BASICS ON AIRBREATHING ENGINES
Figure1 2D engineering drawing Figure2 2D engineering drawing
Figure3 3D engine view
This engine is a twin-spool single-stage centrifugal high-bypass turbofan engine.
Reasons:
There are two shafts: HP and LP shaft;
The HP compressor is centrifugal and only one compressor;
There is two gas streams and the ratio of mass flow is high(>7.4 at design point);
There is a fan in front of the engine.
3) What are the three operating phases that will be founded in any type of propulsion? What are the mechanic parts that will be used for the realization of these three phases? Provide a schematic of these three phases and the mechanics parts associated.
Answers :
The three operating phases in any type of propulsion is: air compress, fuel combust, gas expansion.
The mechanical parts for these phases are: compressor, combustion chamber, turbines.
Figure 4 parts drawing
4) Based on the “Global Study”part and/or the “Schematics”tab (Thermodynamics application), locate the following thermodynamics station (2-25-3-41-45-5-8-18) on the DGEN
Figure 5 engine drawing
5）Based on the 3Dvisualization tool on the right screen, what are the mechanical parts of the
Figure 6 HP line
In low pressure line, there is fan, inlet guide vanes, LP turbine, exhaust nozzle. Like followed. Because these parts are involved in the low pressure.
