Neupielot
Does anyone have a diagram that shows where are the vsv ( variable stator vanes?? no idea ...) located in the engines?
I trying to understand more about them...btw....are there other types of vanes in a jet engine?
The vsv's you are asking about are generally in the forward portion of the compressor section in the engine. The vanes rotate (twist) to optimize the efficiency of the compressor across the operating conditions of the engine, not just the cruise condition. By being able to rotate (open or close) the stationary vanes, the total performance of the compressor can be optimized while maintaining acceptable stall margins.
There are other vanes in the turbine section of the engine which are fixed and do not rotate. The function of turbine stationary vanes (non-rotating airfoils) is to pick up the air from the trailing edge of the rotating turbine blades in front and redirect the air to enter the leading edge of the rotating turbine blades behind it at the proper angle.
Hope this helps your understanding.
TD