Nozzle Shapes - Overview
Beyond the converging-diverging aspect of nozzles, there are different shapes which have an effect on the operation of a nozzle. At a constant altitude, these shapes are equivalent. As a rocket or plane ascends higher into the atmosphere however, the particular shape of the nozzle has a very important effect. This section discusses the advantages and disadvantages of each shape, along with some of the most recent advancement in nozzle technology.
JR