초록 ▼

An aircraft weapons bay acoustic suppression apparatus is disclosed. The apparatus reduces or eliminates acoustic resonance within an open cavity of an aircraft such as a weapons bay of an aircraft in flight. The apparatus includes an oscillatable spoiler plate which is extended into the airstream.

An aircraft weapons bay acoustic suppression apparatus is disclosed. The apparatus reduces or eliminates acoustic resonance within an open cavity of an aircraft such as a weapons bay of an aircraft in flight. The apparatus includes an oscillatable spoiler plate which is extended into the airstream. At least one shaker is placed in operative engagement with the spoiler plate in order to oscillate the spoiler plate at high frequencies and high amplitudes to seed the shear layer with frequencies which directly complete with the natural frequency of the shear layer vortices. In this way, the damage arising from natural shear layer vortices can reduced or canceled within the weapons bay.

대표청구항 ▼

[ I claim:] [1.]1. An apparatus for suppressing acoustic resonance within an open cavity of an aircraft, comprising:an oscillatable spoiler plate received within said cavity and adjacent the leading edge thereof; said spoiler plate being aligned transversely to the direction of airflow across the ca

[ I claim:] [1.]1. An apparatus for suppressing acoustic resonance within an open cavity of an aircraft, comprising:an oscillatable spoiler plate received within said cavity and adjacent the leading edge thereof; said spoiler plate being aligned transversely to the direction of airflow across the cavity and oscillatable back and forth in the direction of airflow across the cavity; and,a shaker in operative engagement with said spoiler plate for oscillating said spoiler plate.