The details of the efforts to synthesize a control-compatible multivariable model of a liquid nitrogen cooled, gaseous nitrogen operated, closed circuit, cryogenic pressure tunnel are presented. The synthesized model was transformed into a real-time cryogenic tunnel simulator, and this model is validated by comparing the model responses to the actual tunnel responses of the 0.3 m transonic cryogenic tunnel, using the quasi-steady-state and the transient responses of the model and the tunnel. The global nature of the simple, explicit, lumped multivariable model of a closed circuit cryogenic tunnel is demonstrated.


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    Titel :

    Synthesis of a control model for a liquid nitrogen cooled, closed circuit, cryogenic nitrogen wind tunnel and its validation


    Beteiligte:
    Balakrishna, S. (Autor:in) / Goglia, G. L. (Autor:in)

    Erscheinungsdatum :

    01.11.1979


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch





    Cryogenic nitrogen as a transonic wind-tunnel test gas

    ADCOCK, J. / KILGORE, R. / RAY, E. | AIAA | 1975


    Cryogenic nitrogen as a transonic wind-tunnel test gas

    Adcock, J. B. / Kilgore, R. A. / Ray, E. J. | NTRS | 1975



    Cost effective use of liquid nitrogen in cryogenic wind tunnels

    Mcintosh, Glen E. / Lombard, David S. / Martindale, David L. et al. | NTRS | 1987