Abstract

Expendable, miniature, low-cost turbojet engines are often equipped with axial turbines. These turbines usually have a low-pressure ratio, a simple design of the blades and vanes, and a relatively low performance.

In this article, we show that the main turbine characteristics, such as efficiency and exit flow angle, can be sufficiently improved using parametric optimization.

Using a fast code for mean-line turbine design in modeFRONTIER’s optimization environment allowed us to check about two million configurations and to determine the most important design parameters.