free-wheeling propeller

简明释义

(未接动力

英英释义

例句

1.The free-wheeling propeller 自由旋转的螺旋桨 helps reduce drag when the aircraft is not powered.

当飞机没有动力时，自由旋转的螺旋桨 free-wheeling propeller 有助于减少阻力。

2.The aircraft's engine malfunctioned, causing the free-wheeling propeller 自由旋转的螺旋桨 to spin without power.

飞机的引擎发生故障，导致自由旋转的螺旋桨 free-wheeling propeller 无法获得动力而旋转。

3.Engineers tested the free-wheeling propeller 自由旋转的螺旋桨 in a wind tunnel to study its efficiency.

工程师们在风洞中测试自由旋转的螺旋桨 free-wheeling propeller 的效率。

4.During the glide phase, the pilot relied on the free-wheeling propeller 自由旋转的螺旋桨 to maintain control of the descent.

在滑行阶段，飞行员依靠自由旋转的螺旋桨 free-wheeling propeller 来保持下降的控制。

5.The design of the free-wheeling propeller 自由旋转的螺旋桨 allows for safer landings in case of engine failure.

这种自由旋转的螺旋桨 free-wheeling propeller 的设计使得在引擎故障时能够更安全地着陆。

作文

In the world of aviation and marine engineering, propulsion systems play a crucial role in determining the efficiency and performance of vehicles. One of the fascinating components that often comes into discussion is the free-wheeling propeller (自由旋转螺旋桨). This term refers to a type of propeller that can rotate freely without being directly driven by a power source. This design allows for greater efficiency, especially in scenarios where the vehicle is coasting or gliding. The concept of a free-wheeling propeller is particularly significant in the context of sailboats and certain aircraft, where maintaining momentum is essential for performance. When a sailboat is moving under the power of the wind, the free-wheeling propeller effectively reduces drag when the engine is off. This means that as the boat sails, the propeller spins with the water flow, allowing the vessel to glide smoothly without the need for engine power. This not only enhances fuel efficiency but also minimizes noise pollution, making the sailing experience more enjoyable for both passengers and the surrounding environment. In aviation, the free-wheeling propeller plays a similar role. In certain aircraft, particularly those designed for gliding or soaring, the propeller can continue to spin as the aircraft descends. This phenomenon helps maintain aerodynamic efficiency and control during flight. By allowing the propeller to rotate freely, pilots can harness the energy from the airflow to assist in maneuverability, thereby enhancing safety and performance. The mechanics behind a free-wheeling propeller involve a clever use of gears and bearings that allow the propeller blades to turn independently of the engine. This system is engineered to ensure that when the engine is engaged, the propeller is driven actively, providing thrust. Conversely, when the engine is disengaged or during coasting, the propeller can rotate without resistance, utilizing the natural forces of the environment. This dual functionality is what makes the free-wheeling propeller an innovative solution in both marine and aviation technology.Moreover, the implementation of free-wheeling propellers also aligns with modern trends towards sustainability. As industries around the globe shift focus towards reducing carbon footprints and enhancing energy efficiency, technologies like the free-wheeling propeller are becoming increasingly important. By maximizing the use of natural forces, engineers can design vehicles that consume less fuel and produce fewer emissions, contributing to a healthier planet.In conclusion, the free-wheeling propeller (自由旋转螺旋桨) represents a remarkable advancement in propulsion technology, offering benefits in efficiency, performance, and sustainability. Whether in the context of sailing or aviation, understanding how this component works can provide valuable insights into the future of transportation. As we continue to innovate and explore new technologies, the free-wheeling propeller will undoubtedly remain a key player in the evolution of how we travel across land and sea.

在航空和海洋工程的世界中，推进系统在决定车辆的效率和性能方面发挥着至关重要的作用。一个经常被讨论的迷人组成部分是自由旋转螺旋桨（free-wheeling propeller）。这个术语指的是一种可以自由旋转而不直接由动力源驱动的螺旋桨。这种设计允许更高的效率，尤其是在车辆滑行或滑翔的情况下。自由旋转螺旋桨的概念在帆船和某些飞机的背景下尤为重要，因为保持动量对性能至关重要。当一艘帆船在风的推动下移动时，自由旋转螺旋桨有效地减少了发动机关闭时的阻力。这意味着，当船只航行时，螺旋桨与水流一起旋转，使船只能够平稳滑行，而无需发动机动力。这不仅提高了燃油效率，还最小化了噪音污染，使航行体验对乘客和周围环境都更加愉悦。在航空领域，自由旋转螺旋桨扮演着类似的角色。在某些飞机中，特别是那些设计用于滑翔或翱翔的飞机，螺旋桨可以在飞机下降时继续旋转。这种现象有助于在飞行过程中保持空气动力效率和控制。通过允许螺旋桨自由旋转，飞行员可以利用气流中的能量来辅助操控，从而提高安全性和性能。自由旋转螺旋桨背后的机械原理涉及齿轮和轴承的巧妙使用，这使得螺旋桨叶片能够独立于发动机旋转。这一系统经过工程设计，确保当发动机启动时，螺旋桨被积极驱动，提供推力。相反，当发动机关闭或在滑行时，螺旋桨可以无阻力地旋转，利用环境的自然力量。这种双重功能使得自由旋转螺旋桨成为海洋和航空技术中的创新解决方案。此外，自由旋转螺旋桨的实施也与现代可持续发展的趋势相一致。随着全球各行业将重点转向减少碳足迹和提高能源效率，像自由旋转螺旋桨这样的技术变得越来越重要。通过最大限度地利用自然力量，工程师可以设计出消耗更少燃料、产生更少排放的车辆，为保护地球做出贡献。总之，自由旋转螺旋桨（free-wheeling propeller）代表了推进技术的显著进步，在效率、性能和可持续性方面提供了好处。无论是在帆船还是航空的背景下，理解这一组件的工作原理可以为我们提供有关未来交通的重要见解。随着我们继续创新和探索新技术，自由旋转螺旋桨无疑将在我们如何在陆地和海洋上旅行的演变中继续发挥关键作用。