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A piloted simulator evaluation of a ground-based 4-D descent advisor algorithmA ground-based, four dimensional (4D) descent-advisor algorithm is under development at NASA-Ames. The algorithm combines detailed aerodynamic, propulsive, and atmospheric models with an efficient numerical integration scheme to generate 4D descent advisories. The ability is investigated of the 4D descent advisor algorithm to provide adequate control of arrival time for aircraft not equipped with on-board 4D guidance systems. A piloted simulation was conducted to determine the precision with which the descent advisor could predict the 4D trajectories of typical straight-in descents flown by airline pilots under different wind conditions. The effects of errors in the estimation of wind and initial aircraft weight were also studied. A description of the descent advisor as well as the result of the simulation studies are presented.
Document ID
19910001687
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Davis, Thomas J.
(NASA Ames Research Center Moffett Field, CA, United States)
Green, Steven M.
(NASA Ames Research Center Moffett Field, CA, United States)
Erzberger, Heinz
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1990
Publication Information
Publication: AGARD, Aircraft Trajectories: Computation, Prediction, Control, Volume 2: Air Traffic Handling and Ground-Based Guidance of Aircraft. Part 4: Air Traffic Handling. Part 5: Guidance of Aircraft in a Time-Based Constrained Environment. Surveillance. Part 7: Meteorological Forecasts. Part 8: Aircraft Operation in Air Traffic Handling Simulation
Subject Category
Aircraft Communications And Navigation
Accession Number
91N11000
Distribution Limits
Public
Copyright
Other
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