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@font-face { font-family: "Times New Roman"; }@font-face { font-family: "宋体"; }p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: "Times New Roman"; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }鸭式布局指的是水平前翼在机翼之前的一种气动布局形式，通常把水平前翼称之为鸭翼。

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@font-face { font-family: "Times New Roman"; }@font-face { font-family: "宋体"; }p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: "Times New Roman"; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }研究飞机的飞行性能时，通常将飞机看作是一个质点系；要研究飞机的动态飞行品质，就必须研究飞机作为一个质点的运动学方程和动力学方程。

@font-face { font-family: "Times New Roman"; }@font-face { font-family: "宋体"; }p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: "Times New Roman"; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }飞机的纵向力矩主要指的是飞机左、右两个半翼的升力差对飞机机体纵轴产生的力矩。

@font-face { font-family: "Times New Roman"; }@font-face { font-family: "宋体"; }p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: "Times New Roman"; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }气动力产生的力矩主要有零升力矩、稳定力矩、阻尼力矩和操纵力矩四种。

@font-face { font-family: "Times New Roman"; }@font-face { font-family: "宋体"; }p.MsoNormal { margin: 0pt 0pt 0.0001pt; text-align: justify; font-family: "Times New Roman"; font-size: 10.5pt; }span.msoIns { text-decoration: underline; color: blue; }span.msoDel { text-decoration: line-through; color: red; }div.Section0 { }方向舵主要用于操纵飞机上升和下滑。