Дисертації з теми "PROPELLER SHAFTS"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-17 дисертацій для дослідження на тему "PROPELLER SHAFTS".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Durfy, Jennifer L. "Investigation of damping treatments for propeller shaft vibration." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0029/MQ65288.pdf.
Повний текст джерелаSuonperä, Nadja, and Annika Henrich. "Analysis of the propeller shaft program at Volvo Construction Equipment." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-14786.
Повний текст джерелаMoores, Corwyn E. W. "Shaft and blade load measurements on a highly skewed propeller model in ice." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ62405.pdf.
Повний текст джерелаФедосенко, М. М. "Технологічне підготовлення заготівельного виробництва вилок карданних валів". Thesis, Чернігів, 2021. http://ir.stu.cn.ua/123456789/25308.
Повний текст джерелаУ кваліфікаційній роботі магістра на основі сформульованих завдань здійснено технологічне підготовлення заготівельного виробництва вилок ковзання карданних валів. В конструкторському розділі запропоновано удосконалення конструкції попереднього штампа для створення сприятливих умов формування кованки. Запропоновано модернізацію ковочного пакету, що полягає в розміщенні поряд з ковочними штампами обрізного блоку. В технологічному розділі розроблено технологічний процес виготовлення нижньої вставки попереднього рівчака та технологічний процес виготовлення кованки вилки ковзання. В організаційному розділі проаналізовані організаційні аспекти технологічного підготовлення виробництва, здійснено організаційне проектування робочого місця коваля-штампувальника. В заключних розділах роботи наведено розрахунки техніко-економічної ефективності проектних розробок. Запропоновані інженерні рішення з питань охорони праці.
In the master's qualification work, on the basis of the formulated tasks, the technological preparation of procurement production of sliding forks of cardan shafts was carried out. In the design section, it is proposed to improve the design of the previous stamp to create favorable conditions for the formation of the forge. The modernization of the forging package is proposed, which consists in placing an edging block next to the forging stamps. In the technological section the technological process of manufacturing the lower insert of the previous stream and the technological process of manufacturing the fork of the sliding fork were developed. In the organizational section the organizational aspects of technological preparation of production are analyzed, the organizational design of the workplace of the blacksmith- puncher is carried out. The final sections of the work provide calculations of technical and economic efficiency of project development. Engineering solutions on safety were proposed.
Fredriksson, Robert, and Milovan Trkulja. "Fuel Efficiency in AWD-system." Thesis, Jönköping University, JTH, Mechanical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-1589.
Повний текст джерелаThis degree project has been made in cooperation with engineers working for GM Engineering/Saab Automobile AB in Trollhättan. The given name by Saab for the project is “Fuel efficiency improvements in All Wheel Drive(AWD)-system”. The main tasks of this thesis work were to investigate the size of the power losses in different parts on the propeller shaft, to design a computer program that calculates
coordinates and angles on a propeller shaft and to investigate the possibilities to put together a simplified formula that calculates the natural frequencies on a propeller shaft.
The main parts of this report are a compilation of the theory about AWD and mostly about the parts on the propeller shaft, and also a description of the developed computer program called Propeller Shaft Calculator. This report doesn’t concern power losses in the different joints because there were no such general equations to be found. The most common way to calculate the power losses inside a joint is to do tests were the power loss is measured at different angles, torque and speed and then use that data to put together an approximated equation.
Most of the work on this project has been on theory studies and on programming. The main result of the project is the program Propeller Shaft Calculator.
Propeller Shaft Calculator is a program that is designed in Microsoft Excel. All the menus are programmed in the visual basic editor in Excel. The program is supposed to be used as a help while designing new propeller shafts.
Propeller Shaft Calculator can calculate all the coordinates, lengths, angles and directions on a propeller shaft. It also calculates natural frequencies, plunge, estimated power loss on the second shaft and angles in the joints. In the program you can choose to do calculations on four different configurations of propeller shafts but can quite
easy upgrade the program with more choices.
Basically the program works like this:
First you choose the right propeller shaft in the main menu. Then you fill out the indata sheet with coordinates, lengths, material data and so on. As you type in the input data the output data will appear in the out-data sheet next to the in-data. Every propeller shaft has also a calculations sheet were more detailed calculations can be
found.
The program also has a built in help function and a warning function that lights a warning sign next to the values if they are outside the limits.
Natter, Bernard. "Etude de l'usure et de l'ecaillage de pieces d'un reacteur d'avion par la technique d'activation en couches superficielles." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13223.
Повний текст джерелаGUPTA, ABHIRAJ KUMAR. "OPTIMIZATION OF ROBO-MIG WELDING PARAMETERS FOR WELDING OF PROPELLER SHAFTS USING TAGUCHI DOE AND ANOVA." Thesis, 2023. http://dspace.dtu.ac.in:8080/jspui/handle/repository/20017.
Повний текст джерелаMeng-Che, Wu, and 吳孟哲. "The Dynamic Simulation and Analysis of the Propeller Shaft." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/15973965068195175986.
Повний текст джерела華梵大學
機電工程研究所
96
This essay is talking about the effects of each component exercising while simulating the equal speed of Rezppa Type universal joint used on the propeller shaft. The simulating method is to tear apart of the equal speed of Rezppa Type propeller shaft and use the Solid Words 3D drawing software to build the appearance. Then use CAE analysis software ADAMS to set up the parameter of each component and condition while exercising. Set up three different speed *1000rpm*, *2000rpm*, *3000rpm* to run the simulating with actual practicing.Through the simulation, we can understand the effects between Rezppa Type propeller shaft and steel ball while exercising.We can realize better the character of propeller shaft after the ADAMS simulation.
Liu, Chang, and 劉潛. "The Performance of The High-Speed Propeller at Inclined Shaft Condition." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/09817788887147949133.
Повний текст джерела國立海洋大學
造船工程學系
85
This paper is aimed to study the performance of the propeller under different cavitation numbers at inclined shaft condition, and to compare the performance between the New-Section propeller and the Newton-Rader propeller. In order to calculate the effective thrust and the real efficiency for the craft, the horizontal and vertical forces which are both created by the propeller at inclined shaft are measured. When the inclined shaft angle is 8 degrees and the advance coefficient is near the propeller design point, the measrued vertical force is about 40% ~ 50% of the shaft thrust. And, the efficiency of the propeller at 8-degree shaft inclination is significantly less than that of the propeller with horizontal shaft. The experiment also shows that the efficiency of the New-Section propeller is greater than that of the Newton-Rader propeller at inclined shaft condition regardless cavitation numbers. In addition, the "Unsteady Propeller Lifting-Surface Theory" is applied to calculate the vertical force produced by the propeller at inclined shaft condition. Due to the simple mathmatical model about wake in propeller theory, the computational results are much lower than the measured values.
Wu, Jung-Fu, and 吳榮福. "Torsional-and-lateral-coupled vibration analysis of a shaft carrying an eccentric propeller." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/59467433705040127728.
Повний текст джерела國立高雄海洋科技大學
輪機工程研究所
94
The object of this thesis is to study the vibration behaviour of the propulsive shafting system induced by a rotating marine propeller carrying single or multiple eccentric concentrated masses. To this end, the entire propulsive shafting system is firstly represented as a three-degree-of-freedom torsional-and-lateral-coupled vibration system. Then, the expressions for total kinetic energy and total potential energy of the entire propulsive shafting system are derived. Next, based on the theory of Lagrange’s equations, the equations of motion of the entire propulsive shafting system are derived and the mass matrix, damping matrix, stiffness matrix and external force vector of the entire vibrating system are determined. Finally, the forced vibration responses of the propulsion shafting system are obtained by solving the last equations of motion with Newmark direct integration method. Some factors closely relating to the current research topic, such as mass, total number and distribution of eccentric concentrated mass, etc, are investigated. From the numerical results, it is found that the influence of eccentric mass(es) of the propeller on the vibration characteristics of the propulsive shafting system is significant.
Chen, Shin-Zhou, and 陳信州. "The influence of propeller root geometries on cavitation pattern at inclined shaft condition." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/96301275270273425495.
Повний текст джерела國立臺灣海洋大學
系統工程暨造船學系
96
Due to the inclined shaft condition, the angle of attack of high-speed propeller will be increased significantly, especially at the root of the propeller, when its blade rotate to 90 degrees circumferentially. It will make root erosion easily. Countermeasures such as increasing and reducing the chordlength, adopting trailing edge truncation and cupping at propeller root, are investigated. The test condition is at inclined shaft 10°,cavitation numbers are 0.75 & 0.6 . The K-J chart will be measured and the cavitation pattern at propeller root will be photographed. From the results of the experiment, it is shown that chordlength reducing at propeller root make the cavitation easily to happen. At low cavitation number, the efficiency will be reduced remarkably. Cordlength increasing at propeller root, the cavitation would be improved at low cavitation number. Trailing edge truncation can control cavitation at propeller root efficiently. Cupping makes the cavitation stable from leading edge to trailing edge at root when the blade rotates to 90 degrees, and makes face cavitation when blade rotates to 270 degrees.
李瓊惠. "On the Efficiency Increase of Propeller at Inclined Shaft Condition by Using Asymmetric Stator." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/65182750072407903202.
Повний текст джерела國立海洋大學
造船工程研究所
87
The purpose of this thesis is to design an asymmetric stator fixed in front of the propeller at inclined shaft condition. This stator-propeller device is used to improve the propeller inflow, and therefore the loss of rotational kinetic energy of propeller and the vertical force produced by the propeller can be reduced to improve the efficiency of the propeller. Furthermore, this kind of design can also reduce the propeller cavitation. In this thesis, a lifting line program developed at NTOU (National Taiwan Ocean University) is first adopted for calculating the optimum circulation distribution of the asymmetric stator and the propeller, and MIT-PBD10 is then used to determine the detailed propeller geometry. Experiments of the designed stator-propeller model have been performed in the Medium Cavitation Tunnel at NTOU. The experimental results have been compared with those of the optimized single propeller with the new section geometry at the same design condition. The experimental results show that the efficiency of stator-propeller is 6.3%higher than that of propeller alone when operating at design condition. The efficiency of the stator-propeller is also improved by 6.3% when comparing to the optimized single propeller with new section geoetry. Notice that the torque and lifting force produced by asymmetric stator are about 58.2%,and 35% of the propeller, respectively, at the design condition, and the vertical force produced by propeller is about 18.3% of the propeller thrust which is one third smaller than that of single propeller.
Guo, Zhe-Rong, and 郭哲榮. "Root unloading on the performance improvement of high-speed propeller at inclined shaft conditions." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/16023025129119698842.
Повний текст джерела國立臺灣海洋大學
系統工程暨造船學系
92
The main objective of this thesis is to investigate the performance improvement of a root-unloading propeller operating at the inclined shaft condition. The high-speed propellers usually have a shaft inclination angle between 8 and 10 degrees, and this inclined shaft arrangement results in a non-uniform inflow to propellers. Previous testing data show that inclined shaft brings a negative influence to high pitch propellers, and strongly affects propeller loadings at inner radii. Therefore, a root unloading propeller, which has the reduced pitch and camber ratio at inner radii and the locally increased pitch at outer radii is tested in the NTOU medium cavitation tunnel at inclined shaft conditions. The experimental results are compared to the propeller having the same loading but without root unloading. It is found that unloading at propeller root can not only increase the efficiency remarkably at inclined shaft conditions, but also improve the root cavitation condition.
CHANG, YUAN_CHEN, and 張原禎. "The influence of blade number on the performance of cavitating propeller at inclined shaft condition." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/33039304122828750027.
Повний текст джерела國立海洋大學
造船工程學系
86
ABSTRACT This thesis is aimed at designing a propeller which is outstanding in performance, to serve as a parent model of a new series for high speed patrol boats. A new design procedure and philisophy is estabilished to design the so- called new-section propeller. It is different from the method used for conventional NACA a=0.8 section. For the propeller of high speed craft , the performance of the new-section prepeller is measured at different cavitation numbers at the inclined shaft condition, and compared with that of Newton- Rader propeller. The experimental results show that both the efficiency of the new-section propeller and the cavitation extension on blade are better than those of the Newton-Rader propeller at the inclined shaft condition regardless cavitation numbers. For propeller of container ship, one of the most important issues is the reduction of pressure fluctuation induced by a cavitating propeller. Similarly, a design procedure and philisophy which takes account of strength problem of blade due to high skew is estabilished to design new-section propellers. The results of experiment and calculation also show that both the cavitation volume and the pressure fluctuation on ship stern induced by new- section propeller are much lower than those of NACA propeller.
Lee, Wen-Chi, and 李文琪. "Radial Loading Distribution on the Performance of High-Speed Propellers at Inclined Shaft Conditions." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/30288637064274880474.
Повний текст джерелаChien, Cheng-Wei, and 簡政維. "The open water test of four blades End plate propeller with 0.95 EAR at inclined shaft conditions." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/869e39.
Повний текст джерела國立臺灣海洋大學
系統工程暨造船學系
102
According to the test results of ENDP406, we designed a new 4-blades propeller ENDP406A which pitch is changeable. This propeller has 0.95 EAR and the angle of the end-plate is equal to -1.0. The open water test of ENDP406A is carried out in NTOU MCT at different cavitation numbers and pitch ratios at inclined shaft 8o and 10o.It will be investigated if the blade face cavitation when blade rotating to 270 o and the endplate face cavitation when blade rotating to 180o can be eliminated after the modification on the angle of attack of endplate, and the camber and pitch distribution on propeller blade. The performances of pitch ratios 1.2 and 1.6 at different cavitation numbers for inclined shaft 8o and 10o are also observed. It is shown from the experimental results that the efficiency is improved when the pitch ratio is 1.4 at lower cavitation numbers. The cavitation phenomenon on pressure side have been controlled after the changes on camber and pitch ratio distributions. Because the pitch ratio 1.2 of ENDP406A is adjusted from 1.4, so that the pitch is too small near the tip. The efficiency is worse due to the sheet cavitation has been occurred on pressure side. However, the efficiency of pitch ratio 1.6 is good. When the propeller blade turns to 180o, the endplate cavitation on pressure side is disappeared for all pitch ratios. The experimental results can serve as a data base for design endplate propeller in future.
Tsai, Cheng-Han, and 蔡承翰. "The open water test of four blades End plate propeller with 0.8 EAR at inclined shaft conditions." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/74656491408548268958.
Повний текст джерела國立臺灣海洋大學
系統工程暨造船學系
103
According to the test results of ENDP401A, a new 4-blades propeller ENDP401B based on ship speed lower than 30 knots has been designed with two pitch ratio 1.3 and 1.1. This propeller has 0.8 EAR and has a 0.8 degree diffused angle for the end-plate. The open water test of ENDP401B is carried out in NTOU medium cavitation tunnel at different cavitation numbers and pitch ratios at inclined shaft 8 o and 10 o . The influence of the pitch and camber distribution near the propeller tip on the efficiency and cavitation will be investigated. It is shown from the experimental results that the cavitation phenomenon on the pressure side and back side near the tip have been controlled at the pitch ratio 1.3. However, there is still a slight face cavitation at the pitch ratio 1.1. It can be improved by increased the pitch ratio or reduced the camber ratio. When the propeller blade turns to 0o, the end-plate has sheet cavitation on suction side due to the small diffused angle of the end-plate. If we increase the diffused angle of the end-plate to 1.0 degree, the sheet cavitation will be improved.