Development and Analysis-Driven Optimization of Superelastic Slat-Cove Fillers for Airframe Noise Reduction
| Autor: | Darren J. Hartl, William Scholten, Reggie T. Kidd, Travis L. Turner |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
020301 aerospace & aeronautics
Materials science business.industry Noise reduction Design of experiments Aerospace Engineering 02 engineering and technology Structural engineering Aerodynamics Aeroelasticity 01 natural sciences Finite element method 010305 fluids & plasmas 0203 mechanical engineering Deflection (engineering) 0103 physical sciences Airframe Minification business |
| Zdroj: | AIAA Journal. 54:1078-1094 |
| ISSN: | 1533-385X 0001-1452 |
| DOI: | 10.2514/1.j054011 |
| Popis: | Airframe noise constitutes a significant component of the total noise generated by transport aircraft during low-speed maneuvers, such as approach and landing; the leading-edge slat is a major source. Previous work has shown that the noise produced by the slat can be mitigated through the use of a slat-cove filler. Results from the initial prototype testing led to slat-cove filler concepts that incorporated a segmented structure and superelastic shape-memory alloy materials. A finite-element analysis model, based on the physical prototypes (with a shape profile optimized for maximum noise reduction), was created and used to analyze the slat-cove filler response to aerodynamic and slat retraction loads with the goal of optimization. The objective was minimization of the actuation force needed to retract the slat/slat-cove filler assembly subject to constraints that involved aeroelastic deflection of the slat-cove filler when deployed, maximum stress in the shape-memory alloy flexures, and the required abil... |
| Databáze: | OpenAIRE |
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