Some experimental and theoretical studies have been made of axisymmetric free jets exhausting from sonic and supersonic nozzles into still air and into supersonic streams with a view toward problems associated with propulsive jets and the investigation of these problems.nFor jets exhausting into still air, consideration is given to the effects of jet Mach number, nozzle diver¬gence angle, and jet static-pressure ratio upon jet structure, jet wavelength, and the shape and curvature of the jet boundary. Studies of the effects of the ratio of specific heats of the jets are included as are obser¬vations pertaining to jet noise and jet simulation.
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