propeller

简明释义

英[prəˈpelə(r)]美[prəˈpelər]

n. （飞机或轮船的）螺旋桨，推进器

复 数 p r o p e l l e r s

英英释义

单词用法

同义词

反义词

例句

1.The rope fouled the propeller.

绳索缠住了螺旋桨。

2.The plane will carry four 100 kilogram lithium batteries each powering a propeller engine.

太阳动力号“装有4快重大100公斤的锂电池，每块电池为一个螺旋桨助推器提供动力。

3.Add a propeller and a tail fin and it looks exactly like a little plane.

装上螺旋桨和尾翼之后，看起来极像小飞机。

4.When a plane's propeller, for example, spins through a cloud, the propeller exerts a rearward force.

比如，当飞机的螺旋桨疾驰过云层时，会给云一个向后的作用力。

5.Some gliders can launch themselves with a retractable propeller turned by a small combustion engine.

有些滑翔机可以靠着由小型内燃机驱动的可伸缩螺旋桨来起飞。

6.In Berlin, Germany, the Propeller Island City Lodge is a go-to place for travellers who enjoy whimsical decor.

德国柏林的螺旋桨岛城市别墅的房间装饰非常异想天开，是游客们趋之若鹜的地方。

7.The Sikorsky X2 has a pusher propeller mounted at the rear to obtain its high forward speed.

美国西科斯基公司的X2拥有一部安装在后方的推进螺旋桨，这使它获得高速的前飞速度。

8.The Air Force quickly became the think tank's main contractor, and Rand began consulting on everything from propeller turbines to missile defense.

空军很快成为了这家智库的主要承包商，兰德开始就从螺旋桨涡轮到导弹防御等一切问题进行咨询。

9.The drone uses a four-blade propeller for better stability.

这款无人机使用四叶螺旋桨以获得更好的稳定性。

10.After inspecting the propeller, the mechanic found a small crack.

检查螺旋桨后，机械师发现了一个小裂缝。

11.The propeller spins rapidly to propel the aircraft forward.

这款螺旋桨快速旋转以推动飞机向前。

12.He adjusted the pitch of the propeller to improve efficiency.

他调整了螺旋桨的角度以提高效率。

13.The boat's propeller was damaged during the storm.

船的螺旋桨在暴风雨中受损。

作文

The world of aviation and maritime navigation has always fascinated me, especially the intricate mechanisms that allow vehicles to move through air and water. One of the most essential components in this realm is the propeller, a device that plays a crucial role in the propulsion of aircraft and boats. Understanding how a propeller works can deepen our appreciation for engineering and innovation.A propeller consists of blades that rotate around a central hub. When these blades spin, they create a difference in air or water pressure, generating thrust. This principle of thrust generation is fundamental to both airplanes and ships. In aviation, a well-designed propeller can significantly enhance an aircraft's performance, enabling it to achieve higher speeds and greater fuel efficiency.Historically, the development of the propeller has been a fascinating journey. The earliest forms of propellers were inspired by the concept of the screw, which dates back to ancient Greece. The invention of the modern propeller is attributed to pioneers like Sir George Cayley and Octave Chanute, who laid the groundwork for powered flight. Their innovations paved the way for the Wright brothers, whose successful flight in 1903 marked a significant milestone in aviation history.In maritime contexts, propellers are equally vital. Ships rely on these devices to navigate through oceans and rivers. A ship's propeller is usually submerged in water, and its design can vary based on the vessel's purpose. For example, cargo ships often have larger, more robust propellers to generate substantial thrust for heavy loads, while speedboats may utilize smaller, high-speed propellers for quick maneuvers.The efficiency of a propeller can be influenced by numerous factors, including its shape, size, and the material from which it is made. Engineers continuously experiment with different designs to optimize performance. Advances in technology have led to the creation of composite materials that are lighter and more durable than traditional metals, allowing for improved propeller designs that enhance overall efficiency.Moreover, the environmental impact of propellers cannot be overlooked. As the world becomes increasingly aware of climate change, there is a growing emphasis on developing more sustainable propulsion systems. Innovations such as electric propellers and hybrid systems are being explored to reduce emissions and reliance on fossil fuels. These advancements not only benefit the environment but also present new challenges and opportunities for engineers and designers.In conclusion, the propeller is much more than just a rotating blade; it is a marvel of engineering that has evolved over centuries. Its significance in both aviation and maritime navigation underscores the importance of understanding the principles behind its operation. As we look to the future, the ongoing development of propellers will undoubtedly play a pivotal role in shaping the next generation of transportation technologies. Embracing innovation while considering environmental sustainability will ensure that the legacy of the propeller continues for years to come.

航空和海洋导航的世界一直让我着迷，尤其是那些使车辆能够在空气和水中移动的复杂机制。在这个领域中，最重要的组成部分之一就是螺旋桨，它在飞机和船只的推进中发挥着至关重要的作用。理解螺旋桨的工作原理可以加深我们对工程和创新的欣赏。螺旋桨由围绕中心轴旋转的叶片组成。当这些叶片旋转时，它们会产生空气或水压差，从而产生推力。这种推力生成的原理对于飞机和船只都是至关重要的。在航空领域，设计良好的螺旋桨可以显著提高飞机的性能，使其实现更高的速度和更好的燃油效率。历史上，螺旋桨的发展历程是一段引人入胜的旅程。最早形式的螺旋桨受到了螺钉概念的启发，追溯到古希腊。现代螺旋桨的发明归功于乔治·凯利爵士和奥克塔夫·沙纽特等先驱，他们为动力飞行奠定了基础。他们的创新为莱特兄弟铺平了道路，后者在1903年的成功飞行标志着航空史上的一个重要里程碑。在海洋环境中，螺旋桨同样至关重要。船只依赖这些设备在海洋和河流中航行。一艘船的螺旋桨通常浸没在水中，其设计可以根据船只的用途而有所不同。例如，货船通常具有更大、更坚固的螺旋桨，以便为重载产生相当大的推力，而快艇可能利用较小的高速螺旋桨进行快速机动。螺旋桨的效率可能会受到多种因素的影响，包括其形状、大小以及所用材料。工程师们不断尝试不同的设计，以优化性能。技术的进步导致复合材料的出现，这些材料比传统金属更轻、更耐用，从而允许改进的螺旋桨设计，提高整体效率。此外，螺旋桨的环境影响也不容忽视。随着全球对气候变化的关注日益加剧，越来越强调开发更可持续的推进系统。电动螺旋桨和混合动力系统等创新正在被探索，以减少排放和对化石燃料的依赖。这些进步不仅有利于环境，也为工程师和设计师提供了新的挑战和机遇。总之，螺旋桨不仅仅是一个旋转的叶片；它是一个经过几个世纪演变而来的工程奇迹。它在航空和海洋导航中的重要性凸显了理解其运作原理的重要性。展望未来，螺旋桨的不断发展无疑将在塑造下一代交通技术中发挥关键作用。在接受创新的同时考虑环境可持续性，将确保螺旋桨的遗产在未来几年继续存在。