elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

OPTIMAL Deliverable D7.4.1-2: Bremen airport ATTAS CDA flight test report

Lenz, Helge und Edinger, Christiane und Korn, Bernd (2008) OPTIMAL Deliverable D7.4.1-2: Bremen airport ATTAS CDA flight test report. Projektbericht.

Dieses Archiv kann nicht den gesamten Text zur Verfügung stellen.

Kurzfassung

The document describes the results of the ACDA flight trials that have been carried out with DLR’s research aircraft ATTAS in Bremen. An ACDA procedure has been developed in WP2.4 for Bremen airport taking into account the idea of a late-merging point concept. This concept offers the possibility of allowing each aircraft to fly its own optimized vertical profile. Together with an RTA issues for the late merging point, this kind of concept would offer the use of such advanced procedures even in high density operations. A basic requirement for this kind of operation is the aircraft’s capability to meet the RTA. The functions developed within OPTIMAL for DLR´s Advanced Flight Management System (AFMS) allow flying an idle 4D ACDA in clean configuration until G/S intercept with an RTA given at for the late merging point or at the threshold. These functions have been tested in flight trials at Bremen airport. The focus has been on the 4D performance. In addition, SBAS guidance performance has been assessed. 23 approaches to Bremen under various weather (wind) conditions have been carried out. During some approaches, we even experienced a big difference between the wind forecast and the actual wind conditions during flight trials. These deviations have been alleviated by respective re-planning of the ACDA trajectory by the AFMS. This includes new point in time for the deployment of flaps 1. In total at G/S intercept, an average accuracy of -2.2 seconds with a Sigma of 4.5 seconds has been achieved. At 500ft height above threshold, the average value was -4.5 seconds with a Sigma of 7.9 seconds. Taking only into account the 16 approaches with a good match between wind forecast and actual wind the 4D accuracy was about ±3 seconds. Basically the trials have shown that • ACDAs can be flown by the FMS to meet RTA on G/S intercept or even on RWY threshold which is one main enabler for implementing ACDAs using Late Merging Point Concept • Inaccurate (weather) wind forecast will either effect RTA accuracy or reduce noise benefits of ACDAs (e.g. if earlier flaps settings are required)

Dokumentart:Berichtsreihe (Projektbericht)
Titel:OPTIMAL Deliverable D7.4.1-2: Bremen airport ATTAS CDA flight test report
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Lenz, HelgeNICHT SPEZIFIZIERT
Edinger, ChristianeNICHT SPEZIFIZIERT
Korn, BerndNICHT SPEZIFIZIERT
Datum:September 2008
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:OPTIMAL, ACDA, CDA, FMS, RTA, EU FP6, flight trials, ATTAS
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:L SF - Sichere und effiziente Luftverkehrsführung (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L SF - Sichere und effiziente Luftverkehrsführung
DLR - Teilgebiet (Projekt, Vorhaben):L - Faktor Mensch und Sicherheit in der Luftfahrt
Standort: Braunschweig
Institute & Einrichtungen:Institut für Flugführung > Pilotenassistenz
Hinterlegt von: Dr.-Ing. Bernd Korn
Hinterlegt am:05 Dez 2008
Letzte Änderung:27 Apr 2009 15:34

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.