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Design and testing of low noise landing gears

Design and testing of low noise landing gears
Design and testing of low noise landing gears
In the approach phase of large commercial aircraft, airframe noise - and in particular that from landing gears - is one of the dominant aircraft noise components. Within a European co-financed research project entitled "Significantly Lower Community Exposure to Aircraft Noise" (codenamed SILENCER) a study in "advanced low noise landing gear design" was performed to develop operational landing gears which take into account aeroacoustic constraints early in the design stage. Airbus aircraft typical configurations of low wing with underslung engines and A340 type gears were selected as reference. RANS flow field calculations were performed and used to identify and thus avoid the impingement of high speed flow onto critical gear structure elements. The evaluation of CFD results with respect to the effects on aerodynamic noise was performed on the basis of related experimental experience and a semi-empirical landing gear noise model. Both low noise advanced nose and main landing gears were designed and manufactured at full scale for noise testing in the 8 m by 6 m open test section of the German-Dutch Wind Tunnel (DNW-LLF). Relative to the conventional reference gears a reduction of broadband landing gear noise in the order of 5 to 6 dB (i.e. on source level) was achieved.
1475-472X
233-262
Dobrzynski, Werner M.
101d7a58-956b-4905-9490-90e605dba459
Schöning, Britta
41253e96-b980-48ac-9c07-3dbc0bbcde97
Chow, Leung Choi
1b11d5cd-ba9f-4959-a646-b937e430ce62
Wood, Chris
3004b47a-88ce-469f-b801-5ea213e818ed
Smith, Malcolm
1bc8608d-0178-4793-8f73-46a6c6b9b279
Seror, Christelle
493b1848-c3b2-4cca-bf3c-a2ebd11fb3be
Dobrzynski, Werner M.
101d7a58-956b-4905-9490-90e605dba459
Schöning, Britta
41253e96-b980-48ac-9c07-3dbc0bbcde97
Chow, Leung Choi
1b11d5cd-ba9f-4959-a646-b937e430ce62
Wood, Chris
3004b47a-88ce-469f-b801-5ea213e818ed
Smith, Malcolm
1bc8608d-0178-4793-8f73-46a6c6b9b279
Seror, Christelle
493b1848-c3b2-4cca-bf3c-a2ebd11fb3be

Dobrzynski, Werner M., Schöning, Britta, Chow, Leung Choi, Wood, Chris, Smith, Malcolm and Seror, Christelle (2006) Design and testing of low noise landing gears. International Journal of Aeroacoustics, 5 (3), 233-262.

Record type: Article

Abstract

In the approach phase of large commercial aircraft, airframe noise - and in particular that from landing gears - is one of the dominant aircraft noise components. Within a European co-financed research project entitled "Significantly Lower Community Exposure to Aircraft Noise" (codenamed SILENCER) a study in "advanced low noise landing gear design" was performed to develop operational landing gears which take into account aeroacoustic constraints early in the design stage. Airbus aircraft typical configurations of low wing with underslung engines and A340 type gears were selected as reference. RANS flow field calculations were performed and used to identify and thus avoid the impingement of high speed flow onto critical gear structure elements. The evaluation of CFD results with respect to the effects on aerodynamic noise was performed on the basis of related experimental experience and a semi-empirical landing gear noise model. Both low noise advanced nose and main landing gears were designed and manufactured at full scale for noise testing in the 8 m by 6 m open test section of the German-Dutch Wind Tunnel (DNW-LLF). Relative to the conventional reference gears a reduction of broadband landing gear noise in the order of 5 to 6 dB (i.e. on source level) was achieved.

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Published date: 2006

Identifiers

Local EPrints ID: 45164
URI: http://eprints.soton.ac.uk/id/eprint/45164
ISSN: 1475-472X
PURE UUID: 22d99fb7-8a8c-456d-aae6-1181dc580ac0

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Date deposited: 20 Mar 2007
Last modified: 15 Mar 2024 09:09

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Contributors

Author: Werner M. Dobrzynski
Author: Britta Schöning
Author: Leung Choi Chow
Author: Chris Wood
Author: Malcolm Smith
Author: Christelle Seror

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