With new systems, both companies will take the "razor and blade" model, where the system is sold at a slight loss and the profits come from selling the software. 因为这两家公司都采用的是“赔钱卖剃须刀,赚钱卖刀片”的模式,也就是说,游戏机稍微赔点钱卖出去,而利润主要来自卖软件的钱。
A rotor system with flexible damped support has been investigated experimentally under the conditions of simulated blade loss. 本文对带弹性阻尼支承的转子系统由于丢失叶片产生的瞬态响应给出了系统的实验研究结果。
It is shown that the interval rows of holes on the blade surface may be the best way to reduce the flow loss. 为了降低冷气掺混的流动损失,基于数值实验的结果,本文首次引入了叶片表面气膜孔沿径向交错排列结构。
Finally, an important combination parameter was put forward to reflect the overall influence of blade loading and tip clearance distribution on the tip leakage mixing loss. 最后提出一个重要的组合参数,反映了叶片尖部载荷和叶尖间隙的流向分布对叶尖泄漏掺混损失的综合影响。
The results show that the inter-stage matching of both the stages is quite inappropriate, and the large reaction at the blade root of last stage results in a high shock wave loss. 计算结果表明,动静叶间的级间配合不尽合理,且末级根部反动度偏大,引起了较大的激波损失。
Partially broken blade loss could also exist, but this kind of accident is less critical at most of time, which usually can not break the casing nor trigger any secondary damage. 而部分叶片断裂丢失的影响较小,一般不会击穿机匣,也难以引发二次损伤。
Then the Outside Diameter of the blade is again measured very exactly, to determine Diameter Loss. 再次精确测量刀片的外径长度,以测定外径的降低。
The secondary vortices and the corner separation between the end-wall and suction surface of the blade make the stream surfaces warped and twisted rather obviously. A loss core is mainly attributed to the formation of corner separation. 叶栅二次涡和端壁吸力面角区分离引起流面翘曲和扭转,角区分离形成损失核心。
This blade can be used to produce counter pressure gradient at cascade passage end, reduce secondary flow loss, increase the efficiency of IP casing consequently, and improve the heat rate of units. 应用该叶片能使叶栅通道端部产生逆压力梯度,减少二次流损失,提高中压缸的流动效率,降低整机热耗。
Through a detailed measurement of the aerodynamic parameters of three low aspect ratio turbine cascades and wall surface ( including upper and lower end wall as well as blade surface) flow display the authors have studied the mechanism of energy loss reduction for curved blades. 通过三类低展弦比涡轮叶栅气动参数的详细测量与壁面(包括上、下端壁与叶片表面)流动显示,研究了叶片弯曲降低能量损失的机理。
Effects of Non-smooth Blade on the Cascade Exit Loss Coefficients 非光滑叶片对叶栅出口能量损失系数的影响
Effects of blade negative bowing on secondary flow, total pressure loss and outlet flow angle were analyzed quantitatively, mechanism of the effects was discussed as well. 定量地分析了叶片反弯曲对叶栅出口二次流、总压损失和气流角的影响,并探讨了叶片反弯曲作用的机理。
Study and Utilization of Train-Borne Power Station Turbine Blade Loss Technicality of Auxiliary Power Unit Using Micro& gas Turbine Engine for Power 涡轮叶栅损失模型研究及其在列车电站燃气轮机透平中的应用小型燃气轮机为动力的辅机电站技术
It is shown that this numerical method can make quite precise prediction of turbine blade profile loss. 算例表明本文的数值方法可准确地预测涡轮叶栅的叶型损失。
Influence of blade stacking line on loss in diffused meridional passage 子午扩张流道中叶片积叠线形式对损失的影响
The effects of suction surface fences at different blade height on the cascade loss and secondary flow in compressor cascade were investigated through the detailed cascade exit flow field survey in low speed wind tunnel. 在低速风洞上通过详细测量叶栅的出口流场,研究了叶片吸力面上不同高度处加翼刀对压气机叶栅损失和二次流的影响。
A math model for the blade profile design of working disk of torque converter is presented on the basis of reducing impact loss and friction loss, increment of boundary length and secondary flow loss. 本文以减小工作轮中的冲击损失,摩擦损失、边界长增长及二次流损失为依据,提出了液力变矩器工作轮叶片形状设计的数学模型。
The test results show that, for this static cascade, using the aft-loaded profile and curved blade can not only reduce the profile loss, but also weaken the secondary flow. 实验结果表明采用后部加载叶型和弯叶片设计可以有效地减少叶型损失和二次流损失;
The blade geometry character was also analyzed by studying the pressure distribution along profile 、 limit streamline and loss coefficient distribution in cascade flow field. 从型面压力分布、极限流线、以及能量损失系数等分析了地面压气机的叶型与叶片的设计特点。
On the improvement of the rotor blade loss model of axial flow fan and compressor including the effect of rotation and its application 计及旋转影响的轴流风机和压气机动叶栅损失模型之改进及其应用
Failure Analysis of Turbine Blade Shroud Loss for an Aeroengine 某型发动机新件涡轮叶片叶冠掉块故障分析
A Calculating Method for Rotary Blade Loss of Axial Fan 轴流通风机动叶损失的一种计算方法
In accordance to analysis of interaction mechanism between the ejection and the main flow, a 2-D compressible model of the turbine blade trailing edge ejection has been improved, which uses energy loss coefficient for representing the effect of the ejection on the aerodynamics of the main flow. 本文分析了叶片尾缘喷气与主流干扰的机理,改进了二维、可压缩的涡轮叶栅尾缘喷气模型,并以能量损失系数ξF来反映冷气喷射对主流的气动影响。
Compared with conventional blade, the passage vortex structure is more stable in cascade with aft-loaded blade which secondary loss is small. 与常规叶片相比,二次流损失较小的后部加载叮型所构成的叶栅内的通道涡在结构上较为稳定。
The experimental investigation of using negative curved blade for reducing secondary loss in compressor cascade 反弯曲扩压时栅降低二次流损失的实验研究
Finally, the total loss distribution along the blade span of the axial flow compressor is estimated according to an improved end wall loss model and a shock loss model. 再应用改进了的端壁损失和激波损失模型,最终算出轴流压气机设计点损失沿叶高的分布规律。
Through the analyses, we can see that the adoption of bowed blade can decrease the loss effectively. 通过分析可以看出,采用弯叶片积叠,能够有效降低损失。
It is proved that the profile loss can be decreased with the use of advanced blade through the comparison of loss coefficient of blade surface overall pressure. 通过叶片表面总压损失系数,证实了先进叶型在流动中可以降低叶型损失。
Numerous studies have shown that, the energy loss by blade tip leakage occupies a pivotal position in total loss. 诸多研究表明,叶顶泄漏流动所造成的能量损失在压气机总损失中占举足轻重的分量。