An analysis is made of a lateral-control problem in which the pilot, through normal application of control, induces divergent oscillations in bank angle. The problem, first encountered on the X-15 simulator and later confirmed in flight, is explained through the use of root-locus plots of the pilot-airplane combination in which the pilot is represented by a human transfer function. A parameter is developed which is useful for predicting the lateral-control problem and for showing the effect of the principal aerodynamic and inertial parameters. Also, means of determining regions in the flight envelope where the pilot-airplane would be susceptible to lateral instability are developed.


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    Title :

    Analysis of a Pilot Airplane Lateral Instability Experienced with the X-15 Airplane


    Contributors:

    Publication date :

    1961-11-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English






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