Using the model the unsteady aerodynamics of one aircraft in pitching-rolling motion is identified.
应用该模型对某飞机模型做俯仰滚转耦合运动的非定常气动力进行了辨识。
The results show that unsteady aerodynamic characteristics of a delta wing oscillating in large amplitude pitching roll motion are more complicated than in pitching motion or in roll motion.
结果表明,飞行器俯仰滚转耦合运动时的气动特性比单独俯仰和滚转时的气动特性复杂得多。
At the Chicago White Sox U.S.Cellular Field on Chicago's South Side, the 30-year-old pitcher retired all 27 batters from the Tampa Bay Devil Rays without allowing anyone to reach first base, pitching a perfect game and putting his name in a record book occupied by only 17 others in Major League history.
VOA: standard.2009.07.24
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