Supersonic flow is produced in a de laval nozzle by constricting the flow in the center in order to increase the velocity. The shape will be hour-glass in nature. The initial mass flow rate and inlet pressure must be sufficient to produce a supersonic choked flow and the discharge pressure must be sufficiently low enough for supersonic flow to occur.

Chuck Yeager did in 1947.

L. R. Fowell has written:

'An exact theory of supersonic flow around a delta wing' -- subject(s): Conical flow, Supersonic flow, Delta wings

John M Seiner has written:

'The wedge hot-film anemometer in supersonic flow' -- subject(s): Aerodynamics, Supersonic, Anemometer, Base flow (Aerodynamics), Film coefficients (Physics), Supersonic Aerodynamics

David Owen Davis has written:

'Experimental and numerical investigation of steady, supersonic, turbulent flow through a square duct' -- subject(s): Turbulent flow, Square ducts, Supersonic flow