| 摘要 |
A laminar flow surface 24 for an aircraft has an outer member 26 defining an aerodynamic shape for a fluid. An inner member 28 defines a chamber 30 with the outer member 26, and an inlet pipe 52 fluidly connects ambient air with the chamber 30. The surface 24 comprises a porous region 32 at a leading region 34 of the outer member 26, the porous region 32 allowing a flow of fluid into a duct 36. The inlet pipe 52 comprises a venturi portion (54, Fig 3) having a narrow low pressure part (56, Fig 3) to which the duct 36 is connected to provide suction to the porous region 32 . The laminar flow surface 24 may be a nacelle, upper wing surface, tailplane or fuselage of an aircraft.
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