PPRuNe Forums - View Single Post - Variable bleed valve, bleed valve and Ordinary Guide Vane
Thread: Variable bleed valve, bleed valve and Ordinary Guide Vane
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Old 11th Jun 2010, 00:21
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rmm
 
Join Date: May 2002
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If your talking about the OGV's in the by-pass duct (secondary) they're just airflow straighteners. These vanes are set and do not move. There are from memory 8 steel struts in the by-pass duct to support the fan case.

There are also 12 VBV's located in this area as well. They dump air from the LP compressor to the secondary air flow for surge protection.
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