Jet Tech: Compressor Stall
12,339A description of anti-stall technology applied to axial compressors in gas turbine engines.
If turbine engines are designed to run with maximum efficiency at their design point (100%), then the compressor geometry needs to be very aggressive. Such a design will not run at lower rpms, and will not even start. The variable vanes alter the angle of attack of the compressor, so it can start and get up to its design speed. To design a compressor for easy starting, you need to give up a lot of power if you don't have variable geometry.
Please watch the follow up to this video: Compressor Stall Q&A
This video is not for experts, and not for pilots. It's for the many people who are interested in turbine engine function, but may not be involved in the industry.
If you have a question, please check the index of my playlist called Your Questions Answered... first.
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