Method and system for designing frames and cases

A computer implemented method of designing an engine case static structure for a gas turbine engine, comprising the steps of:

• providing an engine case static structure knowledge base storing a plurality of engine case static structure design parameter signals corresponding to a plurality of design rule signals, wherein the engine case static structure knowledge base includes a design parameter signal for each of the design rule signals;
• receiving a parameter value signal corresponding to the design parameter signal;
• comparing the parameter value signal with the design parameter signal stored in the engine case static structure knowledge base;
• modifying the value of the design parameter signal if the parameter value signal has a first predetermined relationship with the design parameter signal and the design rule signal;
• creating a geometric representation of the engine case static structure by utilizing the design parameter signals;
• and
• displaying the geometric representation of the engine case static structure.

A computerized system for designing an engine case static structure of a gas turbine engine, comprising:

• an engine case static structure knowledge base for storing a plurality of engine case static structure design parameter signals corresponding to a plurality of design rule signals for creating a geometric representation of an engine case static structure;
• selection means for receiving a parameter value signal corresponding to the design parameter signals;
• processing means for comparing the parameter value signal with the design parameter signals stored in the engine case static structure knowledge base;
• and
• means for creating the geometric representation of the engine case static structure if the parameter value signal has a first predetermined relationship with the design parameter signal and the design rule signals.

A computerized system for designing an engine case static structure of a gas turbine engine, comprising:

• an engine case static structure knowledge base including a plurality of design rule signals for generating signals representing an engine case static structure model, wherein each of the design rule signals has a first relationship with a design parameter signal;
• input means for receiving a design parameter value signal corresponding to the design parameter signal;
• evaluation means for comparing the design parameter value signal with the plurality of design rule signals;
• adjustment means for modifying the engine case static structure model signals utilizing the design parameter value signal and the plurality of design rule signals;
• and
• creation means for generating signals representative of a geometric representation of the engine case static structure model signals.