Abstract
This paper introduces a novel Morphing Wing structure known as the Active Compliant Trailing Edge (ACTE). ACTE structures are designed using the concept of “distributed compliance” and wing skins of ACTE are fabricated from high-strength fiberglass composites laminates. Through the relative sliding between upper and lower wing skins which are connected by a linear guide pairs, the wing is able to achieve a large continuous deformation. In order to present an investigation about aerodynamics and noise characteristics of ACTE, a series of 2D airfoil analyses are established. The aerodynamic characteristics between ACTE and conventional deflection airfoil are analyzed and compared, and the impacts of different ACTE structure design parameters on aerodynamic characteristics are discussed. The airfoils mentioned above include two types (NACA0012 and NACA64A005.92). The computing results demonstrate that: compared with the conventional plane flap airfoil, the morphing wing using ACTE structures has the capability to improve aerodynamic characteristic and flow separation characteristic. In order to study the noise level of ACTE, flow field analysis using LES model is done to provide noise source data, and then the FW-H method is used to get the far field noise levels. The simulation results show that: compared with the conventional flap/aileron airfoil, the ACTE configuration is better to suppress the flow separation and lower the overall sound pressure level.
Highlights
Morphing aircraft is a kind of multi-mission aircraft and it can change its own external configuration substantially in order to adapt to different task environments during flight[1]
This paper introduces a novel Morphing Wing structure known as the Active Compliant Trailing Edge (ACTE)
This paper introduces a novel morphing wing structure known as the Active Compliant Trailing Edge (ACTE) structure
Summary
Morphing aircraft is a kind of multi-mission aircraft and it can change its own external configuration substantially in order to adapt to different task environments during flight[1]. In order to achieve better fuel economy in flight,aircraft’s wings require high maximum lift coefficient during taking-off or landing and high lift-drag ratio during cruising[2]. Adaptive wing is an important research field for this purpose. In all of the research for this purpose, adaptive wing is an important component. Morphing aircraft can subtly change the wing’s curvature to match the changing weight and get better fuel efficiency. Compared with traditional rigid wing, the multi-mission adaptive wing can achieve higher efficiency and will plays an important role in military and civilian fields[3]
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