System for reducing aerodynamic noise at a supplementary...

Details System for reducing aerodynamic noise at a supplementary... System for reducing aerodynamic noise at a supplementary...

2011-08-30

2011-08-30

Dinh, Tien (Department: 3644)

Aeronautics and astronautics

Aircraft sustentation

Sustaining airfoils

C244S210000, C244S198000, C244S213000, C244S214000

Reexamination Certificate

active

08006941

ABSTRACT:
A system for reducing aerodynamic noise of a supplementary wing of an aircraft is provided. The supplementary wing is hinged to a main wing and is extendable when a gap region between the main wing and the supplementary wing is opened. The system includes a separating surface which can be moved into the gap region when the supplementary wing is extended and which extends at least partially along a separation flow line between a vortex flow region and a gap flow for the air flowing in the gap region. The separating surface is an n-stable surface which through an actuator device can be moved between at least one of the stable states and at least one additional state.

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