Outflow valve for an aircraft

摘要

The invention relates to a valve for controlling a fluid flow from a first environment to a second environment, having a frame for disposing a separating element in the region of an opening, said element separating the first environment from the second environment, and a first flap and a second flap for controlling the fluid flow through the opening between the first environment and the second environment, the flaps being movable in the frame. The flaps have protrusions designed to reduce noise generation in the fluid flow.

主权项

1. An outflow valve for an aircraft to control a fluid flow between an inner environment and an outer environment of the aircraft, comprising:
a frame arranged to be disposed in an opening between the inner environment and the outer environment of the aircraft; a first flap and a second flap contacting the first flap, the flaps being moveable within the frame for controlling the fluid flow through the opening between the inner environment and the other environment, each of the first and second flaps including an inner surface oriented within the frame for facing the inner environment and an outer surface oriented within the frame for facing the inner environment and an outer surface oriented within the frame for facing the outer environment in a close position of the outflow valve, the first and second flaps having a mutually contacting area between the inner surface of the first flap and the outer surface of the second flap for closing the outflow valve, the first flap including a plurality of first protrusions spaced-apart on the inner surface of the first flap, the second flap including a plurality of second protrusions spaced-apart on the inner surface of the second flap, the pluralities of first and second protrusions being spaced from the mutual contacting area of the flaps, each of the first protrusions of the first flap having a bottom portion on the inner surface of the first flap, each of the second protrusions of the second flap having a bottom portion on the inner surface of the second flap, each of the first and second protrusions having side surfaces arranged in a closed outline projecting from the bottom portion of each of the first and second protrusions and an exposed top surface projecting into the fluid flow through the opening between the inner environment and the outer environment, the closed outlines of the side surfaces and the exposed top surfaces of the spaced-apart protrusions on the inner surfaces of the first and second flaps providing for creating overlapping, mutually disruptive vortices in the fluid flow to reduce noise, and the first and second protrusions being shaped differently.