Scipediacontent: Scipediacontent moved page Draft Content 366507035 to Stell 2011a

2021-01-28T16:25:07Z

Scipediacontent moved page Draft Content 366507035 to Stell 2011a

Scipediacontent: Created page with " == Abstract == To enable arriving aircraft to fly optimized descents computed by the flight management system (FMS) in congested airspace, ground automation must accurately..."

2021-01-28T16:25:04Z

Created page with " == Abstract == To enable arriving aircraft to fly optimized descents computed by the flight management system (FMS) in congested airspace, ground automation must accurately..."

New page

== Abstract ==

To enable arriving aircraft to fly optimized descents computed by the flight management system (FMS) in congested airspace, ground automation must accurately predict descent trajectories. To support development of the trajectory predictor and its error models, commercial flights executed idle-thrust descents, and the recorded data includes the target speed profile and FMS intent trajectories. The FMS computes the intended descent path assuming idle thrust after top of descent (TOD), and any intervention by the controllers that alters the FMS execution of the descent is recorded so that such flights are discarded from the analysis. The horizontal flight path, cruise and meter fix altitudes, and actual TOD location are extracted from the radar data. Using more than 60 descents in Boeing 777 aircraft, the actual speeds are compared to the intended descent speed profile. In addition, three aspects of the accuracy of the FMS intent trajectory are analyzed: the meter fix crossing time, the TOD location, and the altitude at the meter fix. The actual TOD location is within 5 nmi of the intent location for over 95% of the descents. Roughly 90% of the time, the airspeed is within 0.01 of the target Mach number and within 10 KCAS of the target descent CAS, but the meter fix crossing time is only within 50 sec of the time computed by the FMS. Overall, the aircraft seem to be executing the descents as intended by the designers of the onboard automation.

== Original document ==

The different versions of the original document can be found in:

* [http://www.aviationsystemsdivision.arc.nasa.gov/publications/2011/DASC2011_Stell.pdf http://www.aviationsystemsdivision.arc.nasa.gov/publications/2011/DASC2011_Stell.pdf]

* [http://xplorestaging.ieee.org/ielx5/6088077/6095898/06095979.pdf?arnumber=6095979 http://xplorestaging.ieee.org/ielx5/6088077/6095898/06095979.pdf?arnumber=6095979],
: [http://dx.doi.org/10.1109/dasc.2011.6095979 http://dx.doi.org/10.1109/dasc.2011.6095979]

* [http://xplorestaging.ieee.org/ielx5/6088077/6095898/06096176.pdf?arnumber=6096176 http://xplorestaging.ieee.org/ielx5/6088077/6095898/06096176.pdf?arnumber=6096176],
: [http://dx.doi.org/10.1109/dasc.2011.6096176 http://dx.doi.org/10.1109/dasc.2011.6096176]

* [https://www.aviationsystemsdivision.arc.nasa.gov/publications/2011/DASC2011_Stell.pdf https://www.aviationsystemsdivision.arc.nasa.gov/publications/2011/DASC2011_Stell.pdf],
: [https://www.aviationsystems.arc.nasa.gov/publications/2011/DASC2011_Stell.pdf https://www.aviationsystems.arc.nasa.gov/publications/2011/DASC2011_Stell.pdf],
: [https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20120001672.pdf https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20120001672.pdf],
: [https://ntrs.nasa.gov/search.jsp?R=20120001672 https://ntrs.nasa.gov/search.jsp?R=20120001672],
: [http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.ieee-000006095979 http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.ieee-000006095979],
: [https://repository.exst.jaxa.jp/dspace/handle/a-is/244154 https://repository.exst.jaxa.jp/dspace/handle/a-is/244154],
: [https://ieeexplore.ieee.org/document/6095979 https://ieeexplore.ieee.org/document/6095979],
: [http://www.aviationsystemsdivision.arc.nasa.gov/publications/2011/DASC2011_Stell.pdf http://www.aviationsystemsdivision.arc.nasa.gov/publications/2011/DASC2011_Stell.pdf],
: [https://academic.microsoft.com/#/detail/2019804123 https://academic.microsoft.com/#/detail/2019804123]

DOIS: 10.1109/dasc.2011.6095979 10.1109/dasc.2011.6096176

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Stell 2011a - Revision history

Scipediacontent: Scipediacontent moved page Draft Content 366507035 to Stell 2011a

Scipediacontent: Created page with " == Abstract == To enable arriving aircraft to fly optimized descents computed by the flight management system (FMS) in congested airspace, ground automation must accurately..."