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shen jing exposed her face to the young housewife lu ying
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building a rope bridge with flying machines
Bookmarked 546 weeks ago building a rope bridge with flying machines in the eth zurich flying machine arenathe video shows quadrocopters autonomously assembling a rope bridge this is part of a body of research in aerial construction a field that addresses the construction of structures with the aid of flying machinesin this work a rope bridge that can support the crossing of a person is built by quadrocopters showing for the rst time that small ying machines are capable of autonomously realizing load-bearing structures at full-scale and proceeding a step further towards real-world scenarios except for the required anchor points at both ends of the structure the bridge consists exclusively of tensile elements and its connections and links are entirely realized by ying machines spanning 74 m between two scaffolding structures the bridge consists of nine rope segments for a total rope length of about 120 m and is composed of different elements such as knots links and braids the rope used for these experiments is made out of dyneema a material with a low weight-to-strength ratio and thus suitable for aerial construction of little weight 7 g per meter a 4 mm diameter rope can sustain 1300 kgthe vehicles are equipped with a motorized spool that allows them to control the tension acting on the rope during deployment a plastic tube guides the rope to the release point located between two propellers the external forces and torques exerted on the quadrocopter by the rope during deployment are estimated and taken into account to achieve compliant ight behavior the assembly of the bridge is performed by small custom quadrocopters and builds upon the flying machine arena a research and demonstration platform for aerial robotics the arena is equipped with a motion capture system that provides vehicle position and attitude measurements algorithms are run on a computer and commands are then sent to the ying machines via a customized wireless infrastructurein order to be able to design tensile structures that are buildable with flying robots a series of computational tools have been developed specifically addressing the characteristics of the building method the design tools allow to simulate sequence and evaluate the structure before buildingthe location of the scaffolding structure is manually measured before starting the construction the primary and bracing structure can then be realized without human intervention before realizing the stabilizers the locations of the narrow openings of the bridge are measured and input to the system which adapts the trajectories accordinglymore information and related publications can be found on the project website:http:wwwidscethzchresearch-dandrearesearch-projectsaerial-constructionhtml http:wwwgramaziokohlerarchethzchwebeforschung240htmlrelated robohub article: http:robohuborgwatch-flying-machines-weave-a-rope-bridge-you-can-walk-on creditsaerial construction is a collaboration between the institute for dynamic systems and control and gramazio kohler research at eth zurich switzerland 2015 researchersfederico augugliaro ammar mirjan fabio gramazio matthias kohler and raffaello d039andrea with contributions frommaximilian schulz marc-andr corzillius michael egli gregy huber timon winkler emanuele zarfati mina kamel gregory bttig alexander selwa evan wilson and augusto gandia locationeth zurich flying machine arena - http:wwwflyingmachinearenaorg acknowledgmentsthis work is supported by and builds upon prior contributions by numerous collaborators in the flying machine arena project see http:wwwflyingmachinearenaorgthis work was supported by the hartmann mller-fonds on eth research grant eth-30 12-1 and by the snsf swiss national science foundation |
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shen jing exposed her face to the young housewife lu yings tender pussy and ejaculated 91 gesture certification
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shandong zhang ying gives oral sex to her boss
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hong kong female riding fufu ying
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ying yang twins vs lil jon amp dj snake - salt shaker vs turn down for what mashup
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school girl xiaoying takes a bath and touches herself 3
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school girl xiaoying takes a bath and touches herself 2
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dandong wife zhang ying shows her face and cums without condom
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grind it up starring the ying yang twins
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