nonuniform pitch propeller

简明释义

变距螺旋桨

英英释义

例句

1.Using a nonuniform pitch propeller 非均匀螺距螺旋桨 can significantly reduce cavitation in high-speed boats.

使用非均匀螺距螺旋桨可以显著减少高速船只的气蚀现象。

2.The design of the nonuniform pitch propeller 非均匀螺距螺旋桨 allows for improved efficiency at varying speeds.

这种设计的非均匀螺距螺旋桨在不同速度下能提高效率。

3.In marine applications, a nonuniform pitch propeller 非均匀螺距螺旋桨 can provide better thrust control.

在海洋应用中，非均匀螺距螺旋桨可以提供更好的推力控制。

4.The research team tested a nonuniform pitch propeller 非均匀螺距螺旋桨 to enhance the performance of their underwater drone.

研究小组测试了一种非均匀螺距螺旋桨以增强其水下无人机的性能。

5.The advantages of a nonuniform pitch propeller 非均匀螺距螺旋桨 include better fuel efficiency and reduced noise levels.

使用非均匀螺距螺旋桨的优点包括更好的燃油效率和降低噪音水平。

作文

The concept of a nonuniform pitch propeller is essential in the field of marine engineering and aerodynamics. A propeller is a device with blades that rotates and creates thrust, allowing vessels to move through water or aircraft to fly through the air. The term 'pitch' refers to the distance a propeller would move in one complete revolution if it were moving through a solid medium. In a nonuniform pitch propeller (非均匀螺旋桨), the pitch varies along the length of the blades. This variation can be designed to optimize performance under different operating conditions, such as speed and load. Traditional uniform pitch propellers have blades that are set at the same angle throughout their length, which means they produce a consistent thrust. However, this design can be limiting because it does not account for the varying flow conditions experienced by different sections of the blade during operation. For instance, the tip of a propeller blade experiences different fluid dynamics compared to the root due to the rotational speed and the effects of vortex formation. By employing a nonuniform pitch propeller, engineers can tailor the angle of each segment of the blade to improve efficiency. For example, the pitch may be increased towards the tip of the blade where the velocity is higher, allowing for better thrust generation without stalling. Conversely, a reduced pitch at the root can help ensure smoother operation at lower speeds. This adaptability makes nonuniform pitch propellers particularly advantageous in applications where vessels or aircraft experience a wide range of operating conditions.In addition to enhancing performance, nonuniform pitch propellers can also lead to reductions in fuel consumption and emissions. By optimizing the thrust produced at various speeds, these propellers allow for more efficient use of power, which is increasingly important in today’s environmentally-conscious world. Moreover, the ability to adjust the pitch dynamically can help in achieving better maneuverability, especially in complex operational scenarios such as docking or navigating through tight spaces.Another critical aspect of nonuniform pitch propellers is their contribution to noise reduction. Traditional propellers can generate significant noise due to cavitation and other factors, which is a concern in both marine and aviation contexts. By designing blades with nonuniform pitch, the flow over the blades can be managed more effectively, leading to reduced turbulence and, consequently, lower noise levels. This quality is particularly valuable for submarines and aircraft operating in sensitive environments where noise pollution can have detrimental effects.In conclusion, the nonuniform pitch propeller represents a significant advancement in propeller technology, offering numerous benefits in terms of efficiency, performance, and environmental impact. As the demand for better-performing and more sustainable propulsion systems continues to grow, the importance of understanding and utilizing nonuniform pitch propellers will only increase. Engineers and designers must continue to innovate in this area, exploring new materials and designs that can further enhance the capabilities of these advanced propellers. The future of aviation and marine transportation relies on such innovations, making the study of nonuniform pitch propellers not only relevant but crucial for the advancement of these industries.

非均匀螺旋桨的概念在海洋工程和空气动力学领域至关重要。螺旋桨是一种带有叶片的装置，旋转并产生推力，使船只能够在水中移动或飞机能够在空中飞行。术语“螺距”指的是螺旋桨在一次完整旋转中如果在固体介质中移动的距离。在非均匀螺旋桨（非均匀螺旋桨）中，螺距沿着叶片的长度变化。这种变化可以设计成在不同的操作条件下优化性能，例如速度和负载。传统的均匀螺旋桨具有在整个长度上设置相同角度的叶片，这意味着它们产生一致的推力。然而，这种设计可能会受到限制，因为它没有考虑到在操作过程中不同叶片部分所经历的流动条件。例如，螺旋桨叶片的尖端由于旋转速度和涡流形成的影响，经历的流体动力学与根部不同。通过使用非均匀螺旋桨，工程师可以调整叶片每个部分的角度以提高效率。例如，叶片尖端的螺距可能会增加，以便在速度较高时产生更好的推力而不发生失速。相反，在根部减少螺距可以帮助确保在较低速度下的平稳操作。这种适应性使得非均匀螺旋桨在船只或飞机经历广泛的操作条件的应用中尤为有利。除了提高性能外，非均匀螺旋桨还可以减少燃料消耗和排放。通过优化在各种速度下产生的推力，这些螺旋桨可以更有效地利用动力，而这一点在当今环保意识日益增强的世界中显得尤为重要。此外，动态调整螺距的能力可以在复杂的操作场景中实现更好的机动性，尤其是在停靠或穿越狭窄空间时。非均匀螺旋桨的另一个关键方面是它们对噪音减少的贡献。传统的螺旋桨由于气蚀等因素可能产生显著噪音，这在海洋和航空环境中都是一个关注的问题。通过设计具有非均匀螺距的叶片，可以更有效地管理叶片上的流动，从而减少湍流，并因此降低噪音水平。这一特性对于在敏感环境中运营的潜艇和飞机尤其有价值，因为噪音污染可能会造成不良影响。总之，非均匀螺旋桨代表了螺旋桨技术的重要进步，在效率、性能和环境影响方面提供了众多好处。随着对更高性能和更可持续推进系统的需求不断增长，理解和利用非均匀螺旋桨的重要性将与日俱增。工程师和设计师必须继续在这一领域进行创新，探索可以进一步提升这些先进螺旋桨能力的新材料和设计。航空和海洋运输的未来依赖于这样的创新，使得对非均匀螺旋桨的研究不仅相关，而且对这些行业的发展至关重要。