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  • 1
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    On-Time Performance ASPM Non-Parametric Statistical Analysis (2018)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The purpose of this analysis is to provide a data-driven examination of two selected flight metrics, i.e., (1) total taxi-out time and (2) actual off time minus scheduled off block time. More specifically, Aviation System Performance Metrics (ASPM) data were analyzed to determine any possible differences in CLT (Charlotte Douglas International Airport) departure flights on these two metrics when comparing pre-IADS (Integrated Arrival, Departure, and Surface Operations) against post-IADS metering operations. This was originally presented to the ATD-2 (Airspace Technology Demonstration-2) Analytics team in August 2018.
    Keywords: Air Transportation and Safety
    Type: ARC-E-DAA-TN61129 , Airspace Technology Demonstration 2 (ATD-2) Tech Transfer; Sep 14, 2018; Moffett Field, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Benefit Opportunities for Integrated Surface and Airspace Departure Scheduling: A Study of Operations at Charlotte-Douglas International Airport (2016)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: NASA is collaborating with the FAA and aviation industry to develop and demonstrate new capabilities that integrate arrival, departure, and surface air-traffic operations. The concept relies on trajectory-based departure scheduling and collaborative decision making to reduce delays and uncertainties in taxi and climb operations. The paper describes the concept and benefit mechanisms aimed at improving flight efficiency and predictability while maintaining or improving operational throughput. The potential impact of the technology is studied and discussed through a quantitative analysis of relevant shortfalls at the site identified for initial deployment and demonstration in 2017: Charlotte-Douglas International Airport. Results from trajectory analysis indicate substantial opportunity to reduce taxi delays for both departures and arrivals by metering departures at the gate in a manner that maximizes throughput while adhering to takeoff restrictions due mostly to airspace constraints. Substantial taxi-out delay reduction is shown for flights subject to departure restrictions stemming from traffic flow management initiatives. Opportunities to improve the predictability of taxi, takeoff, and climb operations are examined and their potential impact on airline scheduling decisions and air-traffic forecasting is discussed. In addition, the potential to improve throughput with departure scheduling that maximizes use of available runway and airspace capacity is analyzed.
    Keywords: Air Transportation and Safety
    Type: ARC-E-DAA-TN30199 , Digital Avionics Systems Conference (DASC); Sep 25, 2016 - Sep 29, 2016; Sacramento, CA; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Ice Accretion Measurements on an Airfoil and Wedge in Mixed-Phase Conditions (2015)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This paper describes ice accretion measurements from experiments conducted at the National Research Council (NRC) of Canada's Research Altitude Test Facility during 2012. Due to numerous engine power loss events associated with high altitude convective weather, potential ice accretion within an engine due to ice crystal ingestion is being investigated collaboratively by NASA and NRC. These investigations examine the physical mechanisms of ice accretion on surfaces exposed to ice crystal and mixed phase conditions, similar to those believed to exist in core compressor regions of jet engines. A further objective of these tests is to examine scaling effects since altitude appears to play a key role in this icing process.
    Keywords: Air Transportation and Safety
    Type: GRC-E-DAA-TN23445 , 2015 SAE International Conference on Icing of Aircraft, Engines, and Structures; Jun 22, 2015 - Jun 25, 2015; Prague; Czechoslovakia
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Evolution of a Simulation Testbed into an Operational Tool (2017)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: This paper describes the evolution over a 20-year period of the Future ATM (Air Traffic Management) Concepts Evaluation Tool (FACET) from a National Airspace System (NAS) based simulation testbed into an operational tool. FACET was developed as a testbed for assessing futuristic ATM concepts, e.g., automated conflict detection and resolution. NAS Constraint Evaluation and Notification Tool (NASCENT) is an application, within FACET, for alerting airspace users of inefficiencies in flight operations and advising time- and fuel-saving reroutes.It is currently in use at American Airlines Integrated Operations Center in Fort Worth, TX. The concepts assessed,research conducted, and the operational capability developed, along with the NASA support and achievements are presented in this paper.
    Keywords: Air Transportation and Safety
    Type: ARC-E-DAA-TN46414 , Modelling and Simulation in Air Traffic Management; Nov 14, 2017 - Nov 15, 2017; London; United Kingdom
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
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