| 1. | Some problems of model test methods for podded propulsor
吊舱式推进器模型试验方法中的一些问题 |
| 2. | The undulatory biomimetic propulsor is a new underwater propulsor which emulates the swimming mode of gymnarchus niloticus
摘要波动仿生推进器是以“尼罗河魔鬼”为仿生对象设计的新型水下推进装置。 |
| 3. | This thesis presents a design of the tester of the undulatorybiomimetic propulsor and givesan implementation of its control system
论文介绍了波动仿生推进器试验装置并具体实现了柔性长鳍的波动控制系统。 |
| 4. | The downhole hydrodynamic propulsor has yet to be improved since it has some limitations in operation
但在井型的适应范围和小曲率造斜井的施工等方面，推进器的使用还存在一定的局限性，有待进一步完善和发展。 |
| 5. | The undulatory control of the flexible fin is one of thekey techniques for the research of the undulatory biomimetic propulsor , and it is the base ofpropulsion
柔性长鳍的波动控制技术是波动仿生推进器研究的关键技术之一,它是实现柔性长鳍波动推进的基础。 |
| 6. | The undulatory biomimetic propulsor is a new - style underwater propulsor which is basedontheswimmingmodeofgymnarchusniloticus . itachievesitsforwardorbackwardmovementby undulatory controlof the flexible fin
波动仿生推进器是一种模仿“尼罗河魔鬼”的游动方式设计的新型水下推进装置。 |
| 7. | Field operation shows that , by using the hydrodynamic propulsor , not only the penetration rate is increased , the vibration of the bit and drill stem is reduced as well , thereby the service life of the bit is extended
1995 - 1998年井下液力推进器在大港油田等地区不同区块20余口井上施工的实践证明，使用这种推进器不但可以提高机械钻速，而且减轻了钻头和钻杆的振动，进而延长了钻头寿命。 |
| 8. | The forth and the fifth section present a practically real - time maneuvering control strategy with a mcu ( 68hc908mr8 ) for the robotic fish that uses the two - link oscillating foil as a propulsor . one robotic fish ( oucefish - i ) is designed and accomplished
第四和第五部分利用mcu ( 68hc908mr8 )实现了对以上模型运动轨迹的实时操作控制，设计完成机器鱼模型( oucefish - ) ，使机器鱼能利用两关节摆动薄片作为推进器游动。 |
| 9. | The hydrodynamic propulsor takes drill fluid as power source , with the aid of the axial load produced by the pressure drop of the bit nozzle , makes the axial force act on the bit to produce wob , making up for the insufficient wob , ensuring the bit feeding smoothly and improving the penetration rate
这种推进器以钻井液为动力源，借助钻头喷嘴压降产生的轴向载荷，使轴向力直接作用于钻头产生钻压，弥补有效钻压不足，保证钻头平稳钻进，提高机械钻速。 |
| 10. | The sixth section gives the experimental results in the quasi - steady flow around the caudal fin and mimic the forward swimming using the caudal fin as the propulsor . and then review the speed and track of the robotic fish swimming when locomotion parameters are set in the experiment condition
第六部分通过机器鱼的自主游动实验，初步模拟了机器鱼利用尾鳍摆动推进前进，考察了实验条件下设定鱼的尾鳍摆动相关参数的情况下鱼的游动速度和尾鳍的摆动轨迹情况。 |
