등가정하중을 이용한 접합날개의 구조최적설계

Abstract

The joined-wing is an airplane wing of a new concept. Its range and loiter are longer than those of a conventional wing. The joined-wing it can lead to increased aerodynamic performance, and structural weight saving. In this research, dynamic response optimization of a joined-wing is carried out by using the equivalent static loads. Equivalent static loads are made to generate the same displacement field as the one from dynamic loads at each time step of dynamic analysis. The gust loads are considered as critical loading conditions and they dynamically act on the structure of an aircraft. However, it is difficult to identify exact gust load profile. Therefore, approximated dynamic loads are generated. Static response optimization is performed for one case. One uses the same design variable definition as dynamic response optimization. The results are compared.