displacement propeller

简明释义

排水航行推进器

英英释义

例句

1.Many large yachts use a displacement propeller for better fuel efficiency.

许多大型游艇使用位移螺旋桨以提高燃油效率。

2.The design of the displacement propeller allows for smoother sailing in rough waters.

这种位移螺旋桨的设计使得在波涛汹涌的水域中航行更加平稳。

3.When cruising at low speeds, a displacement propeller performs exceptionally well.

在低速巡航时，位移螺旋桨表现尤为出色。

4.Engineers recommend a displacement propeller for boats designed for long-distance travel.

工程师建议为设计用于长途旅行的船只使用位移螺旋桨。

5.The displacement propeller is ideal for vessels that require high stability.

对于需要高稳定性的船只，位移螺旋桨是理想的选择。

作文

In the world of marine engineering, understanding the various types of propulsion systems is crucial for designing efficient vessels. One such system is the displacement propeller, which plays a significant role in how boats and ships move through water. A displacement propeller is specifically designed to push a large volume of water behind it, allowing the vessel to glide smoothly without creating excessive turbulence. This type of propeller is commonly used in displacement hulls, where the shape and design of the hull allow the boat to displace water rather than ride on top of it.The efficiency of a displacement propeller lies in its ability to operate at lower speeds while still maintaining good thrust. Unlike planing hulls that require higher speeds to lift out of the water, displacement hulls and their corresponding propellers are optimized for cruising at slower velocities. This characteristic makes them ideal for long-distance travel, where fuel efficiency and stability are paramount.One of the key advantages of using a displacement propeller is its ability to provide a steady and controlled motion. This is particularly important for larger vessels that need to navigate through challenging waters or when docking. The propeller's design allows for a smooth flow of water, minimizing the risk of cavitation—a phenomenon that can lead to damage and decreased performance.Moreover, the displacement propeller is often paired with engines that operate at lower RPMs (revolutions per minute), which contributes to quieter operation. This is beneficial not only for the crew and passengers aboard but also for marine life, as reduced noise pollution helps maintain the natural ecosystem. Additionally, the lower speed operation means that wear and tear on the propeller and engine components is minimized, leading to lower maintenance costs over time.However, it is important to note that while the displacement propeller excels in certain conditions, it may not be suitable for all types of vessels. For example, racing yachts and high-speed ferries typically utilize different types of propellers that are designed for rapid acceleration and higher speeds. Therefore, choosing the right propeller type is essential for optimizing performance based on the intended use of the vessel.In conclusion, the displacement propeller is an integral component of marine propulsion systems, particularly for vessels designed for stability and efficiency at lower speeds. Its ability to displace water effectively allows for smoother navigation and reduced environmental impact. As technology continues to evolve, innovations in propeller design will likely enhance the capabilities of displacement propeller systems, making them even more efficient and environmentally friendly in the future. Understanding the mechanics and applications of this type of propeller is vital for anyone involved in marine engineering or boating, as it directly influences the performance and sustainability of maritime travel.

在海洋工程的世界中，理解各种类型的推进系统对于设计高效的船只至关重要。其中一种系统是displacement propeller，它在船只和舰艇如何在水中移动方面发挥着重要作用。displacement propeller专门设计用于将大量水推向后方，使船只能够平稳滑行，而不会产生过多的湍流。这种类型的螺旋桨通常用于排水船体，其中船体的形状和设计允许船只排开水，而不是在水面上滑行。displacement propeller的效率在于其能够以较低的速度运行，同时仍能保持良好的推力。与需要更高速度才能抬出水面的平面船体不同，排水船体及其对应的螺旋桨经过优化，适合以较慢的速度巡航。这一特性使它们非常适合长途旅行，在这种情况下，燃油效率和稳定性至关重要。使用displacement propeller的一个主要优点是它能够提供稳定和可控的运动。这对于需要在复杂水域中航行或停靠的大型船只尤为重要。螺旋桨的设计允许水流平稳，最大限度地减少气蚀风险——这是一种可能导致损坏和性能下降的现象。此外，displacement propeller通常与低转速（RPM）的发动机配合使用，这有助于降低噪音。这不仅对船员和乘客有利，而且对海洋生物也是如此，因为减少的噪音污染有助于维护自然生态系统。此外，低速操作意味着对螺旋桨和发动机部件的磨损和撕裂最小化，从而降低了长期维护成本。然而，重要的是要注意，虽然displacement propeller在某些条件下表现出色，但它可能不适合所有类型的船只。例如，竞赛游艇和高速渡轮通常使用不同类型的螺旋桨，这些螺旋桨被设计用于快速加速和更高的速度。因此，选择正确的螺旋桨类型对于根据船只的预期用途优化性能至关重要。总之，displacement propeller是海洋推进系统的重要组成部分，特别是对于设计用于低速时稳定性和效率的船只。它有效排开水的能力使得航行更加平稳，减少了对环境的影响。随着技术的不断发展，螺旋桨设计的创新可能会增强displacement propeller系统的能力，使其在未来更加高效和环保。理解这种类型的螺旋桨的机制和应用对于任何参与海洋工程或航海的人来说都是至关重要的，因为它直接影响到海事旅行的性能和可持续性。