pump jet

简明释义

喷水式推进器

英英释义

例句

1.The pump jet is less prone to cavitation compared to traditional propellers.

与传统螺旋桨相比，泵喷射不易发生气蚀。

2.Engineers are developing a new pump jet that can operate efficiently in icy conditions.

工程师们正在开发一种新的泵喷射，可以在冰冷条件下高效运行。

3.Many modern submarines utilize a pump jet to reduce noise during operation.

许多现代潜艇利用泵喷射在操作过程中减少噪音。

4.The new boat design features a powerful pump jet system for improved maneuverability.

新船设计采用强大的泵喷射系统，以提高机动性。

5.The pump jet technology allows for higher speeds in shallow waters.

这项泵喷射技术允许在浅水中实现更高的速度。

作文

In the realm of modern engineering and propulsion systems, the term pump jet refers to a specific type of water jet propulsion system that utilizes a pump to move water through a nozzle, creating thrust. This technology has gained popularity in various applications, particularly in marine vessels and some aircraft. Understanding the mechanics and advantages of a pump jet can provide insights into its significance in contemporary design and functionality.The basic principle behind a pump jet is relatively straightforward. It consists of an impeller or centrifugal pump that draws water from the surrounding environment and accelerates it through a nozzle. This process generates a high-speed jet of water that propels the vessel forward. One of the most notable features of a pump jet is its ability to operate efficiently in shallow waters, making it ideal for boats that navigate in coastal areas or rivers where traditional propellers may encounter obstacles or hazards.One of the main advantages of using a pump jet system is its reduced risk of cavitation. Cavitation occurs when the pressure of the water drops below its vapor pressure, causing the formation of bubbles that can damage propellers and reduce efficiency. Since a pump jet is designed to maintain a consistent flow and pressure, it minimizes the likelihood of cavitation, leading to improved performance and longevity of the system.Furthermore, a pump jet provides enhanced maneuverability compared to conventional propulsion methods. The design allows for better control of the water flow, enabling vessels to execute sharp turns and navigate through tight spaces with ease. This characteristic is particularly beneficial for military applications, where stealth and agility are paramount. Many naval vessels utilize pump jets to enhance their operational capabilities, allowing them to remain undetected while maintaining high speeds.In addition to marine applications, the concept of a pump jet has also found its way into aviation. Some experimental aircraft designs have incorporated this technology to achieve efficient thrust while reducing noise levels. The use of a pump jet in aircraft can lead to quieter operations, which is increasingly important in urban environments where noise pollution is a growing concern.Despite its numerous advantages, the pump jet system is not without its challenges. The complexity of the design can lead to higher manufacturing and maintenance costs compared to traditional propulsion systems. Additionally, the efficiency of a pump jet can be affected by the quality of the water it operates in; debris and sediment can impact performance and require regular cleaning and maintenance.In conclusion, the pump jet is a remarkable innovation in the field of propulsion technology. Its ability to provide efficient thrust in shallow waters, reduce the risk of cavitation, and enhance maneuverability makes it an attractive option for both marine and aviation applications. As engineers continue to refine and improve upon this technology, we can expect to see even more widespread adoption and advancements in the future. The versatility and effectiveness of the pump jet highlight the ongoing evolution of propulsion systems in response to the ever-changing demands of transportation and exploration.

在现代工程和推进系统的领域中，术语pump jet指的是一种特定类型的水喷射推进系统，该系统利用泵将水通过喷嘴移动，从而产生推力。这项技术在各种应用中越来越受欢迎，尤其是在海洋船舶和一些飞机中。理解pump jet的机制和优势可以提供对其在当代设计和功能中重要性的深入了解。pump jet的基本原理相对简单。它由一个叶轮或离心泵组成，能够从周围环境中抽取水，并通过喷嘴加速水流。这一过程产生了高速的水流，推动船只向前移动。pump jet最显著的特点之一是其在浅水中高效运作的能力，使其成为在沿海地区或河流中航行的船只的理想选择，因为传统的螺旋桨可能会遇到障碍或危险。使用pump jet系统的主要优势之一是降低了气蚀的风险。气蚀发生在水的压力降到其蒸汽压力以下时，导致气泡的形成，这会损坏螺旋桨并降低效率。由于pump jet旨在保持一致的流动和压力，因此它最小化了气蚀发生的可能性，从而提高了性能和系统的使用寿命。此外，与传统推进方法相比，pump jet提供了更好的机动性。这种设计允许更好地控制水流，使船只能够轻松执行急转弯和在狭小空间中航行。这一特性对于军事应用尤为重要，因为隐蔽性和灵活性至关重要。许多海军舰艇利用pump jets来增强其作战能力，使它们在保持高速的同时保持隐蔽。除了海洋应用外，pump jet的概念也进入了航空领域。一些实验性飞机设计已经采用了这一技术，以实现高效的推力，同时降低噪音水平。在飞机中使用pump jet可以实现更安静的操作，这在城市环境中日益重要，因为噪音污染问题日益严重。尽管有众多优点，pump jet系统并非没有挑战。设计的复杂性可能导致与传统推进系统相比更高的制造和维护成本。此外，pump jet的效率可能会受到其操作水质的影响；杂物和沉积物可能会影响性能，并需要定期清洁和维护。总之，pump jet是推进技术领域的一项显著创新。它在浅水中提供高效推力、降低气蚀风险和增强机动性的能力，使其成为海洋和航空应用的一个有吸引力的选择。随着工程师不断完善和改进这一技术，我们可以期待在未来看到更广泛的应用和进步。pump jet的多功能性和有效性突显了推进系统在应对交通和探索不断变化的需求中的持续演变。