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http://dx.doi.org/10.5139/JKSAS.2013.41.1.31

A Study on Longitudinal Flight Dynamics of a QTW UAV  

Jung, Ji In (Department of Aerospace Engineering, Chungnam National University)
Hong, Sung Tae (Department of Aerospace Engineering, Chungnam National University)
Kim, Seungkeun (Department of Aerospace Engineering, Chungnam National University)
Suk, Jinyoung (Department of Aerospace Engineering, Chungnam National University)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.41, no.1, 2013 , pp. 31-39 More about this Journal
Abstract
A Quad Tilt Wing UAV is a new concept hybrid UAV having the advantages of both fixed-wing and rotary-wing aircraft. This paper presents longitudinal flight dynamic characteristics of a Quad Tilt Wing UAV. The designed Quad Tilt Wing UAV is a configuration of a tandem wing type aircraft with an actuating motor and propeller mounted at each wing. Momentum theory is used to calculate the thrust, and nonlinear modeling is performed considering lift and drag generated by slip stream effect of propellers. Also, Force and moment variation at each tilting angle is considered. Static trim on longitudinal axis is analyzed via numerical simulation. Componentwise force contribution was analyzed at each trim mode. Dynamic characteristics were evaluated through eigenvalue analysis for a linear model at each flight mode. It is verified that longitudinal dynamic characteristics are changing from unstable to stable state by continuous transition of dominant poles.
Keywords
Quad Tilt Wing; Tilt Wing; Modeling; Static Trim; Dynamic characteristics;
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