船的纵摇

Calculation of pitch ing and heaving of a catamaran;3. The experimental methods and process are introduced in this paper for a catamaran rolling and pitch ing in regular waves, as well as the determination of some parameters of motion.

介绍双体船在规则波中的横摇和纵摇运动的试验方法和试验过程及运动参数的确定，主要研究了有无舭龙骨和重心高度变化对船舶运动性能的影响，并根据试验结果计算了在不规则波中的摇摆运动性能。

A new rule -Rule of Left Multiplication is presented in the process of modeling by the method of the coordinate transformation .

本文通过严密地推导，首次建立了包含艏摇的完整的三自由度船摇自稳定模型，弥补了现有资料只针对横摇和纵摇建模的不足。

The strip method often used in engineering will be used to predict the pitch ^ heave and acceleration of ship.

本文利用工程中常用的切片法来预报船的纵摇、升沉、以及船的某些部位的垂向加速度。

The method used to build the mathematic platform for elimnating the influence of the vertical and horizontal swaying angles of the ship and the correction method of the fire angle mainly presented in this paper.

分析了船在航行中的几种摇荡对火炮射击精度的影响，主要介绍了用于消除船体纵摇角和横摇角影响的数学平台的建立方法，以及射击角的修正。

The results of the investigation provide a better understanding of the effects of side hull transverse position and bilge keels fitted on each side hull on trimaran roll motion , and some seakeeping characteristics are concluded .

迎浪航行是船舶航行时经常选取的航态，在这种航态下影响船舶作业的主要因素是船的纵摇，垂荡，垂向加速度，甲板上浪及砰击等，且这些方面难以通过减摇措施得到改善，因此这些要素是评价船舶运动性能的重要条件。

Besides, seakeeping motions in regular waves are calculated by nonlinear strip theory, and that in short-crested irregular waves are evaluated by applying the principle of linear superposition. Evaluated seakeeping motions then added into the simulated maneuvering motions in short-crested irregular waves.

耐航运动部分则是在前述操船引致的纵移、横移、平摆及横摇运动之外，利用非线性截片理论，计算在规则波中的运动反应函数，并依据线性叠加原理，计算其在短峰不规则波浪中的船体运动量，予以附加，以达成在短峰不规则波中的操纵运动模拟计算功能。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。