摘要：To aim at design requirements of high lift-to-drag ratio as well as high volumetric efficiency of next generation hypersonic airplanes,a body-wing-blending configuration with double flanking air inlets layout is ***,a novel forebody design methodology which by rotating and assembling two waverider-based surfaces is firstly introduced in this *** typical configurations are designed and their aerodynamic performances are evaluated by computational fluid *** results for forebodies analysis show that large volumetric efficiency,high lift-to-drag ratio,and uniformly distributed flowfield at the inlet cross section can be assured ***,results of numerical simulation of four integrated configurations with various leading edge shapes,including three power-law curves and a cosine curve clearly show the advantage of high lift-to-drag ***,the high pressure generated by the side wall of the airframe can be partly captured by the reasonably designed wings in the condition of small flight attack *** the order of lift-to-drag ratio of four configurations at 0 degree flight attack angle is completely different from the condition of 4-degree flight attack *** result demonstrates that the curve shape of the leading edge is very important for the lift-to-drag ratio of the aircraft,and it should be further optimized under the cruising attack angle in future work.

摘要：针对舰载机的抗侧风着舰控制问题,设计一种低通非奇异终端滑模引导算法(LNTSMC)用于提高舰载机的抗侧风引导能力.首先,基于H∞混合灵敏度控制设计内环姿态鲁棒控制系统,并推导舰载机着舰飞行时的侧向引导方程;然后,基于齐次性理论设计一种积分非奇异终端滑模面,使其在满足低通滑模控制器设计要求的同时避免控制奇异现象;进一步,设计一种带边界层的幂指数趋近律来抑制滑模控制中的抖振情况,并引入非齐次干扰观测器来改善边界层内部的鲁棒稳定性;最后,通过Lyapunov定理证明所设计算法的有限时间稳定性,并给出仿真结果.仿真结果表明,所设计的引导算法具有良好的抗侧风性能,通过与已有算法进行对比,验证了所提出算法的优越性.

摘要：高压捕获翼构型是一种合理利用机体/上置翼(简称捕获翼)间的耦合关系提高飞行器升力,进而大幅提高升阻比的高速飞行器新概念构型.基于其设计原理,捕获翼的位置与机体压缩激波和自身二次压缩激波的位置均直接相关,一般难以利用理论方法直接获得.针对这一问题,本文运用均匀实验设计方法在设计空间内获取样本点并利用计算流体力学分析和迭代获得其设计位置,之后通过构造代理模型建立捕获翼位置与设计参数间的模拟映射关系,进而发展了一种捕获翼位置设计的有效方法.在方法研究基础上以锥体-捕获翼组合构型作为实例对其进行验证.结果表明,该方法可在较大设计空间范围内准确判定捕获翼的设计位置.此外,针对这一构型还开展了基于代理模型的设计参数单因素分析.发现在设计空间内,前缘压缩角、来流马赫数、和捕获翼钝化半径等3个关键参数均与捕获翼位置呈单调正比例关系.

摘要：1草堂与玉山名胜草堂,是中国古代文人对于宅邸的自谦说法,比如唐代诗人杜甫的浣花草堂、白居易的庐山草堂,元代画家王蒙的东山草堂、文学家顾瑛的玉山草堂,清代纪晓岚的阅微草堂等."草堂"两个字表达了文人雅士淡泊金钱名利、以陋室为居、归隐田园、潜心研习文学或艺术的生活态度,也是基于我国自然朴素的农耕文明产生的一种文化现象.

摘要：为进一步适应高超声速飞行器的动力需求,根据现有燃气轮机循环特性,通过降低涡轮发动机压气机中的气流温度,提升发动机总体性能以适应更高的飞行速度。本文基于两相流动模型,根据进气道总压恢复系数,计算经验公式,求得高马赫数下压气机进口条件,通过模化理论对高空条件下的喷水冷却湿压缩过程进行了数值分析,探索了两相流动对压气机的内部流场及其性能的影响。研究表明:对于同一燃气轮机,通过喷水冷却,可以有效控制压气机压缩过程的温度升高,在25km高空以3.5Mach飞行时温度下降最高可达100K。喷水会改变压气机内部流场。对比发现,喷水后压气机动叶内的激波后移,激波后动叶叶背分离加大,同时由于离心力作用水滴集中在叶尖处,这引起了更大径向分布不均匀性。模拟结果表明,越小的喷雾直径,其湿压缩效果更好。

摘要：凉山对我们来说是个遥远的地方．却又常常听说航天城——西昌这个熟悉的名字。05年秋天．来自凉山州的领导们向我们自豪地讲起那个遥远而神奇的地方．发出热情而执着的邀请：来西昌吧!为凉山设计!

摘要：The optimization of 2D expansion lines and key parameters of three-dimensional configurations was carried out under simulated conditions of Mach 6.5 and a flight altitude of 25 km for an integrated configuration of the afterbody/nozzle of a hypersonic ***,the cubic B-spline method was applied to parameterize the expansion lines of the upper expansion *** optimization procedure was established based on computational fluid dynamics and the sequential quadratic programming *** local mesh reconstruction technique was applied to improve computational efficiency.A three-dimensional integrated configuration afterbody/nozzle was designed based on the two-dimensional optimized expansion *** influence rules incorporated certain key design parameters affecting the lift and thrust performance of the configuration,such as the ratio of the lengths of the lower expansion ramp to the afterbody (l/L),the dip angle of the lower expansion ramp ω,and the ratio of exit height to the length of afterbody (H/L).Under these conditions,we found that the integrated configuration has optimal performance when l/L=1/6,H/L=0.35 and =10°.We also showed that the presence of a side-board promotes lift and thrust performance,and effectively prevents the leakage of high pressure gas.

摘要：面对我国城乡建设关键转型期的新变化,提出城市设计应该有不同的维度、不同的层级和不同的视角。结合近年来的一些研究和设计项目,从关注城市总体格局特色、从点到面的城市织补、从基础和细节做起的城市品质提升、城市密度的深度研究、城市生态化公园化发展方向等5个方面分别进行了阐释。

摘要：600年前,明成祖朱棣在这里开山劈石,为先父树碑颂德。据说因为太重,难以搬动,巨大的“阳山碑材”如今仍静静地躺在山坡上,任风吹雨打。100年前,民国政府在这里开矿烧水泥,为孙中山修陵,为民国建都,以至百年来的建设需要,挖走了约1300多万方矿石,巨大的矿坑和赤裸的崖壁如今仍依在山腰上,看四季变幻。50年前,“昆元”“银佳”两座水泥厂落户在此,伴随着一袋袋水泥的运出,烟囱和车间中飘出的粉尘漫天飘洒,让青翠的山野蒙上了灰灰的面纱。

摘要：我写这篇短文首先是要对中国城市规划设计研究院表示敬意!在李晓江院长的带领下，～大批规划精英战斗在抗震救灾的第一线．一干就是好几年，从北川新县城到玉树，再转战舟曲，为灾区的重建付出了辛勤的劳动，值得钦佩!其次是相对北川新县城规划的模式表示赞同!规划师们不仅深入现场认真调研，也不仅画了精美的蓝图，