DESIGN AND EXPERIMENT OF TWOROTORED （TWOROTORED的设计和实验）.pdfVIP

DESIGN AND EXPERIMENT OF TWO-ROTORED UAV CYCLOCOPTER Choong Hee Lee*, Seung Yong Min**, Jong Won Lee**, Seung Jo Kim* *Seoul National University, **Korea Aerospace Research Institute Keywords: Cyclocopter, Cyclogyro, UAV, VTOL Abstract Cycloidal rotor system was studied at several institutes including NACA and University of Washington from 1920’s to This paper describes design and experimental 1940’s [1-6]. The rotor performance prediction works of a 100kg-or-heavier cyclocopter. A based on this theory was also compared with cyclocopter is a VTOL aircraft that has the wind tunnel test results [2]. However, Cycloidal Blade Systems (CBS). This system researches in this field had hardly been consists of a horizontal axis and several blades, performed for decades. In the late 1990’s, the which make it possible to change direction and research about the cycloidal blade system was magnitude of a thrust vector. The cyclocopter restudied at Bosch Aerospace [7, 8]. In developed in this study has two CBS rotors and December 2011 a team at the University of a horizontal tail rotor. To reduce drag,