Parameters Predicting Failure of Partial Diagonal Tension Beams

Abstract

tions for the characteristics computation. I t may be worth noting that the maximum value of the stream direction on such an isobar depends only on the velocity magnitude. This provides a useful check on the accuracy of the approximation used. In a symmetrical nozzle, the two Mach lines through the sonic point on the axis are branch lines. That is, the sense of variation on an isobar of the stream direction is reversed where the isobar crosses either of these Mach lines. Conversely, it can be shown tha t such a reversal can occur on an isobar only across a branch line, if the wall curvature is continuous, upstream of the isobar. The characteristic equations for the two-dimensional steady isentropic irrotational supersonic flow of a perfect gas are