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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 dominating 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 dedicated 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 were 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 (DNWLLF). 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.
Dobrzynski, Werner M.
101d7a58-956b-4905-9490-90e605dba459
Schoning, Britta
7559b468-86d7-4ae7-9fab-f59beff425bd
Choi Chow, Leung
49199cec-5440-41b5-9843-55efdc3bf391
Wood, Chris
3004b47a-88ce-469f-b801-5ea213e818ed
Smith, Malcolm
1bc8608d-0178-4793-8f73-46a6c6b9b279
Seror, Chistelle
56ebd447-35be-4203-bbd4-c0d25091c3a0
Dobrzynski, Werner M.
101d7a58-956b-4905-9490-90e605dba459
Schoning, Britta
7559b468-86d7-4ae7-9fab-f59beff425bd
Choi Chow, Leung
49199cec-5440-41b5-9843-55efdc3bf391
Wood, Chris
3004b47a-88ce-469f-b801-5ea213e818ed
Smith, Malcolm
1bc8608d-0178-4793-8f73-46a6c6b9b279
Seror, Chistelle
56ebd447-35be-4203-bbd4-c0d25091c3a0

Dobrzynski, Werner M., Schoning, Britta, Choi Chow, Leung, Wood, Chris, Smith, Malcolm and Seror, Chistelle (2005) Design and testing of low noise landing gears. 26th AIAA Aeroacoustics Conference, United States. 23 - 25 May 2005.

Record type: Conference or Workshop Item (Paper)

Abstract

In the approach phase of large commercial aircraft, airframe noise - and in particular that from landing gears - is one of the dominating 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 dedicated 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 were 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 (DNWLLF). 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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More information

Published date: May 2005
Venue - Dates: 26th AIAA Aeroacoustics Conference, United States, 2005-05-23 - 2005-05-25

Identifiers

Local EPrints ID: 28434
URI: https://eprints.soton.ac.uk/id/eprint/28434
PURE UUID: b16c7469-2976-4a78-88a9-88094ff0bad3

Catalogue record

Date deposited: 05 May 2006
Last modified: 17 Jul 2017 16:01

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