reaction propulsion engine

简明释义

反酌发动机

英英释义

例句

1.NASA's latest rover utilizes a compact reaction propulsion engine 反应推进引擎 for its maneuverability.

美国宇航局最新的探测器采用了一种紧凑型的反应推进引擎以提高其灵活性。

2.The spacecraft was equipped with a powerful reaction propulsion engine 反应推进引擎 to ensure it could reach the outer planets.

这艘宇宙飞船配备了一台强大的反应推进引擎，以确保它能够到达外行星。

3.In order to achieve higher speeds, the team experimented with various designs of the reaction propulsion engine 反应推进引擎.

为了达到更高的速度，团队对各种设计的反应推进引擎进行了实验。

4.Engineers are developing a new type of reaction propulsion engine 反应推进引擎 that uses less fuel.

工程师们正在开发一种新型的反应推进引擎，它使用更少的燃料。

5.The efficiency of the reaction propulsion engine 反应推进引擎 is crucial for long-duration space missions.

对于长期太空任务来说，反应推进引擎的效率至关重要。

作文

In the realm of aerospace engineering, the term reaction propulsion engine refers to a type of engine that generates thrust by expelling mass in the opposite direction of the desired movement. This principle is rooted in Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. Understanding how reaction propulsion engine systems work is crucial for the development of spacecraft and high-speed aircraft. The fundamental concept behind a reaction propulsion engine is relatively simple yet profound. When fuel is burned in a combustion chamber, it produces hot gases that expand rapidly. These gases are then directed through a nozzle, where they exit at high speed. The force generated by this expelled gas propels the engine—and thus the vehicle—forward. This is why such engines are often referred to as 'thrust engines.' There are various types of reaction propulsion engines, including rocket engines, jet engines, and even some experimental designs like ion thrusters. Rocket engines, for instance, operate in the vacuum of space where there is no air to provide lift or thrust. They rely solely on the expulsion of gases to generate the necessary force to propel a spacecraft. Jet engines, on the other hand, operate within the Earth's atmosphere and utilize atmospheric oxygen to combust fuel, making them more efficient for flight at lower altitudes. One of the most significant advantages of reaction propulsion engines is their ability to function in environments where other types of propulsion systems would fail. For example, rockets can travel beyond the Earth's atmosphere, reaching other celestial bodies, thanks to their reliance on the expulsion of mass rather than atmospheric pressure. This capability has enabled humanity to explore the Moon, Mars, and beyond. However, designing an efficient reaction propulsion engine comes with its challenges. Engineers must consider factors such as fuel efficiency, thrust-to-weight ratio, and the materials used in construction to withstand extreme temperatures and pressures. Additionally, the engine must be capable of operating under varying conditions, whether in the dense atmosphere or the vacuum of space. The future of reaction propulsion engines looks promising, with advancements in technology leading to the development of more efficient and powerful engines. Innovations such as reusable rocket systems and hybrid propulsion methods are being explored to reduce costs and improve sustainability in space travel. Furthermore, research into electric propulsion systems, such as ion engines, is paving the way for long-duration missions beyond our solar system. In conclusion, the reaction propulsion engine is a cornerstone of modern aerospace technology. Its ability to generate thrust through the expulsion of mass has revolutionized transportation both within our atmosphere and beyond. As we continue to push the boundaries of exploration, understanding and improving these engines will be essential for future missions to distant planets and potentially habitable worlds. The study of reaction propulsion engines not only enhances our technological capabilities but also expands our knowledge of the universe and our place within it.

在航空航天工程领域，术语反应推进发动机指的是一种通过向相反方向排放质量来产生推力的发动机。这一原理源于牛顿的第三运动定律，该定律指出每一个作用都有一个相等且相反的反作用。理解如何运作的反应推进发动机系统对于航天器和高速飞机的发展至关重要。反应推进发动机的基本概念相对简单但深刻。当燃料在燃烧室中燃烧时，会产生快速扩展的热气体。这些气体随后通过喷嘴导出，以高速度排出。由此产生的力量推动发动机——从而推动车辆向前。这就是为什么这类发动机通常被称为“推力发动机”。有多种类型的反应推进发动机，包括火箭发动机、喷气发动机，甚至一些实验设计如离子推进器。例如，火箭发动机在太空真空中工作，没有空气提供升力或推力。它们完全依赖于质量的排放来产生推动航天器所需的力量。另一方面，喷气发动机在地球大气层内工作，利用大气中的氧气来燃烧燃料，使其在较低高度飞行时更高效。反应推进发动机的一个显著优点是它们能够在其他类型的推进系统无法工作的环境中运作。例如，火箭能够超越地球大气层，抵达其他天体，这要归功于它们依赖于质量的排放，而不是大气压力。这一能力使人类能够探索月球、火星及更远的地方。然而，设计高效的反应推进发动机面临着诸多挑战。工程师必须考虑燃料效率、推重比以及用于建造的材料，以承受极端温度和压力。此外，发动机必须能够在不同条件下运行，无论是在稠密的大气层还是在太空真空中。反应推进发动机的未来看起来充满希望，技术进步正在导致更高效、更强大的发动机的发展。可重复使用的火箭系统和混合推进方法等创新正在被探索，以降低成本并提高太空旅行的可持续性。此外，对电推进系统（如离子发动机）的研究为超越我们太阳系的长期任务铺平了道路。总之，反应推进发动机是现代航空航天技术的基石。其通过质量排放产生推力的能力彻底改变了我们在大气层内外的交通运输。随着我们不断推动探索的边界，理解和改进这些发动机对于未来前往遥远行星和潜在宜居世界的任务至关重要。对反应推进发动机的研究不仅增强了我们的技术能力，也拓展了我们对宇宙及我们在其中位置的理解。