Balloon-Borne VLBI Reflector Structural Design Considering Failure of Sub-Reflector Adjustment Mechanism Using Multiobjective Optimization

Author(s):  
Nozomu KOGISO ◽  
Ryo KODAMA ◽  
Kimihiro KIMURA ◽  
Yasutaka SATOU ◽  
Akihiro DOI ◽  
...  
2014 ◽  
Vol 527 ◽  
pp. 190-196
Author(s):  
Yun Xiao Shan

The article has been discussed that it adopts step-by-step electric motor to come to auto-control through reforming the carrier and the objective lens£¬the design of the image acquisition device£¬adjustment mechanism of the Imaging lens is designed by adding the step-by-step electric motor pretending to realize high focusing accuracy and brings forward innovation design about the auto alignment device in micro field of view. This project aims to improve the ordinary microscopes and develop the digital acquisition system of the microscopic image which can accurately acquire the image information. It also can be wildly used in areas such as biomedicine, materials science, research experiments and so on.


Author(s):  
Valentina Sumini ◽  
Sam Wald ◽  
Caitlin Mueller ◽  
Claudio Chesi ◽  
Olivier L. de Weck

2020 ◽  
Vol 10 (18) ◽  
pp. 6380
Author(s):  
Alessandro De Gaspari

The design of morphing structures must combine conflicting structural requirements and multiple load conditions that are related to the aerodynamic shapes aimed at optimizing aircraft performance. This article proposes a multilevel approach for the design of adaptive compliant wing devices. A set of aerodynamic shapes, and associated their loads, is defined by a shape optimization, coupled with a three-dimensional parametric technique, that can identify only feasible shape changes due to the morphing. A topology and sizing multiobjective optimization drives the Pareto-optimal structural design of the compliant structure, which is able to deform itself to match, once actuated, all of the previously defined aerodynamic shapes. Next two design levels produce a more detailed solution which is extended until the definition of the complete device. A 90 pax, twin prop green regional aircraft is used as an innovative aircraft demonstration platform for the design of the morphing droop nose to be installed on the wing. The results show the structural capabilities of this device in terms of the external shape quality and the strain requirements. This work enables the validation of the design method and prove the functionality of compliant structures when accounting for the aeroelastic effects due to the interaction with the wing-box.


2015 ◽  
Vol 2 (4) ◽  
pp. 15-00058-15-00058
Author(s):  
Ryo KODAMA ◽  
Nozomu KOGISO ◽  
Masahiro TOYODA ◽  
Hiroaki TANAKA

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