Establishment of the Measurement System for the Total Performance of a Sailing Boat and Improvement of the Method for the Performance Prediction

作者建立了一套测量系统，可以同时采集全尺寸帆船的姿态和运动数据以及风浪数据。该系统在各种风浪条件下的航行巡洋舰海上试验中得到了证实，航速为10.6米。船的跟角和俯仰角都是用一个垂直陀螺仪测量的，该陀螺仪是由科学研究资助预算购买的。结果表明：1)将稳航状态下的实测数据与模型试验和数值分析相结合的速度预测程序（VPP）的计算结果进行了比较。通过比较，澄清了VPP的一些争议点，并对这些争议点进行了改进。用抛入式测波仪结合波浪测量测量了船的运动。采用谱分析方法对实测结果进行了分析，并与模型试验数据和数值计算结果进行了比较。分析结果表明，风帆巡洋舰在波浪中的运动具有明显的特点。3)研究了艇的转向和机动特性。所做的实验包括正常转向、Z向机动、俯仰和航迹测试。试验结果与数值模拟结果进行了比较。该比较为预测某型巡洋舰的机动特性和航向性能提供了重要信息。建立了包括动力特性在内的某型巡洋舰性能预测方法。研究结果可为研制高性能帆船和智能帆船操舵系统奠定基础。

The authors established a measurement system which collects the data of the attitude and movement of a full-scale sailing boat in conjunction with the data of wind and wave, simultaneously. This system was confirmed by the sea test of the sailing cruiser, 10.6m-LOA, under various wind and wave conditions. The both angles of heel and pitch of the boat were measured using a vertical gyro, which was purchased by the budget of the Grant-in-Aid for Scientific Research.The results obtained are as follows :1) The measured items at the steady sailing states were compared with the results of the velocity prediction program (VPP), which was calculated using the data of both model tests and numerical analysis. The comparison clarified some controversial points of the VPP, and then those points were improved.2) The movement of the boat was measured in conjunction with wave measurements using a throw-in type wave meter. The measured results were analyzed by means of spectral analysis, and the results were compared with both model test data and numerical calculations. The analyzed results indicated the distinctive feature of motion for the sailing cruiser in waves.3) The steering and maneuvering characteristics of the boat were also investigated. The performed experiments were normal steering, Z maneuver, luffing-up and tacking tests. The test results were compared with those of numerical simulations. The comparison provided important informations for the prediction of maneuvering characteristics and tacking performance of a sailing cruiser.The method of performance prediction for a sailing cruiser including dynamic characteristics was established by this study. These results can be used as a foundation for the research to develop high performance sailing cruiser and intelligent steering system for sailing.