Rossignol, Karl-Stéphane und Pott-Pollenske, Michael und Delfs, Jan Werner und Silberman, Jakob und Gomes, Jorge (2017) Investigating Noise Shielding by Unconventional Aircraft Configurations. 23rd AIAA/CEAS Aeroacoustics Conference, Denver. doi: 10.2514/6.2017-3195.
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Kurzfassung
First experimental results on investigations of the shielding characteristics of three unconventional aircraft configurations are presented. DLR's Low Noise Aircraft, a scaled-down version of NASA's Hybrid Wing Body configuration and DLR's F17E Unmanned Combat Air Vehicle configuration are all investigated in the acoustic plenum of the DNW-NWB wind tunnel at DLR in Braunschweig. Using a laser-based non- intrusive impulsive point source, various effective engine placements were investigated for selected model settings. Shielding factors are calculated from in-flow measurements made over a large spatial extent in the fly-over plane. For the present application of the laser-based point source, a custom optical setup was developed to achieve a focal length large enough for its use in the DNW-NWB. In this report emphasis is, therefore, put on a presentation of the optical design and on the characterization of the resulting sound surce. The shielding results presented herein provide a first look into the acquired database. Future work will be focussed on a finer analysis of the acquired database as well as on the realization of companion numerical simulations aimed at the validation of in-house simulation tools. The work presented herein will also serve as a basis for the elaboration of guidelines for the design of low-noise UCAV configurations.
elib-URL des Eintrags: | https://elib.dlr.de/117125/ | ||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||
Titel: | Investigating Noise Shielding by Unconventional Aircraft Configurations | ||||||||||||||||||||||||
Autoren: |
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Datum: | 2017 | ||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||
DOI: | 10.2514/6.2017-3195 | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | Aeroacoustics,Hybrid Wing Body, Shielding, Noise,Experiment, Wind tunnel | ||||||||||||||||||||||||
Veranstaltungstitel: | 23rd AIAA/CEAS Aeroacoustics Conference | ||||||||||||||||||||||||
Veranstaltungsort: | Denver | ||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||
HGF - Programm: | Luftfahrt | ||||||||||||||||||||||||
HGF - Programmthema: | Flugzeuge | ||||||||||||||||||||||||
DLR - Schwerpunkt: | Luftfahrt | ||||||||||||||||||||||||
DLR - Forschungsgebiet: | L AR - Aircraft Research | ||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | L - Flugphysik (alt) | ||||||||||||||||||||||||
Standort: | Braunschweig | ||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Aerodynamik und Strömungstechnik > Technische Akustik Deutsch-Niederländische Windkanäle | ||||||||||||||||||||||||
Hinterlegt von: | Rossignol, Karl-Stephane | ||||||||||||||||||||||||
Hinterlegt am: | 19 Dez 2017 08:54 | ||||||||||||||||||||||||
Letzte Änderung: | 19 Dez 2017 08:54 |
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