General aviation covers crop dusters , corporate jets , single - engine training aircraft and cargo aircraft , among other things 通用航空包括农用飞机，公司专机，单发动机教练机，以及运输机等飞行物。
Information about light and training aircraft , helicopters , gliders , spare parts and components , radio - communication equipment 将提供关于轻型飞机,教练机,直升飞机,滑翔机,飞机零配件及无线电通讯设备等信息
I hope that the paf is ready to induct the type quickly . i wonder when the two - seater trainer version will be ready . it would be needed to facilitate training 我希望paf能尽快做好开工生产的准备。我想知道双座的教练机何时可用。这是非常需要的。
" hawk ftc - 2000 " of china airlines and " qianjiao9 " plane model of guizhou avialtion industry group made samples in our factory on october 2003 . this plane takes flight test successfully in the plateau of yunnan - guizhou on december 13 2003年10月中航贵航集团"山鹰号高级教练机ftc - 2000歼教九飞机模型在本厂打样，该机型12月13日在云贵高原试飞成功
" hawk ftc - 2000 " of china airlines and " qianjiao9 " plane model of guizhou avialtion industry group made samples in our factory on october 2003 . this plane takes flight test successfully in the plateau of yunnan - guizhou on december 13 2003年10月中航贵航集团"山鹰号高级教练机（ ftc - 2000 ）歼教九飞机模型在本厂打样，该机型12月13日在云贵高原试飞成功；
Compared with a delta wing aircraft , the double - delta wing configuration has better aerodynamic performance at high angles of attack . an operational analysis was introduced as a method for evaluating training effectiveness of trainer aircraft . approaches to the engineering estimation of aerodynamic characteristics for aircraft with a double - delta wing configuration were studied , and the procedures for determining aircraft performance indices formulated . taking training effectiveness as the objective function and geometric parameters of the wing platform as design variables , through a numerical multivariate optimization arithmetic , the conceptual design optimization for a certain fighter trainer aircraft with double - delta wing configuration was carried out under the constraints of tactical and technical requirements and interrelated geometry . agreement of a calculation example with engineering practice indicates that the optimal design has higher training effectiveness than the baseline design , and in addition , improves the structural force - bearing conditions 双三角翼气动布局比三角翼飞机具有更好的大攻角空气动力特性.引入了评估教练机训练效能的作战分析法,研究了双三角机翼布局飞机空气动力特性的工程计算途径以及飞机性能指标的确定方法.以训练效能作为目标函数并选取机翼平面形状的几何参数为设计变量,采用多变量数值寻优方法,在战术技术指标及相关几何约束条件下,对某高级教练机的双三角机翼气动布局方案进行了优化选择.算例表明最优方案不仅比原准方案具有更高的训练效能,还改善了结构的受力情况,与工程实践吻合
In the french air force , mirage 2000 fighters in operation are : mirage 2000c / b single seater and two seater for air defence ; mirage 2000n , two seater , designed for all weather nuclear penetration at low altitude and very high speed ; and mirage 2000d , which is an upgraded version of the mirage 2000n , for automated bombing using conventional and laser guided munitions ; e type for multi purpose exporting version ; r for single seat day / night eaporting version 在法国空军内，现役的幻影2000战斗机为幻影2000c型单座战斗机、 b型双座战斗教练机、幻影2000n双座全天候低空高速核攻击机以及其改进型d型常规精确制导武器攻击机、幻影2000e多任务出口型、幻影2000r单座昼夜侦察出口型。
