propeller machinery

简明释义

推进设备

英英释义

例句

1.Proper lubrication is essential for the longevity of propeller machinery.

适当的润滑对推进器机械的耐久性至关重要。

2.During the training, we learned about the different types of propeller machinery used in marine vessels.

在培训中，我们了解了海洋船只中使用的不同类型的推进器机械。

3.The maintenance team inspected the propeller machinery to ensure it was functioning properly.

维修团队检查了推进器机械以确保其正常运作。

4.The propeller machinery on the ship was upgraded to improve its speed and maneuverability.

船上的推进器机械进行了升级，以提高其速度和机动性。

5.The engineer designed a more efficient model of propeller machinery to reduce fuel consumption.

工程师设计了一种更高效的推进器机械模型，以减少燃料消耗。

作文

In the world of engineering and transportation, the term propeller machinery refers to a crucial component that plays a significant role in various modes of transport, particularly in aviation and marine applications. The fundamental purpose of propeller machinery is to convert rotational motion into thrust, allowing vehicles such as airplanes and boats to move efficiently through air and water. Understanding the mechanics behind propeller machinery can provide insights into its importance and applications.To begin with, let’s explore how propeller machinery operates. A propeller typically consists of blades that are angled to create lift when they rotate. In aviation, for example, the engine generates power that spins the propeller, which then pushes air backward. According to Newton’s third law of motion, for every action, there is an equal and opposite reaction. Therefore, as the propeller pushes air backwards, the airplane is propelled forward. This principle is not only vital for airplanes but also for ships and submarines, where propeller machinery works similarly by pushing water backward to achieve forward motion.The design of propeller machinery is also critical for efficiency and performance. Engineers must consider various factors, including blade shape, material, and size. For instance, a larger propeller can move more water or air, but it may also require more power to turn. Conversely, a smaller propeller might be less efficient at high speeds. This delicate balance between size and efficiency is why advanced computational models and wind tunnel testing are often employed during the design process of propeller machinery. These methods help in optimizing the performance of the propellers, ensuring that they provide the necessary thrust while minimizing drag.Moreover, propeller machinery has evolved significantly over the years. Historically, wooden propellers were common, but advancements in materials science have led to the use of lightweight composites and metals that enhance durability and performance. Additionally, innovations such as variable pitch propellers allow for adjustments in blade angle during flight or navigation, providing greater control and efficiency. This evolution showcases how propeller machinery continues to adapt to the demands of modern transportation, pushing the boundaries of speed and efficiency.In conclusion, the significance of propeller machinery cannot be overstated. It is a fundamental technology that has transformed the way we travel, whether by air or sea. Understanding how propeller machinery works, its design considerations, and its historical developments provides a deeper appreciation for the engineering marvels that enable us to traverse vast distances. As technology progresses, we can expect further innovations in propeller machinery, leading to even more efficient and powerful modes of transportation in the future.

在工程和交通的世界中，术语推进器机械指的是一个关键组件，它在各种交通方式中发挥着重要作用，尤其是在航空和海洋应用中。推进器机械的基本目的是将旋转运动转换为推力，使飞机和船只等交通工具能够高效地在空气和水中移动。理解推进器机械背后的机制可以提供对其重要性和应用的深入见解。首先，让我们探讨一下推进器机械的工作原理。推进器通常由倾斜的叶片组成，这些叶片在旋转时产生升力。例如，在航空领域，发动机产生动力使推进器旋转，然后向后推动空气。根据牛顿的第三运动定律，每个动作都有一个相等且相反的反应。因此，当推进器向后推动空气时，飞机便向前推进。这一原理不仅对飞机至关重要，对船只和潜艇来说，推进器机械的工作方式也是类似的，通过向后推动水来实现向前运动。推进器机械的设计对于效率和性能也至关重要。工程师必须考虑多个因素，包括叶片形状、材料和大小。例如，更大的推进器可以移动更多的水或空气，但它可能需要更多的动力来转动。相反，较小的推进器在高速下可能效率较低。这种尺寸与效率之间的微妙平衡是为什么在推进器机械的设计过程中，通常会采用先进的计算模型和风洞测试。这些方法有助于优化推进器的性能，确保它们提供必要的推力，同时最小化阻力。此外，推进器机械多年来也发生了显著的演变。历史上，木质推进器是常见的，但材料科学的进步导致使用轻质复合材料和金属，增强了耐用性和性能。此外，可变螺距推进器等创新允许在飞行或导航过程中调整叶片角度，从而提供更大的控制和效率。这一演变展示了推进器机械如何继续适应现代交通的需求，推动速度和效率的边界。总之，推进器机械的重要性不容低估。它是一项基础技术，改变了我们旅行的方式，无论是空中还是海上。理解推进器机械的工作原理、设计考虑因素及其历史发展，可以更深刻地欣赏使我们能够跨越广阔距离的工程奇迹。随着技术的进步，我们可以期待在推进器机械方面有更多的创新，未来将出现更高效、更强大的交通方式。