Use this component to specify the Engine Pressure Ratio (EPR). The pressures used for determining the EPR value can be chosen from the 2 drop down list boxes, usually the ratio of PT7/PT2 is used by low bypass turbofan engines, and for high bypass turbofan engines e.g. PT45/PT2 (see the aerospace standard 755 for station numbering). Some engine manufacturers use the total exit pressure of the bypass; PT14/PT2 (station 14 is located in the bypass channel between the fan exit, 13, and the nozzle inlet, 16 or 17).
This component adds an error equation to the model (EPR - requested EPR) and thus requires to set an extra state to the model (e.g. fuel flow to free state, or nozzle area).
NOTE:
This component is deprecated and does not work with components from the Case Control Component library. The functionality is replaced by the equation schedule components. The component is kept for backwards compatibility.
EPR Control
