COMPUTER IMPLEMENTED METHODS, APPARATUS, COMPUTER PROGAMS AND NON-TRANISTORY COMPUTER READABLE STORAGE MEDIUMS FOR AUTOMATICALLY DESIGNING A SECONDARY AIR SYSTEM FOR A GAS TURBINE ENGINE

摘要

A computer implemented method of automatically designing a secondary air system for a gas turbine engine. The method comprises: receiving a geometry model of at least a part of a gas turbine engine, the geometry model including a plurality of data entities for a plurality of features of the gas turbine engine; defining a plurality of cavities using the plurality of data entities of the geometry model; determining a subset of cavities of the plurality of cavities that define at least a part of the secondary air system; and generating a secondary air system model from the determined subset of cavities that define at least a part of the second airflow system.