Flow field at transonic Mach numbers of a hammerhead13; nose configuration with boat tail an les in13; face flow visualisation and surface pressure measurements.13; Surface steady pressure data shows presence13; of a shock on the cylindrical portion of the body that13; shifts downstream with increase in Mach number and13; boat tail angle. Maximum travel of the shock wave is13; observed at boat tail angle of 90 degrees. Analysis of13; unsteady pressure data shows evidence of shock oscillations13; with multiple frequency content at M=0.9.13; Results of the tests on a scaled model in two different13; tunnels show that the oscillations are due to the13; nature of unsteadiness in the tunnel. Variation of the13; boat tail angle does not appear to alter the unsteadiness13; in the cylindrical region at transonic speeds.
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