Design and Fabrication of a Passive 1-D Morphing Aircraft Skin

2008 ◽  
Author(s):  
Edward Bubert ◽  
Benjamin Woods ◽  
Curt Kothera ◽  
Norman Wereley
Keyword(s):  
Morphing Aircraft ◽  
Aircraft Skin

Stress Relief in Contact-Aided Cellular Compliant Mechanisms

2008 ◽  
Author(s):  
Vipul Mehta ◽  
Mary Frecker ◽  
George Lesieutre
Keyword(s):  
Compliant Mechanisms ◽  
High Strain ◽  
Stress Relief ◽  
Cellular Structures ◽  
Morphing Aircraft ◽  
Fracture Failure ◽  
Global Strain ◽  
Aircraft Skin ◽  
Structural Mass ◽  
Contact Mechanism

Cellular structures with an internal contact-mechanism are investigated. These contact-aided compliant mechanisms are shown to reduce the local tensile stresses, thereby providing additional global strain before yielding or fracture failure compared to honeycomb or auxetic cellular structures. An analytical model for such structures is developed and it is validated using FEA simulations. Two different materials are considered for comparison. More than 100% improvement in global strain capability is possible using the contact. A high-strain morphing aircraft skin is examined as an application of these mechanisms. The contact-aided cellular compliant mechanisms are more advantageous in terms of both the structural mass as well as the global strain compared to a non-contact design. In the application considered the stress-relief mechanism increased the global strain capability by as high as 37%.

Contact-aided compliant mechanisms for morphing aircraft skin

2008 ◽  
Author(s):  
Vipul Mehta ◽  
Mary Frecker ◽  
George Lesieutre
Keyword(s):  
Compliant Mechanisms ◽  
Morphing Aircraft ◽  
Aircraft Skin

Design and Fabrication of a Passive 1D Morphing Aircraft Skin

2010 ◽  
Vol 21 (17) ◽  
pp. 1699-1717 ◽  
Author(s):  
Edward A. Bubert ◽  
Benjamin K.S. Woods ◽  
Keejoo Lee ◽  
Curt S. Kothera ◽  
N.M. Wereley
Keyword(s):  
Morphing Aircraft ◽  
Aircraft Skin

Design of a Multifunctional Aircraft Skin With Energy Harvesting via Entropy Generation Minimization

Aerospace ◽  
2006 ◽  
Author(s):  
K. Ahlers ◽  
K. P. Hallinan ◽  
B. Sanders ◽  
R. McCarty
Keyword(s):  
Energy Harvesting ◽  
Entropy Generation ◽  
Waste Heat ◽  
Skin Layer ◽  
Skin Thickness ◽  
Power Devices ◽  
Volume Fractions ◽  
Entropy Generation Minimization ◽  
The Matrix ◽  
Aircraft Skin

The Entropy Generation Minimization (EGM) approach is applied to the design of a new integrated radar aircraft skin, which both meets requisite aircraft structural needs and provides a pathway for the waste heat from structurally integrated power devices. Thermoelectric (TE) devices, sandwiched between a heterogeneous skin layer and the radar devices for the purpose of harvesting waste heat rejected to the ambient, are considered in the analysis. A heterogeneous skin layer is designed using the EGM approach, which is then applied to the overall mission of the aircraft to determine the optimal skin thickness and volume fractions of the matrix and inclusions in the composite skin.

scholarly journals Optimum Wing Shape of Highly Flexible Morphing Aircraft for Improved Flight Performance

2016 ◽  
Vol 53 (5) ◽  
pp. 1305-1316 ◽  
Author(s):  
Weihua Su ◽  
Sean Shan-Min Swei ◽  
Guoming G. Zhu
Keyword(s):  
Wing Shape ◽  
Flight Performance ◽  
Morphing Aircraft
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