Quadrocopters build a rope bridge

Multicopter - it is not just expensive toys, which can sometimes take beautiful videos and photos from the camera is fixed on them. UAVs can think of a lot more applications than pulmonary delivery of goods . Multicopter easily perform complex and precise movements, they get given points in space, bypassing obstacles and hang in space. The disadvantage is the low weight of the payload. As the researchers show ETH Zurich, quadrocopters able to work together with a rope and build a bridge over which man can pass.

In the video above, drones quadrocopters build a complex structure. Everything takes place in a special room measuring 10 × 10 × 10 meters in Zurich, which is called Flying Machine Arena . The space of the room is empty - there are have a camera, precision motion capture system, a wireless communication network and guide the structure, which is supported and created bridge. Calculations are performed to control the land. The bridge is constructed from polyethylene rope marks "Dyneema» (Dyneema). This elastic material with high strength to weight ratio. With a diameter of 4 mm thread weighs 7 grams per meter and can withstand up to 1,300 kilograms.

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Each set of drones with a rope reel, and it is directed via a special groove with an outlet between the propellers. Each reel has an electric motor for controlling thread tension. Most fit in with the different techniques: It nodes, loops and braiding. On the bridge length of 7, 4 meters took about 120 meters of rope. First, the location is determined by the guide of metal structures and necessary starting point. Then, the bridge is going to fully automatically without human intervention. Drones only placed the rope using existing pile-guide.

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To ensure proper operation, the system measures the external forces and moments. The data are taken into account. After collecting a bridge over it, you can immediately walk, and that researchers demonstrate in a video posted to the kata. Only after this stabilizers are added to the bridge is not swayed, and it was easier to move around.

A team of researchers has created a software to facilitate the creation of such structures and their construction using drones. Set simulates the structure, a collection of steps in the right order and evaluates the structure before the start of the assembly process.

This is not the first such demonstration: Two years ago, researchers have published no less spectacular video, though not trying to demonstrate the practical application of technology.



Страница Project site ETH Zurich

Source: geektimes.ru/post/262858/