The Experimental Study on Inland Electric Propulsion Cruise Maneuverability Teng ZHAO, Rong ZHANG, Shi-yi ZHANG and Ke ZHAO

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1 2017 2nd International Conference on Applied Mechanics, Electronics and Mechatronics Engineering (AMEME 2017) ISBN: The Experimental Study on Inland Electric Propulsion Cruise Maneuverability Teng ZHAO, Rong ZHANG, Shi-yi ZHANG and Ke ZHAO School of Shipping and Naval Architecture, Chongqing Jiaotong University, Chongqing Keywords: Electric propulsion, All-direction propeller, Maneuverability, Trial test. Abstract. Through the Century myth of the electric propulsion ship trial experiment was carried out, respectively for the type of ship's turning performance, braking performance, and steady performance are analyzed in aspects of research, through comparing with other ways with traditional propulsion ship, according to the results above all aspects of performance is superior to the traditional ship propulsion mode. Excellent maneuverability and airworthiness, the ship for the research and development of green ships in inland water provides the research direction and development train of thought. At the same time, the type of ship's sea trial test for inland river ships new revision of the specification provides a reliable and objective data, the new specification and standard come on stage has played a great role in promoting. Introduction With the implementation of Chinese economic sustainable development strategy and the vigorous rise of inland shipping, inland waterways continue to high-speed, specialization, large-scale development, and green energy-saving ship will be the main direction of research and development of new inland ship. In the energy-saving emission reduction, noise reduction and rising calls for new norms and new standards for maritime continuous introduction of the moment, the electric propulsion system composed of the low-emission diesel generator has become a new trend of development of inland ships, to the Century myth as the representative of the sixth generation of Yangtze River Electricity to promote luxury cruise ships to create a precedent for China's river push the ship. In addition to the good environmental protection and superior comfort. The ship's reliability of handling performance has become the focus of attention for the first time using the full rotation rudder paddle. Maneuver Test of Electric Propulsion Cruise Ship According to the Technical Code for Inland Waterway Statutory Inspection (2011), Chapter 5, Chapter 9, Section 9.1.1, the shipping vessel shall be provided with a ship maneuverability performance manual during the operation. The main data contained in the manual shall be provided by the pilot test of the ship. The trial test is monitored by the water traffic management monitoring system. Electric Propulsion Luxury Cruise Ship Type and Main Parameters Century myth electric propulsion luxury cruise ship's main ship type parameters shown in Table 1, with its full swing propulsion device layout shown in Figure 1. Figure 1. Full rotation Rudder paddle one control device layout. 92

2 Table 1. The main ship type parameters of Century myth electric propulsion cruise ship. Cabinet minister 141.8m Length between perpendiculars 132.0m Molded breadth 19.0m Designed draft 2.90m Design speed 24km/h Number and number of main propulsion motors 4 Taiwan Rated power 680kW Rated speed 1000rpm Propeller type Rudder Propeller Rudder propeller diameter 1680mm Blade number of rudder blade 4 leaves Ship Turning Performance Test The ship rotation test was carried out by DGPS service system. The experimental waters were open water, and the water velocity was 1.2km/h. The ship in the engine speed 955r/min under steady speed sailing, respectively left and right-hand 90, when the ship turning to 360 at the end of the experiment. Record the ship's Slewing distance, longitudinal distance, tactical diameter and maximum heel angle. The test results shown in Table 2. Table 2. Rotation test results. Item Left full rudder turn Right full rudder turn Rotation before host speed (r/min) Rotate the rudder angle ( ο ) Initial speed (km/h) Initial heading ( ο ) Slewing distance (m) 0 0 Swing pitch (m) 0 0 Maximum heel angle ( ο ) 1 1 Steady rotation diameter(d.) (m) 0 0 Tactical rotation diameter(d T ) (m) 0 0 Ratio of gyration diameter to captain(d/l) 0 0 Ratio of tactical rotary diameter to master's (DT/L) limit ο 80 The time required for turning the following angles (S) 180 ο ο ο 219 Ship Braking Performance The brake test was also performed by the DGPS service system, which was the same as the rotating test. The test procedure was from Full speed car to Parking. The inertial test results are shown in Table 3. The inertial test trajectory is shown in Figure 2. Figure 2. Inertial test trajectory. 93

3 Ship Heading Stability Performance Table 3. Inertia test results. Item Full speed car - parking Host speed(r/min) Initial heading( o ) Initial speed(km/h) 24 End of heading( o ) End speed(km/h) 2.3 Test time(s) 594 Track distance(m) 1112 Ratio of track distance to captain 7.92 Test stroke(m) 1089 Track deviation(m) 143 The ship is sailing at a speed of 955r / min at the speed of the host, and the direct flight delay (keep the rudder angle unchanged) for 3 minutes and the direct steering (keep the course unchanged) test time 3 minutes. The results are shown in Table 4 and Figure 3. Table 4. Heading stability test results. Item Direct delay(keep the rudder Direct steering(keep the angle unchanged) course unchanged) Host speed(r/min) Initial heading( o ) Initial speed(km/h) End of heading( o ) End speed(km/h) Test time(s) Steering number(n) Steering frequency(c/m) Maximum steering angle( o ) Test stroke(m) Track deviation(m) 结束结束开始开始 Direct delay Figure 3. Heading stability test trajectory. Electric Propulsion Ship Maneuverability Test Analysis Analysis of Rotary Test Results Direct steering In the ship design, the various types of ships must have a certain rotation diameter requirements. Conventional propulsion of the ship, the minimum relative rotation diameter of ships with good turning is about 3, and the ship with poor turning is about 10. Most ships are within 5-7. From the results of the rotary test in Table 2, we can see that the vertical distance of the Century myth luxury cruise ship is 0, the slewing distance is 0, the steady rotation diameter, the tactile rotation diameter, the ratio of gyration diameter to captain are all 0, the parameters are in the traditional propulsion of the ship outside the range of parameters, the ship to achieve the pirouette, its control performance is better than other traditional ship propulsion mode. 94

4 Analysis of Ship Braking Performance Test Results Table 3 shows the inertial test results, Century myth luxury cruise ship on the basis of no reversing test. The time to test was significantly longer, but the track distance is slightly larger than the other ships, and the track offset is less than 13% of the navigation distance, the above data analysis shows that the Century myth luxury cruise wheel braking performance is better than other types of the ship. Analysis of Heading Stability Test Results In order to ensure the Century myth luxury cruise course stability in the tail of the ship's keel in the office with a stay of wood, from Table 4 of the heading stability test results can be seen, the Century myth is a luxury cruise ship heading stability test was carried out in full condition. Keep in constant rudder angle when the track offset is 23.5m, the test stroke 1030m, the track offset is 2.3% of the test stroke, keep track of offset in the same course of Stroke is 1085m, track deviation of the test stroke of 1.8%, illustrate the heading stability is better, basically stable in the original track at full speed. Conclusion Through the test of Century myth electric propulsion luxury cruise ship, the paper analyzes the turning performance, braking performance, and steady performance of the ship, and other ships with traditional propulsion methods for comparison, results show that the above properties are better than the traditional propulsion mode the ship. Therefore, the ship in addition to energy-saving environmental protection, vibration and noise reduction and other advantages, the ship has better maneuverability and airworthiness, which provides the research direction and development ideas for the research and development of inland water environmental protection ships. At the same time, the trial test of the ship also provides a reliable objective data for the revision of the new specification for inland waterways, and has played a great role in promoting the introduction of new norms and standards. Acknowledgement This research was financially supported by: (1) The Science and Technology Project Affiliated to the Education Department of Chongqing Municipality. KJ (2) National Engineering Research Center for Inland Waterway Regulation and Key laboratory of ministry of education for water conservancy projects open fund: SLK2016B05. (3) Chongqing Engineering Research Center for Special Ship Digital Design and Manufacturing open fund: References [1] Duan Xuxu, Coordination among Vessel, Engine and Propeller of Electrical Propulsion S hip and Economic Analysis [D]. Dalian: Maritime Affairs University of Dalian, 2008:P3-5. [2] Zou Zaojian, The ship maneuverability research progress [A]. Plenary meeting of Acade mic Committee of the sixth session of the mechanics of ship, Zhenjiang, 2006:P [3] Xu Mingcai, Simulation Research of numerical control surface ship [D]. Harbin: Harbin Engineering University, 2011:P

5 [4] SHAN Tiebing, Four propeller twin rudder ship propeller under different conditions and characterization of ship longitudinal launching gymnastics power [D]. Harbin: Harbin Engine ering University, 2011:P1-2. [5] Aoki I, Kijima K, et al. On the prediction method for manoeuvring of a full scale ship [J]. Jour of the Soc. of Naval Architects of Japan, 2006, (3):P [6] FAN Sheming. A comment on the calculation methods of ship maneuvering in waves [J].The mechanics of ship. 2000, 4(1):P15. [7] LI Dianpu. The ship motion and modeling [M]. Beijing: National Defence Industry Pres s, 2008: [8] XIAO Zhongming. Modeling and Simulation of Ship Manoeuvring Motion in waves [D]. DAlian: Dalian Maritime University, 2007:P

Simulation Analysis on Navigation Indexes of Wanzhou Yangtze River Highway Bridge after the Anti-Collision Device Construction by Ship Model Test

Engineering, 216, 8, 86-814 http://www.scirp.org/journal/eng ISSN Online: 1947-394X ISSN Print: 1947-3931 Simulation Analysis on Navigation Indexes of Wanzhou Yangtze River Highway Bridge after the Anti-Collision