For wind tunnel tests, particularly when the model is high loaded, its deformation is a very sensitive parameter which can be of the same order of magnitude compared to the Reynolds number. The progresses in the camera resolution as well as in the image treatment methods, give now the possibility to develop and use a reliable MDM (Model Deformation Method) which can be proposed to customers. In 2006 ONERA has decided to develop by its own a MDM system with two main goals: a low measurement uncertainty (lower then 0.1° for twist) that could be improved continuously, an easy and flexible system with a reduced cost. Our method is based on stereovision principle and model markers. In order to validate the new system, two wind tunnel tests have been performed with a complete civil aircraft model in Ft. This wind tunnel is a low-speed, pressurized wind tunnel of h=3.5 m by w=4.5 m test section used by industry as well as for research activities. This paper is divided into two parts. The first one will present Ft and the different steps of the ONERA MDM method and the associated hardware, the second part will present the main results of two test campaigns performed in a partnership with Airbus, particularly examples of checking of the MDM system and example of model deformation measurements.
Model Deformation Measurement in the ONERA F1 Wind tunnel
2007-06-01
2824653 byte
Conference paper
Electronic Resource
English
Model deformation measurement in the ONERA F1 wind tunnel
Tema Archive | 2007
|ONERA Research Icing Wind Tunnel
TIBKAT | 2022
|ONERA Research Icing Wind Tunnel
AIAA | 2022
|Model Deformation Measurement (MDM) at Onera
AIAA | 2007
|Hermes first force measurement in ONERA-F4 wind tunnel
British Library Online Contents | 1995
|