| 1. | The test results show that the rotor induced flow changes the warship airwake and the influence of the rotor can be reduced by opening the hangar door
结果表明，旋翼诱导速度改变了舰船尾流分布，打开机库门可减弱旋翼的影响。 |
| 2. | All of these is the important base of the selecting of turbines , the designing of hydrodynamics performance , and the general designing of marine currents power plant
首先分析了竖轴可调角直叶水轮机水动力性能计算的基本公式，介绍了诱导速度的两类计算方法。 |
| 3. | In this thesis we have get the profile of the shroud , the shroud is simulated by circle source and sink series , and the propeller is simulated by a actuating disk
在计算螺旋桨与函道的相互影响时，只考虑螺旋桨在函道表面任一点上诱导速度的平均值，即轴对称。 |
| 4. | The aerodynamic interference between the shroud and the propeller is calculated by lifting line theory . its precise , proved by wind tunnel test here , satisfies the engineering demand
在计算螺旋桨的参数时，仍以有限叶数升力线模型进行处理，并用诱导因子法来计算桨叶尾涡系在升力线上产生的诱导速度。 |
| 5. | In the first part , the steady nonlinear vortex lattice method is adopted to calculate the hydrodynamic characteristics of open water ichthyoid rudder , and the induced velocity of ichthyoid rudder is calculated using panel method
本文理论计算部分，采用定常非线性涡格法计算鱼形舵的水动力性能，用面元方法计算舵流场的诱导速度。 |
| 6. | Cotyledon and hypocotyl ' s rate and quamity are the most among these explams , and callus can be obtained in 10 days by cotyledon and hypocotyl . reversely it is difficult to indue callus with root , and the callus from root is lnde and easy to become browning . the calius obtained from leaf grows very slow and does not become browning uniill in 2 or 3 months
银杏的不同器官和组织都能够诱导出愈伤组织来，其中，子叶和胚轴10d左右全部愈伤化，诱导速度和诱导率均最高，根则很难诱导，愈伤组织很少，褐化很快；叶片诱导的愈伤组织，生长慢，褐化也慢，在培养基上保持两三个月而不褐化；胚乳的诱导时间也较长，需要30d左右。 |
| 7. | The paper analyzes the characteristic of aerodynamics with structure of helicopter propeller blade , dissertrates vortex theory and the theory about gliding air field which produce the power of helicopter propeller blade . at the same time it also deduce the method of computing the induced velocity produced by helicopter propeller blade with vortex theory . at last , an influcence to the spreading of sound is discussed
并且将两种定位算法进行了比较，说明了优劣；结合直升机的结构分析了旋翼的空气动力特性，论述了直升机旋翼产生拉力的滑流理论和涡流理论，结合涡流理论论述了直升机旋翼流场诱导速度的计算方法，在此基础上分析了直升机旋翼流场对声音传播的影响。 |
| 8. | The principal contributions of this dissertation are : 1 . a high fidelity and real - time rotor wake inflow model was built up . based on peters - he finite states wake theory , a new influence coefficient matrix for high speed flight was derived , the modified wake model is better suitable for the flight state with a large wake skew angle
本模型以peters - he有限状态尾迹理论为基础，修正了大尾迹倾斜角时的诱导速度影响系数矩阵，并结合了王氏涡流理论，导出了旋翼诱导速度垂向分量和旋转分量的表达式，可计算平尾、尾桨和垂尾气动中心处诱导速度各分量。 |
| 9. | At first an analysis of the basic principles of the vertical - axis variable - pitch turbine is given including two methods to calculate the induced velocity . one is the three different streamtube - methods which are single - disk single - streamtube ( sdst ) , double - disk single - streamtube ( ddst ) and multi - streamtube ( mtt ) method based on the momentum theory , the other is the vortex method ( vtth ) based on the potential eddy theory
一是根据动量定理的流管模型得到的求解诱导速度的单盘面?单流管方法( sdst ) 、双盘面?单流管( ddst )方法、多流管( mtt )方法；二是根据势涡理论得到的求解诱导速度的的涡方法( vtth ) 。 |
