‘Technology’ for adjustable flow path systems designed to maintain engine stability for gas generator turbines, fan or power turbines, or propelling nozzles, as follows: 1. ‘Development’‘technology’ for deriving the functional requirements for the components that maintain engine stability; 2. ‘Development’ or ‘production’‘technology’ for components unique to the adjustable flow path system and that maintain engine stability; 3. ‘Development’‘technology’ for the control law algorithms, including ‘source code’, unique to the adjustable flow path system and that maintain engine stability