ablator

简明释义

英[æbˈleɪtə(r)]美[æˈbleɪtər]

n. 烧蚀挡板；[航] 烧蚀体

英英释义

单词用法

同义词

反义词

例句

1.The flyer design emphasizes conceptually and physically separate functions of light collection at a distance from the laser source, light concentration on the ablator, and autonomous steering.

飞行器草图强调了概念上和物理上各自的功能——从远距离的激光源收集激光、光集中在烧蚀材料上和自主操纵方向。

2.We deduce the formula of the critical thickness of ablator, and put forward the rule of how the thickness of ablator affect the velocities and the stability of flyer.

理论上从阻抗失配效应的临界密度公式，推导出了烧蚀层的临界厚度，并推广到飞片的情形，提出了烧蚀层厚度对飞片速度和稳定性的影响规律。

3.The flyer design emphasizes conceptually and physically separate functions of light collection at a distance from the laser source, light concentration on the ablator, and autonomous steering.

飞行器草图强调了概念上和物理上各自的功能——从远距离的激光源收集激光、光集中在烧蚀材料上和自主操纵方向。

4.The ablator (减热材料) used in this rocket has been designed for maximum efficiency.

这枚火箭使用的ablator（减热材料）经过设计，以实现最大效率。

5.During the launch, the ablator (减热材料) will gradually erode to dissipate heat.

在发射过程中，ablator（减热材料）将逐渐侵蚀以散发热量。

6.The spacecraft's heat shield is equipped with an advanced ablator (减热材料) to protect it during re-entry.

航天器的热盾配备了一种先进的ablator（减热材料），以保护其在重返大气层时。

7.Engineers are testing a new type of ablator (减热材料) that can withstand higher temperatures.

工程师正在测试一种新的ablator（减热材料），它可以承受更高的温度。

8.The research team focused on improving the thermal resistance of the ablator (减热材料).

研究小组专注于提高ablator（减热材料）的热阻力。

作文

In the realm of aerospace engineering, one of the critical components that ensure the safety and effectiveness of spacecraft during re-entry into the Earth's atmosphere is the ablator. An ablator is a material designed to absorb heat and protect the underlying structure from the extreme temperatures generated during this process. As a spacecraft descends through the atmosphere at high speeds, it encounters intense friction, which leads to the generation of heat. Without an effective ablator, the spacecraft would likely disintegrate or suffer catastrophic failure due to the thermal stresses involved.The concept of an ablator is not new; it has been utilized since the early days of space exploration. For instance, the Mercury and Apollo missions employed various types of ablative materials to shield astronauts from the searing heat of atmospheric re-entry. These materials work by a process known as ablative cooling, where the outer layer of the ablator vaporizes and carries away heat, effectively insulating the inner layers and protecting the spacecraft's critical systems.Modern advancements in materials science have led to the development of more sophisticated ablators, such as those made from phenolic resin or carbon composites. These materials offer better performance, higher temperature resistance, and lighter weight compared to their predecessors. The choice of an ablator is crucial for mission success, as it must withstand not only the high temperatures but also the mechanical stresses that occur during re-entry.One of the most famous examples of ablator technology in action is NASA's Space Shuttle program. The shuttle's thermal protection system incorporated thousands of individual tiles made from silica-based materials, which acted as ablators. These tiles were engineered to withstand temperatures exceeding 1,500 degrees Celsius while ensuring that the shuttle's structure remained intact. The successful use of these ablators allowed for multiple flights and re-entries, showcasing the durability and reliability of this technology.As we look towards future space missions, including crewed missions to Mars, the role of ablators will continue to be paramount. Engineers are currently researching new materials that can withstand even more extreme conditions, such as those encountered during entry into other planetary atmospheres. The ongoing development of advanced ablators will play a vital role in ensuring the safety of astronauts and the success of their missions.In conclusion, the significance of the ablator in aerospace engineering cannot be overstated. It serves as a protective barrier against the harsh conditions of atmospheric re-entry, safeguarding both human life and technological advancements. As we continue to explore the vastness of space, the evolution of ablators will undoubtedly pave the way for new discoveries and innovations in our quest to understand the universe.

在航空航天工程领域，确保航天器在重新进入地球大气层时的安全性和有效性的关键组件之一就是ablator。ablator是一种旨在吸收热量并保护底层结构免受在这一过程中产生的极端温度影响的材料。当航天器以高速下降穿过大气层时，会遇到强烈的摩擦，这会导致热量的产生。如果没有有效的ablator，航天器很可能会因热应力而解体或遭遇灾难性故障。ablator的概念并不新颖；自太空探索早期以来就已被使用。例如，水星号和阿波罗任务采用了各种类型的可烧蚀材料来保护宇航员免受大气重新进入时的灼热。 这些材料通过一种称为可烧蚀冷却的过程工作，外层的ablator蒸发并带走热量，有效地绝缘内层，保护航天器的关键系统。现代材料科学的进步导致了更复杂的ablators的发展，例如由酚醛树脂或碳复合材料制成的ablators。与其前身相比，这些材料提供了更好的性能、更高的温度抵抗力和更轻的重量。ablator的选择对任务的成功至关重要，因为它必须承受不仅是高温，还有在重新进入过程中发生的机械应力。最著名的ablator技术实例之一是美国国家航空航天局的航天飞机计划。航天飞机的热保护系统包含数千个由硅基材料制成的单独瓷砖，这些瓷砖充当ablators。这些瓷砖经过工程设计，可以承受超过1500摄氏度的温度，同时确保航天飞机的结构保持完整。这些ablators的成功使用使得多次飞行和重新进入成为可能，展示了这一技术的耐用性和可靠性。展望未来的太空任务，包括载人火星任务，ablators的角色将继续至关重要。工程师们目前正在研究能够承受更极端条件的新材料，例如在进入其他行星大气层时遇到的条件。先进ablators的持续发展将在确保宇航员安全和任务成功方面发挥至关重要的作用。总之，ablator在航空航天工程中的重要性不可低估。它作为抵御大气重新进入恶劣条件的保护屏障，保护了人类生命和技术进步。随着我们继续探索浩瀚的太空，ablators的演变无疑将为我们理解宇宙的探索铺平道路。