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A new method of hypersonic flows generation is proposed and the results of an experimental study of hypersonic flow over cones with half-angles of τ1 = 3 ◦ and τ2 = 12 ◦ are presented in this paper. The Mach numbers of studied incident flows were M1 = 18 and M2 = 14.4, respectively. The use of a light-gas gun [1], where an accelerating channel was replaced with Laval nozzle, allows to obtain a hypersonic outflow with optical density sufficiently high for flow visualization and diagnostics with the help of optical methods. The flow structure was visualized by means of Schlieren method with use of straight Foucault knife [2]. Shadowgraphs were recorded by high-speed camera with frame rate of 300 000 fps and an exposure time of 1 μs. The Mach number for the incident flow was calculated from the inclination angle of the shock wave on shadowgraphs.

Investigation of hypersonic conic flows generated by a magnetoplasma light-gas gun equipped with Laval nozzle