Patent ID: 8393492
Filing Date: 2013-03-12
Classification: B64C,B64D

Abstract:
1. A vent pipe for an aircraft fuel system vent tank, said vent pipe comprising: an inlet arranged to provide fluid communication between the ullage of a vent tank and the interior of said vent pipe; an outlet arranged to provide fluid communication between the interior of said vent pipe and an ullage vent for venting said ullage to atmosphere; a flame barrier means interposed between said inlet and outlet and arranged to prevent a flame front being transmitted via said vent pipe; wherein the vent pipe in its entirety is substantially disposed within the vent tank: one or more corner sections are arranged to route said vent pipe between said ullage and said ullage vent; and one or more guide vanes having a generally curved cross-section located across the interior of said vent pipe within one or more of said corner sections, the longitudinal axis of each vane being arranged substantially perpendicular to a central axis of said vent pipe, said vanes being arranged to guide fluid flow around the respective corner section.