CORDIS
EU research results

CORDIS

English EN
Flight reynolds number testing (1)

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.

Coordinator

AIRBUS OPERATIONS GMBH

Address

Kreetslag 10
Hamburg

Germany

Administrative Contact

Winfried KUEHN (Dr)

Participants (16)

Sort alphabetically

Expand all

AIRBUS ESPANA, S.L. SOCIEDAD UNIPERSONAL

Spain

AIRBUS FRANCE SAS

France

AIRBUS UK

United Kingdom

AIRCRAFT RESEARCH ASSOCIATION LTD

United Kingdom

DASSAULT AVIATION

France

DEHARDE-MASCHINENBAU H. HOFFMAN GMBH

Germany

DEUTSCHES ZENTRUM FR LUFT UND RAUMFAHRT E.V

Germany

EDUCATIONAL SCIENTIFIC AND EXPERIMENTAL CENTER OF MOSCOW INSTITUTE OF PHYSICS AND TECHNOLOGY

Russia

EUROPEAN TRANSONIC WINDTUNNEL GMBH

Germany

FEDERAL STATE UNITARY ENTERPRISE CENTRAL AEROHYDRODYNAMIC INSTITUTE, N.A. N.E. ZHUKOVSKY

Russia

HELSINKI UNIVERSITY OF TECHNOLOGY

Finland

INGENIEURBUERO DR. KRETZSCHMAR

Germany

INSTYTUT MASZYN PRZEPLYWOWYCH IM. ROBERTA SZEWALSKIEGO POLSKIEJ AKADEMII NAUK

Poland

OFFICE NATIONAL D'ETUDES ET DE RECHERCHES AROSPATIALES'

France

TECHNISCHE UNIVERSITÄT BERLIN

Germany

UNIVERSITY OF STUTTGART

Germany

Project information

Grant agreement ID: 516118

  • Start date

    1 February 2005

  • End date

    31 July 2008

Funded under:

FP6-AEROSPACE

  • Overall budget:

    € 7 952 761

  • EU contribution

    € 4 486 600

Coordinated by:

AIRBUS OPERATIONS GMBH

Germany