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Friday, 20. July 2018

It works :-)

COBRA with mounted rotating camera

Small part of the team in front of the experimental COBRA airplane

preparing the mask for painting the blade

real teamwork - sticking the mask to the blade

final painted propeller blade

first wireless images from the rotating camera

COBRA with mounted rotating camera flying the first time

after successful test flight

example recording

first data processing result - reference surface (dotted) and example of in-flight shape (solid)

flight test with rotating camera successfully completed

Beginning of January the rotating camera for measuring the deformation of a propeller blade during flight was flying the first time. The flight tests were performed by Evektor, Avia Propeller and DLR at the EVEKTOR plant in Kunovice (CZ).

The painting of the blade and the balancing of the complete propeller with the mounted rotating camera was performed at AVIA Propellers in Prague (CZ). To paint the stochastic pattern for IPCT on the blade, a painting mask was created and sticked on the blade. After painting, the whole system (Propeller with painted blade and mounted rotating camera) was balanced and transported to EVEKTOR. There it was fitted to the Evektor VUT-100 COBRA experimental airplane.

During four flights in total the new developed rotating camera was recording one propellerblade phase locked and also once with a moving phase shift to measure the complete revolution.

In total around 200GB of image data was recorded including several on-ground and in-flight propeller loadings. First data evaluation showed, that the recordings can be processed by IPCT to get information about the in-flight shape and behaviour of the propellerblade.

Thanks to the teams of EVEKTOR, AVIA-Propeller and DLR, as well as the polish company HARDsoft the flight test of the rotating camera was a great success. For the documentation of the test we also thank fotoworx photo&film.

 

 

 

                                                                                     image source: DLR

Tuesday, 21. January 2014
 
AIM² Advanced In-Flight Measurement Techniques, c/o German Aerospace Center (DLR), Bunsenstrasse 10, 37075 Goettingen, Germany, Tel: +49 551 709 2252, Fax: +49 551 709 2830, Email: aim.supportdlr.de