초록 ▼

A method of forming a shock-free supersonic elliptic nozzle, in which the nozzle to be designed is divided into three sections, a circular-to-elliptic section which begins at a circular nozzle inlet, an elliptic subsonic section downstream from the circular-to-elliptic section and a supersonic secti

A method of forming a shock-free supersonic elliptic nozzle, in which the nozzle to be designed is divided into three sections, a circular-to-elliptic section which begins at a circular nozzle inlet, an elliptic subsonic section downstream from the circular-to-elliptic section and a supersonic section downstream from the elliptic subsonic section. The maximum and minimum radii for each axial point in the circular-to-elliptic section and the elliptic subsonic section are then separately determined, the maximum and minimum radii being the radii for the widest part of an elliptic cross-section and the narrowest part of the elliptic cross-section, respectively. The maximum and minimum radii for each axial point in the supersonic section are determined based on the Method of Characteristics, Then, each of the three sections are based on the maximum and minimum radii for each axial point in the section. The resulting nozzle is acoustically superior.

대표청구항 ▼

A method of forming an elliptic supersonic nozzle having unequal major and minor axes, comprising the steps of: (a) providing design coordinates of a round supersonic nozzle which will translate to the elliptical supersonic nozzle to be formed; (b) translating the coordinates of the round nozzle int

A method of forming an elliptic supersonic nozzle having unequal major and minor axes, comprising the steps of: (a) providing design coordinates of a round supersonic nozzle which will translate to the elliptical supersonic nozzle to be formed; (b) translating the coordinates of the round nozzle into elliptic nozzle coordinates; and (c) forming the elliptic supersonic nozzle based on the elliptic nozzle coordinates.