rocket propulsion

简明释义

喷气推进

英英释义

例句

1.The development of rocket propulsion 火箭推进 systems has revolutionized space travel.

火箭推进系统的发展彻底改变了太空旅行。

2.NASA's latest mission relies on advanced rocket propulsion 火箭推进 technology.

美国宇航局的最新任务依赖于先进的火箭推进技术。

3.Engineers are testing new materials to improve rocket propulsion 火箭推进 efficiency.

工程师们正在测试新材料以提高火箭推进效率。

4.The history of rocket propulsion 火箭推进 dates back to ancient China with the invention of gunpowder.

火箭推进的历史可以追溯到中国古代，源于火药的发明。

5.Understanding the principles of rocket propulsion 火箭推进 is essential for aerospace engineering students.

理解火箭推进的原理对航空航天工程专业的学生至关重要。

作文

Rocket propulsion is a fascinating and complex field of study that has revolutionized our ability to explore space. The basic principle behind rocket propulsion (火箭推进) involves the expulsion of mass in one direction to produce a thrust in the opposite direction, as described by Newton's Third Law of Motion. This fundamental concept allows rockets to overcome Earth's gravitational pull and travel into the vastness of space.The history of rocket propulsion (火箭推进) dates back to ancient times when Chinese inventors created simple gunpowder rockets for military purposes. However, it wasn't until the 20th century that significant advancements were made, particularly during World War II with the development of the V-2 rocket by German engineer Wernher von Braun. His work laid the groundwork for modern rocketry and space exploration.In contemporary times, rocket propulsion (火箭推进) systems can be classified into two main categories: chemical and non-chemical propulsion. Chemical propulsion involves the combustion of propellants, which produces high-pressure gases that are expelled through a nozzle to generate thrust. This method is widely used in most space missions, including those conducted by NASA and SpaceX. For instance, the Space Shuttle utilized liquid oxygen and hydrogen as propellants to achieve the necessary speed to reach orbit.On the other hand, non-chemical propulsion methods, such as electric or ion propulsion, are gaining popularity due to their efficiency and long operational lifespans. These systems use electric energy to accelerate ions, producing thrust over extended periods. While they may not provide the immediate thrust required for launch, they are ideal for deep-space missions where fuel efficiency is paramount. NASA's Dawn spacecraft, which explored the asteroid belt, utilized ion propulsion to navigate through space.The future of rocket propulsion (火箭推进) is incredibly promising, with ongoing research focused on developing new technologies. One such innovation is the concept of reusable rockets, which aims to reduce the costs associated with space travel. SpaceX's Falcon 9 rocket is a prime example of this technology, successfully returning to Earth after launching payloads into space. By reusing rockets, we can make space exploration more sustainable and accessible.Moreover, advancements in propulsion systems could enable human missions to Mars and beyond. Scientists are exploring various options, including nuclear thermal propulsion, which could drastically shorten travel times to distant planets. Such developments not only push the boundaries of human exploration but also inspire future generations to pursue careers in science and engineering.In conclusion, rocket propulsion (火箭推进) is a vital component of our quest to explore the universe. From its historical roots to the cutting-edge technologies being developed today, the field continues to evolve and expand our understanding of space travel. As we look towards the stars, the innovations in rocket propulsion (火箭推进) will undoubtedly play a crucial role in shaping the future of humanity's adventures beyond our planet.

火箭推进是一个迷人而复杂的研究领域，它彻底改变了我们探索太空的能力。火箭推进的基本原理（rocket propulsion）涉及在一个方向上排出质量，以产生在相反方向上的推力，正如牛顿第三定律所描述的那样。这一基本概念使火箭能够克服地球的引力，进入广阔的太空。火箭推进的历史可以追溯到古代，当时中国发明家创造了简单的火药火箭用于军事目的。然而，直到20世纪，特别是在第二次世界大战期间，德国工程师维尔纳·冯·布劳恩开发的V-2火箭才取得了重大进展。他的工作为现代火箭技术和太空探索奠定了基础。在当代，火箭推进系统可以分为两大类：化学推进和非化学推进。化学推进涉及推进剂的燃烧，产生高压气体通过喷嘴排出以产生推力。这种方法在大多数太空任务中被广泛使用，包括NASA和SpaceX进行的任务。例如，航天飞机利用液氧和氢作为推进剂，达到进入轨道所需的速度。另一方面，非化学推进方法，如电推进或离子推进，因其高效性和长操作寿命而越来越受欢迎。这些系统利用电能加速离子，产生长时间的推力。虽然它们可能无法提供发射所需的即时推力，但它们非常适合深空任务，在这些任务中，燃料效率至关重要。NASA的“黎明”号探测器就是利用离子推进在太空中导航的例子。火箭推进的未来极具前景，正在进行的研究专注于开发新技术。其中一项创新是可重复使用火箭的概念，旨在降低与太空旅行相关的成本。SpaceX的猎鹰9号火箭就是这一技术的典范，成功在发射有效载荷后返回地球。通过重复使用火箭，我们可以使太空探索更加可持续和可及。此外，推进系统的进步可能使人类任务前往火星及更远的地方成为可能。科学家们正在探索各种选项，包括核热推进，这可以大幅缩短前往遥远行星的旅行时间。这些发展不仅推动了人类探索的边界，也激励着未来几代人追求科学和工程领域的职业。总之，火箭推进是我们探索宇宙的重要组成部分。从它的历史根源到今天正在开发的尖端技术，这一领域不断发展，扩展了我们对太空旅行的理解。当我们展望星空时，火箭推进无疑将在塑造人类超越我们星球的冒险未来中发挥关键作用。