1) extremely low aspect ratio
极低展弦比
1.
The three-dimensional steady viscous flow field of an stator cascade with extremely low aspect ratio in ultra-micro gas turbine was obtained by numerically solving the 3D Navier-Stokes equations with time averaged Reynolds stress model under cylindrical system,combined with RNG k-ε turbulent model and non equilibrium wall function.
通过数值求解柱坐标系下三维定常粘性雷诺时均N-S方程,结合RNGk-ε湍流模型和非平衡壁面函数,获得了超微涡轮中极低展弦比静叶栅流道内部的三维稳态粘性流场,揭示了其独特的流场物理特性和气动损失规律。
2) low aspect ratio
低展弦比
1.
Three groups of turbine rectangular cascades with a low aspect ratio and gasflow different turning angles were tested in a low speed wind -tunnel.
低展弦比透平叶片弯曲方法研究王仲奇，韩万今，徐文远（哈尔滨工业大学哈尔滨１５０００１）关键词：低展弦比，透平叶片，弯曲方法。
2.
The aerodynamic characteristics and secondary flow vortices development of a steam turbine low aspect ratio endwall contouring nozzle cascade are investigated by CFD commercial software Numeca;the effects of tip endwall contouring are evaluated in comparison with the plain endwall nozzle under same boundary conditions.
采用数值计算软件Numeca模拟了汽轮机低展弦比端壁收缩喷嘴中气动性能和二次流涡系的发展,并与相同边界条件下的平直端壁喷嘴比较,得到了端壁收缩对流场性能的影响。
3) high aspect ratio
大展弦比
1.
The finite element analysis in buckling and postbuckling is required adopted because of the high aspect ratio wing structures stability problem.
大展弦比复合材料机翼结构的稳定性问题突出,需对结构进行屈曲和后屈曲分析。
2.
Based on the structural characteristics of high aspect ratio wing, the sandwich, multi-spar structure and an innovative mixed structure are designed and compared.
针对大展弦比机翼结构的特点,选定蜂窝夹层、多墙式和一种新型混合式结构进行分析比较。
3.
In order to study the optimal layout about fuselage and wing based on wing bending stiffness on bi-fuselage aircraft with high aspect ratio straight wing, the authors utilized the engineering beam to model this physical problem and gave the numerical solution through the optimization tool box of MATLAB 6.
为了探讨双机身大展弦比直机翼无人机中基于翼面弯曲刚度下机身与机翼的最佳布置问题, 本文采用工程梁对这一问题进行建模, 并利用MATLAB6。
4) low aspect-ratio
小展弦比
1.
The longitudinal and lateral-directional stability of the low aspect-ratio flying wing in several typical conditions was researched, including static stability and dynamic stability.
针对小展弦比飞翼布局飞机,分别研究其在几种典型飞行状态下的纵向和横航向的静、动稳定特性,通过与常规布局飞机进行对比,着重揭示了飞翼构型参数、飞行状态与其稳定性间的量化规律,并详细分析了这一布局纵向短周期模态及横航向荷兰滚模态发散的具体成因。
2.
A certain flying wing configuration combat aircraft with low aspect-ratio is chosen as an example.
以某小展弦比飞翼布局作战飞机为例,利用风洞试验结果研究了几种典型新型操纵面的操纵新机理及不同飞行条件下的操纵效能等。
3.
The directional axis flying qualities of low aspect-ratio combat flying wings were assessed in accor-dance with MIL—STD—1797A,and the evaluation results indicate the following aspects.
依据MIL—STD—1797A飞行品质规范,对小展弦比飞翼布局作战飞机的偏航轴飞行品质进行了评定研究。
5) high-aspect-ratio
大展弦比
1.
Based on wing structural design,composite plies design,computation of the wing aerodynamic andthe wing structural finite element analysis by loading aerodynamic pressure on the wing structure using the aerodynamic-structure load transfer between CFX and ANSYS,a high-aspect-ratio composite wing assembled on the UAV for high-altitude and long cruise time is designed.
研究沿着机翼气动性能计算、复合材料机翼构形设计、复合材料部件铺层设计、CFD/CSM载荷传递、机翼结构力学性能计算的设计分析流程,完成了一个大展弦比全复合材料机翼的设计过程。
6) aspect ratio
展弦比
1.
Influence of aspect ratio on flow field performance of linear bowed stator in compressor at low speed;
低速条件下展弦比对弯叶片扩压静叶栅流场性能的影响
2.
Calculation of pressure distributions of low aspect ratio missile wings at supersonic speeds and high angles of attack;
超声速大迎角条件下小展弦比弹翼压力分布计算研究
3.
The aerodynamic characteristics of the cuted tip rhombus wing and double-delta wing of middling sweepback angle and aspect ratio about sixty type are investigated by a numerical method based on Eular equations.
采用Euler数值计算方法,对60多种中等后掠角及展弦比的切尖菱形机翼、双三角机翼纵向气动力特性进行了计算、分析和比较,从中筛选出16种切尖菱形机翼、14种双三角机翼进行了全机高速风洞实验研究,给出了机翼的展弦比、前缘后掠角、根梢比(后缘前掠角)及几何扭转变化对全机升力、阻力及俯仰力矩的影响曲线和数据分析,在此基础上提出了用于定量估算两类机翼纵向气动力特性的关系式及修正因子。
补充资料：齐展展
1.整整齐齐。
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