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For the past few years, unmanned aerial vehicles (UAVs) have been successfully employed in several investigations and exploration tasks such as aerial inspection and manipulations. However, most of these UAVs are limited to open spaces distant from any obstacles because of the high risk of falling as a result of an exposed propeller or not enough protection. On the other hand, a UAV with a passive...
This letter proposes a planar omnidirectional crawler mobile mechanism. This mechanism is the basis for the mobility of search and rescue robots. A planar omnidirectional crawler aims to facilitate penetration into a narrow path and soft or fragile ground. In this letter, the effectiveness of the proposed transmission mechanism is experimentally determined. In addition, a planar omnidirectional crawler...
Tethered robots often experience entangling of their cables with obstacles in uncertain disaster environments. This paper proposes a spherical tether handling device that unfastens a robot's tether during surveys by releasing the tether and carrying it aside. By using a differential mechanism, the device drives shells and rollers that hold the tether. On flat surfaces, the device moves forward by...
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