraft flight at post-stall conditions is described.
- NASA NTRS 2019 LaRC Conference Paper
Global Aerodynamic Modeling for Stall/Upset Recovery Training Using Efficient Piloted Flight Test Techniques
Flight test and modeling techniques were developed for efficiently identifying global aerodynamic models that can be used to accurately simulate stall, upset, and recovery on large transport airplanes.
- NASA NTRS 2019 CDMS Conference Paper
Stall flutter analysis.
An analysis of unsteady airfoil stall and stall flutter is presented that is based on a series of approximations. Unsteady aerodynamic characteristics are related theoretically to static aerodynamic characteristics.
- NASA NTRS 2019 CDMS Conference Paper
Incipient torsional stall flutter aerodynamic experiments on a swept three-dimensional wing
The aerodynamics of small amplitude pitching motions near stall have been studied experimentally in order to improve understanding of the torsional stall flutter problem for propeller blades.
- NASA NTRS 2019 CDMS Conference Paper
Analytic prediction of dynamic stall characteristics.
A new approach is presented for solving the problem of predicting dynamic stall characteristics. In this approach, the unsteady aerodynamic characteristics are related theoretically to static aerodynamic characteristics …
- NASA NTRS 2019 LaRC Conference Paper
An Iterative Decambering Approach for Post-Stall Prediction of Wing Characteristics using known Section Data
An iterative decambering approach for the post stall prediction of wings using known section data as inputs is presented. The method can currently be used for incompressible .ow and can be extended to compressible subson…
- NASA NTRS 2019 LaRC Conference Paper
Runway Incursion Prevention for General Aviation Operations
A Runway Incursion Prevention System (RIPS) and additional incursion detection algorithm were adapted for general aviation operations and evaluated in a simulation study at the National Aeronautics and Space Administrati…
- NASA NTRS 2019 LaRC Conference Paper
Runway Incursion Prevention System for General Aviation Operations
A Runway Incursion Prevention System (RIPS) and additional incursion detection algorithm were adapted for general aviation operations and evaluated in a simulation study at the National Aeronautics and Space Administrati…
- NASA NTRS 2019 LaRC Preprint (Draft being sent to journal)
Runway Incursion Prevention System Simulation Evaluation
A Runway Incursion Prevention System (RIPS) was evaluated in a full mission simulation study at the NASA Langley Research center in March 2002.
- NASA NTRS 2019 LaRC Preprint (Draft being sent to journal)
Runway Incursion Prevention System Testing at the Wallops Flight Facility
A Runway Incursion Prevention System (RIPS) integrated with a Synthetic Vision System concept (SVS) was tested at the Reno/Tahoe International Airport (RNO) and Wallops Flight Facility (WAL) in the summer of 2004.
- NASA NTRS 2019 LaRC Conference Paper
Runway Incursion Prevention: A Technology Solution
A runway incursion occurs any time an airplane, vehicle, person or object on the ground creates a collision hazard with an airplane that is taking off or landing at an airport under the supervision of Air Traffic Control…
- NASA NTRS 2019 LaRC Conference Paper
Development of a Bayesian Belief Network Runway Incursion and Excursion Model
In a previous work, a statistical analysis of runway incursion (RI) event data was conducted to ascertain the relevance of this data to the top ten Technical Challenges (TC) of the National Aeronautics and Space Administ…
- NASA NTRS 2019 LaRC Conference Paper
Modeling Increased Complexity and the Reliance on Automation: FLightdeck Automation Problems (FLAP) Model
This paper highlights the development of a model that is focused on the safety issue of increasing complexity and reliance on automation systems in transport category aircraft.
- NASA NTRS 2019 LaRC Conference Paper
Uncertainty Analysis for the Evaluation of a Passive Runway Arresting System
This paper considers the stopping distance of an aircraft involved in a runway overrun incident when the runway has been provided with an extension comprised of a material engineered to induce high levels of rolling fric…
- NASA NTRS 2019 LaRC Conference Paper
Wake Turbulence Mitigation for Arrivals (WTMA)
The preliminary Wake Turbulence Mitigation for Arrivals (WTMA) concept of operations is described in this paper. The WTMA concept provides further detail to work initiated by the Wake Vortex Avoidance System Concept Eval…
- NASA NTRS 2019 CDMS Conference Paper
Aircraft wake turbulence avoidance
Aircraft wake turbulence /trailing vortex systems/ avoidance during flight, describing procedures for pilots and tower operators
- NASA NTRS 2019 CDMS Conference Paper
Aircraft wake turbulence progress and plans
Aircraft wake turbulence and trailing vortices, investigating physical characteristics, hazard potential and avoidance techniques
- NASA NTRS 2019 CDMS Conference Paper
Turbulence characteristics in the near wake of a compressor rotor blade
This paper is concerned with the turbulence properties in the near wake of a rotating compressor blade. The variation of the axial, tangential and radial intensities as well as stresses across the wake and its decay char…
- NASA NTRS 2019 CDMS Conference Proceedings
Discrete rotor noise.
Description of a single unified theory to account generally for the discrete radiation from the whole family of heavily loaded axial flow rotors, including helicopter rotors, propellers, and compressors.
- NASA NTRS 2019 ARC Reprint (Version printed in journal)
Criteria Relating Wake Vortex Encounter Hazard to Aircraft Response
Piloted six-degree-of-freedom motion simulator investigations were conducted at the NASA Ames Research Center to determine criteria relating the hazard posed by a wake vortex encounter to the response of the encountering…
- NASA NTRS 2019 LaRC Conference Paper
Evaluation of Fast-Time Wake Vortex Models using Wake Encounter Flight Test Data
This paper describes a methodology for the integration and evaluation of fast-time wake models with flight data. The National Aeronautics and Space Administration conducted detailed flight tests in 1995 and 1997 under th…
- NASA NTRS 2019 LaRC Preprint (Draft being sent to journal)
Terrain Portrayal for Head-Down Displays Flight Test
The Synthetic Vision Systems General Aviation (SVS-GA) element of NASA's Aviation Safety Program is developing technology to eliminate low visibility induced General Aviation (GA) accidents through the application of syn…
- NASA NTRS 2019 LaRC Conference Paper
Multi-Dimensionality of Synthetic Vision Cockpit Displays: Prevention of Controlled-Flight-Into-Terrain
NASA's Synthetic Vision Systems (SVS) project is developing technologies with practical applications that will help to eliminate low visibility conditions as a causal factor to civil aircraft accidents while replicating …
- NASA NTRS 2019 LaRC Preprint (Draft being sent to journal)
Terrain Portrayal for Head-Down Displays Experiment
The General Aviation Element of the Aviation Safety Program's Synthetic Vision Systems (SVS) Project is developing technology to eliminate low visibility induced General Aviation (GA) accidents.
- NASA NTRS 2019 LaRC Conference Paper
Flight Test Results of a Synthetic Vision Elevation Database Integrity Monitor
This paper discusses the flight test results of a real-time Digital Elevation Model (DEM) integrity monitor for Civil Aviation applications.
- NASA NTRS 2019 LaRC Preprint (Draft being sent to journal)
Synthetic Vision CFIT Experiments for GA and Commercial Aircraft: "A Picture Is Worth A Thousand Lives"
Because restricted visibility has been implicated in the majority of commercial and general aviation accidents, solutions will need to focus on how to enhance safety during instrument meteorological conditions (IMC).
- NASA NTRS 2019 LaRC Other
Synthetic Vision Enhanced Surface Operations and Flight Procedures Rehearsal Tool
Limited visibility has been cited as predominant causal factor for both Controlled-Flight-Into-Terrain (CFIT) and runway incursion accidents.
- NASA NTRS 2019 LaRC Conference Paper
DTED Integrity Monitoring Using Differential GPS and Radar Altimeter
This paper discusses a real-time digital terrain elevation data (DTED) integrity monitor for Civil Aviation applications. Providing pilots with Synthetic Vision (SV) displays containing terrain information has the potent…
- NASA NTRS 2019 AFRC Conference Paper
Aircraft Loss of Control Study
Loss of control has become the leading cause of jet fatalities worldwide. Aside from their frequency of occurrence, accidents resulting from loss of aircraft control seize the public s attention by yielding large numbers…
- NASA NTRS 2019 LaRC Conference Paper
Future Integrated Systems Concept for Preventing Aircraft Loss-of-Control Accidents
Loss of control remains one of the largest contributors to aircraft fatal accidents worldwide. Aircraft loss-of-control accidents are highly complex in that they can result from numerous causal and contributing factors a…
- NASA NTRS 2019 LaRC Conference Paper
Aircraft Loss-of-Control Accident Analysis
Loss of control remains one of the largest contributors to fatal aircraft accidents worldwide. Aircraft loss-of-control accidents are complex in that they can result from numerous causal and contributing factors acting a…
- NASA NTRS 2019 LaRC Other
Aircraft Accident Prevention: Loss-of-Control Analysis
The majority of fatal aircraft accidents are associated with loss-of-control . Yet the notion of loss-of-control is not well-defined in terms suitable for rigorous control systems analysis.