propellent

简明释义

英[prəˈpelənt]美[prəˈpelənt]

n. 推动者；推进物；推进燃料

adj. 推进的；有推动力的

英英释义

单词用法

同义词

反义词

例句

1.An application of fracture mechanics to the safety evaluation of rocket propellent tank was presented.

介绍了断裂力学在火箭推进剂贮箱安全评定中的应用。

2.After having solved the aging problems of beams, the long term aging effect of a solid propellent grain is also analyzed as an example.

在对梁的受拉伸与自重情形下的老化作了分析后，举例分析了真实固体火箭发动机药柱的长期老化效应。

3.In this paper, new wagon wheel grain configuration has been suggested in order to improve rocket's concentration and propellent loading density.

该文针对提高火箭密集度及装填密度的要求，设计了双辐条轮孔装药药型。

4.China plays the active role of a participant and propellent in the security cooperation, which has made great progress, with Southeast Asia and Central Asia.

中国在东南亚地区和中亚地区现有安全合作框架中起着积极参与者和推动者的作用，安全合作取得了不小的进展。

5.The experimental system includes a vacuum simulation section, power supply section, propellent feed section, parameter measurement section and an arcjet.

试验系统包括真空模拟系统，供电系统，推进剂供给系统，参数测量系统和发动机本体。

6.KingSuper in the future, hope to become the propellent of technical progress in the same industry.

未来的科超，争取做行业技术进步的推动者。

7.Other advantages of the propellent with a negative pressure exponent were also presented.

还指出了负压力指数推进剂的其它优点。

8.The propellent is at least one of trichlorofluoromethane, dichlorodifluoromethane, dichlorotetrafluoroethane, nitrogen and carbon dioxide.

抛射剂为三氯一氟甲烷、二氯二氟甲烷、二氯四氟乙烷、氮气和二氧化碳中的至少一种。

9.In terms of science & technology (S&T) being first productivity, S&T talents have become the important former, disseminator and propellent of advanced productivity and advanced culture.

在科学技术成为第一生产力的条件下，科技人才已成为先进生产力和先进文化的重要创造者、传播者和推动者。

10.The choice of propellent can greatly affect the performance of a jet engine.

选择推进剂会极大影响喷气发动机的性能。

11.Research on eco-friendly propellent alternatives is gaining momentum.

对环保型推进剂替代品的研究正在加速进行。

12.The rocket uses a powerful propellent to launch into space.

火箭使用强大的推进剂发射进入太空。

13.Aerosol cans often use gas as a propellent to disperse the product.

气雾罐通常使用气体作为推进剂来分散产品。

14.In this experiment, we will analyze the efficiency of different types of propellent.

在这个实验中，我们将分析不同类型的推进剂的效率。

作文

In the world of science and technology, there are many fascinating concepts that drive innovation and exploration. One such concept is the idea of a propellent, which is a substance used to create thrust in various applications, particularly in aerospace engineering. Understanding how propellents work can provide insight into the remarkable advancements in space travel and missile technology.A propellent is typically a chemical or physical substance that, when expelled from a system, generates a force that propels an object forward. This principle is based on Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. When a propellent is ignited or released, it produces a high-speed jet of gas that pushes against the walls of the combustion chamber, resulting in thrust.There are two main types of propellents: solid and liquid. Solid propellents are often used in military missiles and some space launch vehicles. They consist of a mixture of fuel and oxidizer that is preloaded into a casing. Once ignited, the combustion process occurs uniformly, providing a steady thrust until the fuel is exhausted. This type of propellent is favored for its simplicity and reliability, making it a popular choice for various applications.On the other hand, liquid propellents offer more flexibility in terms of thrust control and performance. Liquid propellents are composed of separate fuel and oxidizer components that are stored in tanks and mixed just before combustion. This allows for throttling and the ability to shut down and restart engines, which is crucial for missions requiring precise maneuvering, such as those undertaken by spacecraft. The combination of different types of fuels and oxidizers can also lead to enhanced efficiency and performance, making liquid propellents a preferred choice for many modern rockets.The development of advanced propellent technologies has significantly impacted space exploration. For instance, the use of hypergolic propellents, which ignite spontaneously upon contact, has enabled spacecraft to achieve greater reliability in critical situations. These propellents are often used in spacecraft thrusters, such as those found in the Apollo Lunar Module, allowing astronauts to navigate safely on the Moon's surface.Moreover, research into environmentally friendly propellents is gaining traction as the aerospace industry seeks to reduce its carbon footprint. Innovations in green propellent formulations aim to replace traditional toxic chemicals with safer alternatives, ensuring that future space missions are not only efficient but also sustainable.In conclusion, the study of propellents is essential for understanding the mechanics behind propulsion systems in aerospace applications. As technology continues to evolve, the importance of developing efficient, reliable, and environmentally friendly propellents will play a crucial role in shaping the future of space exploration and beyond. By grasping the fundamentals of propellent technology, we can appreciate the complexity and ingenuity involved in reaching for the stars and exploring the unknown. The journey of humanity into space is propelled by the very essence of these remarkable substances, paving the way for new discoveries and advancements in our quest for knowledge.

在科学和技术的世界中，有许多令人着迷的概念推动着创新和探索。其中一个概念就是“propellent”，它是一种用于在各种应用中产生推力的物质，特别是在航空航天工程中。理解propellent的工作原理可以提供对太空旅行和导弹技术显著进步的洞察。propellent通常是化学或物理物质，当从系统中排出时，会产生一种力，推动物体向前。这一原理基于牛顿的第三运动定律，即每个动作都有一个相等且相反的反应。当propellent被点燃或释放时，它会产生高速气体喷流，推动燃烧室的壁，从而产生推力。propellent主要有两种类型：固体和液体。固体propellent通常用于军事导弹和一些空间发射载具。它们由预装入外壳中的燃料和氧化剂混合物组成。一旦点燃，燃烧过程就会均匀发生，提供稳定的推力，直到燃料耗尽。这种类型的propellent因其简单性和可靠性而受到青睐，成为各种应用的热门选择。另一方面，液体propellent在推力控制和性能方面提供了更多的灵活性。液体propellent由分别存储在罐中的燃料和氧化剂组件组成，并在燃烧前混合。这允许调节推力以及关闭和重新启动引擎，这对于需要精确机动的任务至关重要，例如航天器进行的任务。不同类型的燃料和氧化剂的组合也可以提高效率和性能，使液体propellent成为许多现代火箭的首选。先进的propellent技术的发展对太空探索产生了重大影响。例如，使用超自燃propellent（即接触后自燃的propellent）使航天器能够在关键情况下实现更大的可靠性。这些propellent通常用于航天器的推进器，如阿波罗登月舱中的推进器，使宇航员能够安全地在月球表面导航。此外，随着航空航天行业寻求减少碳足迹，对环保型propellent的研究正获得关注。绿色propellent配方的创新旨在用更安全的替代品取代传统的有毒化学物质，确保未来的太空任务不仅高效，而且可持续。总之，研究propellent对理解航空航天应用中推进系统的机制至关重要。随着技术的不断发展，开发高效、可靠和环保的propellent的重要性将在塑造太空探索及其未来中发挥关键作用。通过掌握propellent技术的基本原理，我们可以欣赏到在追求知识的过程中，推动人类探索星空的复杂性和创造力。这段人类进入太空的旅程正是由这些非凡物质的本质推动着，为我们在探索未知领域的新发现和进步铺平了道路。