RETURN GUIDE VANE
The operational principle is similar to the one of Inlet Guides Vane. The previous part of the vane should be curves owing to the fact that they receive the gas from the previous compression stage in tangential direction, the angle usually fluctuates between 45 degrees where it starts the Stonewall and 75 degrees where it begins Surge. The way and behavior of the back part of these vanes are similar to Inlet Guide Vanes them.
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