1·The general failure of podded propulsor is put forwarded. As an example, AZIPOD shaft seal arrangement and oil system are analyzed.
讲述了吊舱式推进器的易发故障，并以AZIPOD吊舱式推进器为例，对轴承和密封系统的原理和功能特性进行了分析。
2·Two methods for determining the critical length of the drill tool section below the hydrodynamic propulsor are presented.
给出了确定井下液力推进器以下钻具临界长度的两种方法。