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To overcome the limitations of payload and flight endurance, a hybrid powered multi-rotor system is designed by dual systems which include engine-driven quad-rotor and motor-driven quadrotor. The proposed multi-rotor system is named Quad-in-Quad (QiQ) system. Since the characteristic of high thrust, engine takes in charge of major lift of the system. To provide stable lift, microprocessor control...
Multi-rotor systems have been developed into better performance for mature applications. Due to lift to weight balance on motor power and battery energy, they are limited in payload and flight endurance. Since gasoline power has 44 times better energy density than battery, integration of gas engine and DC brushless motor into a vertical take-off and landing (VTOL) system will gain much higher lift...
Unmanned vertical take-off/Landing (UVTOL) Aircraft have received great attention for their flexibility and controllability in many applications requiring short range, low altitude air surveillance. Image acquisition and video recording from the air is useful for many demands. The operation of a UVTOL requires altitude stabilization with a very limited payload. This paper presents a flight control...
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