The density in supersonic flow was measured by the absorption of soft x-rays. The equipment is briefly described. Data obtained in undisturbed flow at M=2.83 are compared with values computed from Pitot pressure measurements. Measurements of the density distribution across a shock wave on a wedge-shaped model are presented. The suitability of the method, its limitations, and improvements of the technique are briefly discussed.
No takes yet. Share an insight, caveat, or question.
Eva M. Winkler (1951) studied this question.