Master Degree / Yüksek Lisans Tezleri
Permanent URI for this collectionhttps://hdl.handle.net/11147/3008
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Master Thesis Design of Hidam: Highly Deployable Articulated Mast for Positioning of Satellite Components(01. Izmir Institute of Technology, 2022) Cebeci, Yunus; Kiper, Gökhan; Kiper, GökhanWith the emerging space activities, use of deployable structures for aerospace applications increased in recent years. Deployable masts are special types of these structures where longitudinal deployment is required and deployable truss mast is one of the deployable mast types. In this thesis, a new design methodology for deployable truss masts is introduced resulting in superior packing ratio. It is a type of a Wren platform which has a single degree of freedom, and it is called HiDAM: Highly Deployable Articulated Mast. The mathematical model for HiDAM is constructed and the packing ratio is maximized by optimizing part lengths. Considering the set design requirements, the constructional design is carried out, first in two dimensions where mathematical model is developed, then in three dimensions. Along with the constructional design, the prototype of HiDAM is manufactured and assembled for a single deployable unit with which overall mechanism movement can be seen. It is presented that with the proposed deployable truss mast HiDAM, the packing ratio can be increased by about 12% compared to the most recent deployable truss mast examples in the literature.Master Thesis Design of Deployable Structures Comprising Altmann Linkages(01. Izmir Institute of Technology, 2020) Yıldız, Görkem; Kiper, GökhanThe main objective of this thesis is to investigate possible mobile networks comprising modified Altmann linkages which can be used as deployable structures. Altmann linkage is an overconstrained single-loop linkage with six revolute joints. Within the scope of this thesis, first a modified version of the Altmann linkage is introduced. The modified version of the linkage allows more feasible solutions for constructional design compared to the original linkage. Then, the loop closure equations are written and input/output relationship of the linkage are obtained. Next, possible networks of modified Altman linkages are examined. The networks are obtained either by taking two common links between adjacent loops, or connecting adjacent loops with two new revolute joints without any common links. Also, mobility analysis is performed for each network. Finally, the deployment stages of obtained networks are modelled in a CAD software. Some of the derived networks are already noted in the literature, but several novel networks are introduced in this thesis.