Gas turbine and power plant application
The gas turbine engines used in commercial and military applications are classified into turbojet, turbofan, and turboprop. Each engine has major sub-systems such as compressors, turbines, and burners. The turbojet engine widely used in military aircraft has a low by-pass ratio and usually will have a mixer and after-burner components. The turbofan engine used in commercial aircraft will have high by-pass ratio fans. The turboprop engine predominantly used in low-medium altitude business or commercial aircraft will have a propeller in the front which provides the majority of the thrust.
The Jet Propulsion Library contains examples and template configurations for each of these engine types. The library has support for both on-design and off-design simulations supported for both a transient simulation and a steady-state simulation.
- In on-design mode, the engine sizing such as pressure ratio, corrected speed, corrected flow, and efficiency for scaled performance maps are computed from a set of the flight conditions such as SLS, TOC, CRZ.
- In off-design mode, the geometry is fixed and engine performance is analyzed. The same model could be used for both on-design/off-design simulations and transient/steady-state simulations.
The multi-point design methodology enables studying the engine performance for a combination of on-design and off-design simulations.