© 1959 by Oxford University Press
THE BEHAVIOUR OF AN AXIALLY SYMMETRIC SONIC JET NEAR TO THE SONIC PLANE

(
(Armament Research and Development Establishment, Fort Halstead Sevenoaks, Kent)
Now at Sir John Cass College Jewry St., London E.C.
)
The behaviour near the sonic plane of an axially symmetric sonic jet of gas, emerging into a region of lower pressure, is studied. The form of the singularity at the sonic plane is found, and the lowest terms of the series expansions of the variables of state near to the plane are obtained. In particular the corresponding solutions for this case and for the two-dimensional problem are compared, and it is shown that there are important differences between them.