上飞机

The aerodynamics characteristic of the innovative control surfaces which are implemented on the flying wing aircraft with large aspect ratio were introduced, and elevon and split rudder were involved. And the control effects on three axis were analyzed basing on computetional fluid dynamics method. The concept of control volume was imported to introduce parameters-based method of control surfaces design. The control effect requirements of the control surfaces were also evaluated. The original design of certain aircraft's control surfaces was modified.

介绍了在该新布局飞机上采用的升降副翼和开裂式方向舵等新型操纵面的气动特点，并在计算空气动力学的基础上分析了其三轴控制效率，引进舵容量的概念提出了操纵面的参数化设计方法，基于飞机的可控性对各新型操纵面的操纵效率需求进行了评估，最终对某型飞机的操纵面初步设计进行了修正。

The main jobs of this paper are as followed: 1 The reuse of the frame design technology for aircraft assembly fixtures is researched. a frame line part library is built with the templet driven technology, the reuse of the frame line part come true by the tools for instantiation and instance modification. The design resources are effectively used, some repeating work is cut. 2 Two methods to obtain the assembly feature are proposed: the straight way by the Enumeration method and the indirect way by project features to the assembly plane. All of the assembly features of the frame and the adjustable bearings are obtained by these two methods which makes the frame automatic assembly technology for aircraft assembly fixtures come true. 3 The frame automatic assembly technology aircraft assembly fixtures based on assembly features is researched. A binary tree assembly model is used to express the assembly information of the frame for aircraft assembly fixtures, the automatic assembly between the frame, the aircraft and the adjustable bearing is completed within the three steps: distribute, obtain and evaluate assembly feature. Finally, the efficiency of the frame assembly design is proved. 4The frame interpart modeling technology for aircraft assembly fixtures is researched, the intersection methods are concluded and the arithmetic of the single-cut, double-cut and inter-cut intersection is proposed, the interpart fast modeling of the frame design for aircraft assembly fixture come true. 5Based on the researches mentioned before, a sub-system of frame fast design for aircraft assembly fixture is developed on CATIA. The sub-system is used to design the aircraft assembly fixtures in a large aeronautics corporation and make a good- effect.

论文的主要工作如下： 1研究了飞机装配型架骨架设计重用技术，在总结归纳骨架线框结构类型的基础上，应用模板驱动的方法建立了骨架线框库，通过骨架线框零件的实例化和离线编辑实现骨架线框的重用，有效利用设计资源，减少重复劳动； 2提出穷举几何对象的装配特征直接获取方法，遍历零件模型的几何对象，从中捕捉所需装配特征，该方法简捷、高效；提出向装配面投影的装配特征间接获取方法，该方法在现有特征基础上生成装配特征，解决了部分装配特征难以直接获取的问题； 3研究了基于装配特征的飞机装配型架骨架自动装配技术，采用一种二叉树装配模型表达骨架的装配关系，并通过装配特征的分配、获取和赋值三个步骤，实现了骨架分别与飞机产品和可调支承的自动装配，避免了繁琐的人工交互操作，提高了骨架设计的效率和规范化程度； 4研究了飞机装配型架骨架零件间建模技术，在总结归纳骨架元件相贯处理方式的基础上，提出了骨架元件单剪切相贯、双剪切相贯和互剪切相贯的实现算法，简化了骨架相贯处理的过程； 5基于以上研究，在CATIA平台上开发了飞机装配型架骨架快速设计子系统，并应用于某大型航空企业的装配型架设计，提高了设计效率和设计质量。

The stealth warplane for the microwave radar usually have complicated structures with the coating of wave absorption. On the base of calculation and modeling of the geometrical structure of the warplane in real size, the HF RCS of the air crafts under two different polarizations in different direction have been calculated with the FDTD. The result shows that the above mentioned stealth warplane have the obvious characterstics of frequency resonance, polarization and the relatively large RCS in HF Band 10-30dBm2, which can be used as the theoretical reference for selection of working frequency for sky wave OTH Radar and it also means that the sky wave OTH radar has good capability of anti-stealth targets quantitatively.

对微波雷达具有隐身作用的飞机，其形体较为复杂且表面涂敷有强吸波材料在对一种具有隐身几何外形结构实际尺寸飞机进行计算建模的基础上，文中采用FDTD技术得到了两种极化状态下该飞机无涂敷时不同方向上的短波雷达截面RCS值其结果显示了这种隐身几何外形飞机在短波波段有明显的频率谐振特性、极化特性和较大的RCS10-30dBm2，可为天波超视距雷达在选择工作频率时提供理论参考，并定量地说明天波超视距雷达具有较优的反隐身目标能力

Suit". Three weeks later, Reard, a mechanical engineer, had another skywriting planewrite "Bikini - smaller than the smallest bathing suit in the world.The thong, which is a further development along the trend of reducing the amount of

他雇了一架在空中放烟写字的飞机为他的设计打广告，飞机在空中写到"Atome——世界上最小的泳装"。3周后，机械工程师里尔德也用飞机在空中写道，"比基尼——比世界上最小的泳衣还要小"。

While there are fewer sitting passengers than total passengers{ if the flight attendant is ready to let a passenger p through if there is nobody standing in the doorway to the entrance add p to the set B of passengers on the plane else add p to the set W of passengers that are waiting endif endif for all passengers p in set B if p is standing in the same row as the seat he has been assigned if P has luggage a nonzero luggage timer put luggage away, decrementing his luggage timer.

当总乘客中几乎没有就坐的乘客时{如果飞机乘务员准备让一乘客P通行如果无人站在入口等待将P加到飞机的B设置中否则将P加到飞机的W等待设置上 endif endif 对所有B设置的的乘客P 如果P已分配的座位位于同一列如果P有行李非0行李记时取走行李，耗用其行李记时否则就坐，离开过道 endif 否则如果P站在他座位边的过道上如果P前有人 P不动否则 P移至过道的某个位置 endif 否则P向前移至另一排，试图移至其座位的那一排 endif endfor endwhile

I can't get on the airplane because the air staffs said my bag is so stuffed.

机场工作人员说我的包太鼓了，不能上飞机。

Auntie , I won't see you off tomorrow.We'll meet in Chungking next month

伯母，我明天不送你上飞机了，下个月在重庆见面。

In fact, my little 3 year old son, Saxon, who accompanied me to Beijing, actually cried when we were leaving China, saying that he wanted to stay!

此次中国之旅，有趣的是，我3岁大的孩子， Saxon，在上飞机的时候，哭着说他要留在北京。

"As long as Matsuyama Hangzhou to a half-hour, on a plane to eat breakfast, read the newspaper reports to."

&杭州到松山只要1个半小时，上飞机吃个早餐、看份报就到了。&

I received a fantastic engagement ring for my fiance, and can only thank you for getting it to me four hours before I got on a plane to Marrakech to propose !

我接到离奇接触响我未婚夫、谢谢你，只能获得四个小时前我向我搭上飞机到马拉喀什建议！

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。