propulsor

简明释义

英[prəˈpʌlsə(r)]美[prəˈpʌlsər]

n. 推进物；推进器

英英释义

单词用法

同义词

反义词

例句

1.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。

2.Although the resistance of pod plays a negative role, considering the various merits of podded propulsors, it can be expected that this new type of propulsor will be widely develop...

但若计及吊舱阻力则吊舱推进装置的系统效率有所下降。可以预见，吊舱式推进装置因其众多的优越性而具有广阔的发展前景。

3.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。

4.Although the resistance of pod plays a negative role, considering the various merits of podded propulsors, it can be expected that this new type of propulsor will be widely develop...

但若计及吊舱阻力则吊舱推进装置的系统效率有所下降。可以预见，吊舱式推进装置因其众多的优越性而具有广阔的发展前景。

5.The rocket's propulsor is designed to generate maximum thrust during launch.

火箭的推进器旨在发射时产生最大推力。

6.In marine engineering, a propulsor is used to move ships through water.

在海洋工程中，推进器用于推动船只在水中移动。

7.A malfunctioning propulsor can lead to decreased performance in aircraft.

故障的推进器会导致飞机性能下降。

8.The new electric propulsor technology promises to reduce fuel consumption significantly.

新的电动推进器技术承诺显著减少燃料消耗。

9.Researchers are developing a hybrid propulsor that combines gas and electric power.

研究人员正在开发一种混合推进器，结合气体和电力。

作文

In the realm of engineering and technology, the term propulsor refers to a device that generates thrust to propel an object forward. This concept is fundamental in various fields, particularly in aerospace and marine engineering. Understanding how a propulsor functions can provide insights into the design and operation of vehicles such as airplanes, rockets, and boats. The efficiency and effectiveness of a propulsor can significantly impact the performance of these vehicles, making it a crucial area of study for engineers and designers.One of the most common types of propulsors is the jet engine, which utilizes the principle of jet propulsion. In this system, air is drawn into the engine, compressed, mixed with fuel, and ignited. The resulting high-pressure exhaust gases are expelled at high velocity, generating thrust that propels the aircraft forward. The efficiency of a jet engine's propulsor is measured by its thrust-to-weight ratio, which indicates how much thrust is produced relative to the engine's weight. A higher ratio means better performance, allowing the aircraft to achieve greater speeds and altitudes.In marine applications, propulsors take on different forms, such as propellers and water jets. A traditional propeller works by rotating blades that create a pressure difference between the front and back of the blades, pushing the water backward and moving the vessel forward. Water jets, on the other hand, suck in water and expel it at high speed, providing thrust. The choice of propulsor in marine vessels depends on various factors, including the type of water body, desired speed, and maneuverability requirements.The advancements in technology have led to the development of innovative propulsors, such as electric and hybrid propulsion systems. These systems aim to reduce environmental impact while maintaining performance. Electric propulsors use batteries or fuel cells to power engines, offering a cleaner alternative to traditional fossil fuel-based systems. Hybrid systems combine conventional engines with electric propulsion, providing flexibility and efficiency. The growing emphasis on sustainability in transportation is driving research into these new types of propulsors, highlighting the importance of innovation in this field.Moreover, the study of propulsors extends beyond just their mechanical aspects. It also encompasses fluid dynamics, aerodynamics, and thermodynamics. Engineers must consider how air and water flow around and through propulsors to optimize their designs. Computational fluid dynamics (CFD) simulations are often employed to analyze the performance of propulsors under various conditions, allowing for more accurate predictions of their behavior in real-world scenarios.In conclusion, the concept of a propulsor is integral to the fields of aerospace and marine engineering. Whether it is a jet engine soaring through the skies or a propeller navigating the waters, understanding how propulsors work is essential for advancing transportation technologies. As we move towards more sustainable and efficient modes of transport, the role of propulsors will continue to evolve, making it a fascinating area for future exploration and innovation.

在工程和技术领域中，术语propulsor指的是一种产生推力以推动物体向前的装置。这个概念在各个领域都是基础，特别是在航空航天和海洋工程中。理解propulsor的功能可以提供对飞机、火箭和船只设计和操作的洞察。propulsor的效率和有效性可以显著影响这些车辆的性能，使其成为工程师和设计师研究的关键领域。最常见的propulsor类型之一是喷气发动机，它利用喷气推进的原理。在这个系统中，空气被吸入发动机，压缩，与燃料混合并点燃。产生的高压废气以高速度排出，产生推力，使飞机向前推进。喷气发动机的propulsor效率通过推重比来衡量，这表明产生的推力与发动机重量的比率。比率越高，性能越好，使飞机能够达到更大的速度和高度。在海洋应用中，propulsors呈现不同的形式，例如螺旋桨和水喷射器。传统螺旋桨通过旋转叶片创造前后叶片之间的压力差，将水向后推，从而推动船只向前移动。另一方面，水喷射器则吸入水并以高速排出，提供推力。在海洋船只中选择propulsor取决于多种因素，包括水体类型、所需速度和机动性要求。技术的进步导致了创新propulsors的发展，例如电动和混合动力推进系统。这些系统旨在减少环境影响，同时保持性能。电动propulsors使用电池或燃料电池为发动机供电，提供比传统化石燃料系统更清洁的替代方案。混合动力系统将传统发动机与电动推进相结合，提供灵活性和效率。对可持续交通日益重视正在推动对这些新型propulsors的研究，突显了这一领域创新的重要性。此外，propulsors的研究不仅限于其机械方面。它还包括流体动力学、空气动力学和热力学。工程师必须考虑空气和水如何在propulsors周围和通过它们流动，以优化其设计。计算流体动力学（CFD）模拟通常用于分析propulsors在各种条件下的性能，从而更准确地预测其在现实世界场景中的行为。总之，propulsor的概念在航空航天和海洋工程领域中至关重要。无论是翱翔在天空中的喷气发动机，还是在水中航行的螺旋桨，理解propulsors的工作原理对于推动交通技术的进步至关重要。随着我们朝着更可持续和高效的交通方式迈进，propulsors的角色将继续演变，使其成为未来探索和创新的迷人领域。