Abstract
The perturbation, problem for steady plane transonic flow is discussed (I) by means of particular exact solutions of the variational equations, and (II) by a general existence theorem valid for a modified Tricomi gas law. It is shown that even for a correctly set boundary-value problem and with arbitrarily smooth perturbations, the flow will, in general, be physically impossible because of infinite accelerations arising in the supersonic region. The breakdown of transonic flow adjacent to a semi-infinite body is proved for specified perturbations of the boundary.
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