Though the calculations are concerned only with the flow in the neighbourhood of an infinite cone, it was thought that the flow near a finite cone or near the nose of a bullet with a conical head might be comparable with the calculations. Accordingly, measurements of two kinds were undertaken. The surface pressures on cones were measured at the National Physical Laboratory, and photographs of a bullet with a 60° conical head were taken at various speeds by the Research Department at Woolwich.
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Taylor et al. (1933) studied this question.