Available Technology

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

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.
Inventors: 

David P. Lockard, Mehdi R. Khorrami, Travis L. Turner, Craig L. Streett, Reggie T. Kidd, Douglas Leo Weber

Patent Number: 
US9242720
Patent Issue Date: 
February 26, 2016
Agency
NASA
State: 
Virginia
Lab Representatives
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