A single tilt-wing UAV has a new-concept hybrid configuration for adopting the advantages of both fixed-wing and rotary-wing aircraft. This paper presents a dynamic modeling and analysis of the single tilt-wing UAV which is composed of a tilted main wing, a fuselage, a tail wing, and a variable pitch propeller. The main wing can be divided into tilted and fixed section. The tilted section is located at outer wing and has an electric propulsive system at each side. The variable pitch system is used for improving control performance during vertical flight. The dynamic modeling is derived by forces and moments analysis of the UAV. Momentum theory and blade element theory are used for thrust term, and a wetted and an unwetted area are considered for the precise main wing model. The force and moment variation is considered for tilting angle change from 0 to 90 degrees: cruise to hover mode. Also, trim conditions are analyzed for each flight mode, and flight dynamic characteristics are presented through open-loop pole location with respect to trim conditions.

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In this study, the current conditions of the farming and fishing village housing improvement projects that were promoted for the last five years were examined, the results of the survey conducted among the promoters of the farming and fishing village housing improvement projects with regard to their level of satisfaction were analyzed, and the outcomes of the housing improvement projects and the improvement needs were derived for utilization as basic data for preparing an improvement plan for "the farming and fishing village housing improvement projects."Below are the results of this study and the proposals based on such. In view of the reality that the recipients of the farming and fishing village housing improvement projects are limited to the rural residents who are able to repay their loans, ways of actualizing the current loan limit of 60 million won should be prepared, taking into account the actual construction cost. Moreover, as the rural residents do not live on monthly salaries, the repayment periods of their loans should be adjusted to make them payable on a quarterly or a semi-annual basis, reflecting the reality of the farming villages, where loan repayment is based on the residents' yearly income. Further, policies guaranteeing the residential rights of those belonging to the low-income bracket who are unable to repay their loans must be established at the soonest possible time.