Abstract: Disclosed is a method to create a digital twin which is a copy of a machine or a production system in a computer environment and usage of the created digital twin in the computer-based calculation. Digital twins which are developed by the method are created by physical laws/equations rather than solely by sensor data. Developed digital twins could be created/served with API's by dividing thereof into small pieces and could be resold through a market place in form of an application.

Abstract: A system for cooling an equipment compartment of a gas turbine engine includes a cooling manifold for directing cooling air from outside of the equipment compartment to within the equipment compartment, a temperature sensor disposed within the equipment compartment, an electronically controlled cooling valve configured to control the volume of air flowing through said cooling manifold, and a control unit configured to receive electronic data information from the temperature sensor and transmit electronic data information to the electronically controlled cooling valve based on electronic information received from said temperature sensor.