Since 1973 DLR operates rotor test stands for wind tunnel experiments. Using this technology mach number scaled down models are tested and characterized. The results are used for research purposes as well as for industrial customers in order to perform optimization of efficiency, reduction of noise and reduction of vibration. The scaling factor of the rotor model is 1:2.5 . The rotational speed is scaled up in the same ratio in order to get the same mach numbers at the blade tips compared with the original. This leads to 2 m diameter of the rotor and a speed of 1050 rpm. This paper describes the development of the measurement system for the rotor test stand of the Institute of Flight Research. The different topics like sensors, instrumentation, analog-to-digital conversion using delta sigma converters and real time high speed data distribution and storage are covered. A layer based model will be described consisting of data acquisition, collection storage and distribution. According to this layer based model the new system is under development. Its parameter and specifications are discussed. The system will have 512 channels of 24 bit resolution, 100 kHz sample rate each. Thus the sum data rate will be about 100 Mbytes/s being subject to be stored and distributed in real time. Finally the current status of the system and future plans will be discussed.


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    Title :

    TEDAS II - High speed data acquisition, storage and distribution


    Additional title:

    TEDAS II - Hochgeschwindigkeits-Datenerfassung, -speicherung und -verteilung


    Contributors:
    Gelhaar, B. (author)


    Publication date :

    2000


    Size :

    12 Seiten, 14 Bilder, 4 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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