United States of America As Represented by the Administrator of Nasa

Craig L Streett

Mehdi R Khorrami

Travis L Turner

David P Lockard

Reggie T Kidd

Albert R Allen

Douglas Leo Weber

John C Lin

Henry H Haskin

James B Moore

John W Mulvaney

David L Long

Scott E Brynildsen

Methods, systems and devices of the various embodiments may provide slat-cove fillers configured to reduce leading-edge slat noise on aircraft, such as transport aircraft.

Slat-cove filler for wing structure of an aircraft

Wing structure that includes slat-cove fillers configured to reduce leading-edge slat noise on aircraft, such as transport aircraft.

Wing structure for an aircraft

A slat cove filler is utilized to reduce airframe noise resulting from deployment of a leading edge slat of an aircraft wing. The slat cove filler is preferably made of a super elastic shape memory alloy, and the slat cove filler shifts between stowed and deployed shapes as the slat is deployed. The slat cove filler may be configured such that a separate powered actuator is not required to change the shape of the slat cove filler from its deployed shape to its stowed shape and vice-versa. The outer contour of the slat cove filler preferably follows a profile designed to maintain accelerating flow in the gap between the slat cove filler and wing leading edge to provide for noise reduction.

Autonomous slat-cove-filler device for reduction of aeroacoustic noise associated with aircraft systems

A noise abatement device that is positioned adjacent to a body. The noise abatement device generally includes tabs or cavities which thicken the shear layer created by fluid flow over, around, or near the body, by creating horseshoe-shaped vortices; this thickening of the shear layer reduces the strength of fluctuations in the flow which produce noise.

Device and method for reducing aircraft noise

Growing community of inventors

Virginia Beach, VA, United States of America

Craig L Streett