A self excitation and control system for wind tunnel dynamic stability measurements

Jategaonkar, RV and Viswanathan, R and Rao, Vasudeva NA (1980) A self excitation and control system for wind tunnel dynamic stability measurements. Journal of Aeronautical Society of India, 32 . pp. 37-44.

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    The paper describes the design and development of a fast acting self-excitation and control system based on the principles of regenerative and negative feedback for phase resonance testing of aerodynamic models in wind tunnels. Simulation tests and analyses using a linearized model of the drive system are carried out, and results indicate that the system would function even if the system damping becomes neutral or negative. Experiments for dynamic stability measurements show that the control system meets all specifications and performs satisfactorily even in the presence of moderate amounts of turbulence in the air flow.

    Item Type: Journal Article
    Uncontrolled Keywords: Dynamical systems;Dynamics;Control systems;Mathematical models;Aeronautics;Stability;Wind tunnel testing; Aerodynamics;Wind tunnels;Excitation;Damping;Turbulent flow; Computer simulation;Ultrasonic testing;Drives;Turbulence; Computational fluid dynamics;Feedback;Specifications
    Subjects: AERONAUTICS > Aerodynamics
    Division/Department: Systems Engineering Division, Propulsion Division, Other
    Depositing User: M/S ICAST NAL
    Date Deposited: 06 Dec 2006
    Last Modified: 24 May 2010 09:53
    URI: http://nal-ir.nal.res.in/id/eprint/3628

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