초록 ▼

A porous aircraft skin for wetted areas of an aircraft employed in conjunction with a suction system of the aircraft to draw air inwardly through pores of said skin for laminar flow control. The porous skin is compliant and includes a thin outer skin with fine pores bonded to a lower substantially t

A porous aircraft skin for wetted areas of an aircraft employed in conjunction with a suction system of the aircraft to draw air inwardly through pores of said skin for laminar flow control. The porous skin is compliant and includes a thin outer skin with fine pores bonded to a lower substantially thicker coarser pore compliant skin with the thicker skin in turn bonded to the structural skin of the aircraft. Vacuum chambers beneath the aircraft structural skin receive air sucked through the porous compliant skin and through communicating holes of the structural skin. One-way valves of flexible or semi-flexible material are inserted into the suction holes of the aircraft structural skin prior to the placement of the porous compliant skin. Low pressure above the aircraft lifting surfaces automatically closes the one-way valves thereby maintaining low pressure above the lifting surfaces and preventing reverse flow from destroying the lift afforded by said surfaces.

대표청구항 ▼

A suction surface laminar flow aircraft capable of fixed-wing flight constructed so that the interior wing root of the aircraft acts as a suction chamber for the suction porous skin wing, and whereby a low by-pass ratio engine is immersed in the wing root suction chamber and the by-pass portion of t

A suction surface laminar flow aircraft capable of fixed-wing flight constructed so that the interior wing root of the aircraft acts as a suction chamber for the suction porous skin wing, and whereby a low by-pass ratio engine is immersed in the wing root suction chamber and the by-pass portion of the jet engine becomes the suction pump for the suction laminar flow control system by separating the intake air for the by-pass portion of the jet engine from the jet engine intake air by use of appropriate separate intake ducts with ram air from the leading edge of the wing root being ducted directly to the intake for the jet engine air, and a separate by-pass air intake duct connected with ambient outside air at an appropriate location, with a variable open-close valve at the entrance of said exterior or ambient air by-pass duct, said by-pass duct also incorporating another variable open-close valve along the by-pass intake duct which is immersed in the wing root vacuum chamber and is designed to admit air from the surrounding wing root vacuum chamber to the by-pass air intake, said interior vacuum chamber by-pass valve being used in conjunction with said exterior ambient by-pass air intake valve to regulate suction flow for the laminar flow suction skin system.