Abstract
The aerodynamic characteristics of open rotor hovering in confined environment are extensively studied, but few papers focus on shrouded rotor. In order to study aerodynamic performance and flowfie...
Highlights
Over the past decades, micro air vehicles (MAVs)[1,2,3,4,5] have boomed in the military and civil applications
For the parameter b of shrouded rotor (SR), the value in in-ground effect (IGE) flight is bigger than that in in-ceiling effect (ICE) flight. These results show that ICE flight is more beneficial to open rotor (OR) than IGE flight
Due to the special characteristics, SR MAVs are more suitable than OR to fly in confined space where they may have to fly around obstacles or in close proximity to objects
Summary
Micro air vehicles (MAVs)[1,2,3,4,5] have boomed in the military and civil applications (e.g. reconnaissance, rescue, payload delivery, aerial photography and videography, and so on). Rotary wing MAVs6,7 which are vertical take-off and landing (VTOL) aircrafts with hovering and low-speed flight capabilities are suitable to perform missions in confined environment. Compared with traditional rotorcrafts, shrouded rotor (SR) aircrafts have some advantages, for example, high maneuverability, low noise, and producing more thrust than open rotor (OR) at the same size and power consumption.[8,9,10] In addition, relative to OR, SR considerably decreases the safety area[11]. Advances in Mechanical Engineering required for flight so that SR can hover in closer proximity than OR to confined conditions. As an aerial manipulator,[12,13,14] SR aircrafts equipped with robotic arms can carry out operations in close proximity to objects. SR gains significant advantages over OR flying in confined environment
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