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Flyover Noise Measurements of a Spiraling Noise Abatement Approach Procedure

Bertsch, Lothar und Looye, Gertjan und Anton, Eckhard und Schwanke, Stefan (2011) Flyover Noise Measurements of a Spiraling Noise Abatement Approach Procedure. Journal of Aircraft, 48 (2), Seiten 436-448. DOI: 10.2514/1.C001005

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Alternative approach procedures are currently under investigation to evaluate their ground noise reduction potential. One such procedure involves approaching the airport at a considerably higher altitude compared with standard landing trajectories, followed by a spiraling descent (helix flight path) shortly before the runway threshold. In this way, high ground noise levels by approaching aircraft are dislocated away from the common approach path and concentrated in the area near the helix path, that is, in direct vicinity of the airport. Ground noise levels along the entire flight path before the helix are significantly reduced. The effectiveness of this procedure, referred to as “helical noise abatement procedure,” has been quantified by means of computational simulation analyses. These analyses also focused on aspects such as increased fuel burn and the occurrence of multiple noise events below the helix. In June 2009, a new autopilot by the DLR, German Aerospace Center, especially capable of tracking curved flight-path trajectories, was flight tested. Three helical noise abatement procedures were included in the flight plan, as well as standard and steep landing approaches. In addition, dedicated flyover noise measurements were organized. Twelve ground microphones were placed along the common approach path and the helical flight segment. The measured data confirm the predicted noise dislocation effects. High noise levels were found to be limited to observer locations around the helix. Results from computational noise prediction have been compared with the experimental data. Predicted trends and noise dislocation effects are in good agreement with the measurements, whereas the absolute numerical values show discrepancies. The flight test was closely accompanied by a research and development member of the German air navigation service provider DFS Deutsche Flugsicherung GmbH to study the impact of spiraling procedures on air traffic management integration aspects and air traffic controller workload, for example, increased interaction with the pilots. Obviously, a spiraling approach procedure would not be implemented into the existing air traffic scenario with its common approach paths and more frequented airports. The operational and economic environment still need more detailed investigation. Helical approaches become more feasible for implementation at small, less-frequented regional airports or during night hours to avoid possible noise related curfews.

Titel:Flyover Noise Measurements of a Spiraling Noise Abatement Approach Procedure
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID
Bertsch, Lotharlothar.bertsch@dlr.deNICHT SPEZIFIZIERT
Looye, Gertjangertjan.looye@dlr.deNICHT SPEZIFIZIERT
Anton, Eckhardanton@ilr.rwth-aachen.deNICHT SPEZIFIZIERT
Schwanke, Stefanstefan.schwanke@dfs.deNICHT SPEZIFIZIERT
Datum:März 2011
Erschienen in:Journal of Aircraft
Referierte Publikation:Ja
In Open Access:Nein
In ISI Web of Science:Ja
DOI :10.2514/1.C001005
Seitenbereich:Seiten 436-448
Name der Reihe:AIAA Journal of Aircraft
Stichwörter:Helical Noise Abatement Procedure (HeNAP), Flight test, Aircraft noise, Noise Measurements, Aircraft Noise Prediction, Parametric Aircraft Noise Analysis Module (PANAM), Noise Abatement Procedure, Flight procedure
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Systeme & Kabine (alt)
Standort: Braunschweig , Oberpfaffenhofen
Institute & Einrichtungen:Institut für Robotik und Mechatronik (bis 2012) > Systemdynamik und Regelungstechnik (war Entwurfsorientierte Regelungstechnik)
Institut für Aerodynamik und Strömungstechnik > Konfigurativer Entwurf
Hinterlegt von: Bertsch, Dr.-Ing. Lothar
Hinterlegt am:31 Mär 2011 11:53
Letzte Änderung:26 Mär 2013 13:27

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