A thin inlet guide vane is investment cast of a high thermal conductivity material. Internal flow chambers include pins 76 bridging the flow chambers. The pins 76 provide strength and support to sheathing members, aid in the transfer of heat from air in the flow chambers to the sheathing members and provide air flow control. The vane may be formed with reverse camber (Fig. 6) and be formed with a twist in the range 2 to 25 degrees. IMAGE
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