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Flight reynolds number testing (1)

Objective

Conventional wind tunnels face physical limits matching Reynolds and Mach number ranges. Cryogenic wind tunnels, operating at temperatures as low as -163°C and with variable pressures, allow a realistic simulation of flight Reynolds and Mach numbers hence allowing a highly accurate flow simulation at flight cruise conditions. For a highly accurate measurement a highly accurate model is mandatory. This also applies to the mounting devices needed for holding the model in the test section. However, since real aircraft have no mounting devices it is crucial to understand and to minimise the effect of these necessary devices. FLIRET's objective is to improve the accuracy of performance measurements at flight Reynolds number in cryogenic wind tunnels. The project focuses intentionally on model mounting techniques under cryogenic conditions. Model mounting devices have a significant influence on high Reynolds number performance measurements, which are currently compensated by empirical correction methods. It is assumed that an accurate prediction of the aerodynamic performance in cruise may allow for up to 10% improvement in present state-of-the-art aircraft design. FLIRET will investigate several model-mounting alternatives and compare the devices with existing state of the art stings. This includes · Designing and manufacturing of several model mounting devices (stings) · Appling and harmonising CFD and prediction tools including the necessary meshes · Analysing the test results of each FLIRET work package · Analysing the applied model quality, manufacturing and handling strategies · Deriving recommendations for the industrial testing in cryogenic tunnels A large proportion of FLIRET's budget is used for testing in the European Transonic Wind (ETW) tunnel, the only major cryogenic facility in Europe. FLIRET's results will allow utilising cryogenic technology more efficiently and, hence, will increase the competitiveness of the aeronautics industry.

Call for proposal

FP6-2003-AERO-1
See other projects for this call

Funding Scheme

STREP - Specific Targeted Research Project

Coordinator

AIRBUS OPERATIONS GMBH
Address
Kreetslag 10
Hamburg
Germany

Participants (16)

AIRBUS ESPANA, S.L. SOCIEDAD UNIPERSONAL
Spain
Address
P John Lenon, S/n
Getafe
AIRBUS FRANCE SAS
France
Address
316, Route De Bayonne
Toulouse
AIRBUS UK
United Kingdom
Address
New Filton House
Bristol
AIRCRAFT RESEARCH ASSOCIATION LTD
United Kingdom
Address
Manton Lane
Bedford
DASSAULT AVIATION
France
Address
9 Rond-point Des Champs-elysées-marceldassault
Paris
DEHARDE-MASCHINENBAU H. HOFFMAN GMBH
Germany
Address
Am Hafen 14A
Varel
DEUTSCHES ZENTRUM FR LUFT UND RAUMFAHRT E.V
Germany
Address
Linder Hhe
Kln
EDUCATIONAL SCIENTIFIC AND EXPERIMENTAL CENTER OF MOSCOW INSTITUTE OF PHYSICS AND TECHNOLOGY
Russia
Address
9, Institutskii Per.
Dolgoprudny, Moscow Reg.
EUROPEAN TRANSONIC WINDTUNNEL GMBH
Germany
FEDERAL STATE UNITARY ENTERPRISE CENTRAL AEROHYDRODYNAMIC INSTITUTE, N.A. N.E. ZHUKOVSKY
Russia
Address
1, Zhukovsky
Zhukovsky, Moscow Region
HELSINKI UNIVERSITY OF TECHNOLOGY
Finland
Address
Otakaari 1
Espoo
INGENIEURBUERO DR. KRETZSCHMAR
Germany
Address
Rehdorfer Str. 4
Nuremberg
INSTYTUT MASZYN PRZEPLYWOWYCH IM. ROBERTA SZEWALSKIEGO POLSKIEJ AKADEMII NAUK
Poland
Address
Fiszera 14
Gdansk
OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AROSPATIALES'
France
Address
Avenue De La Division Leclerc N29
Chatillon
TECHNISCHE UNIVERSITÄT BERLIN
Germany
Address
Straße Des 17. Juni 135
Berlin
UNIVERSITY OF STUTTGART
Germany
Address
Keplerstrasse 7
Stuttgart