heat shield

简明释义

热屏蔽

英英释义

例句

1.The design of the heat shield 热防护罩 is crucial for ensuring the spacecraft's integrity upon landing.

设计热防护罩对于确保宇宙飞船着陆时的完整性至关重要。

2.The spacecraft's heat shield 热防护罩 protects it during re-entry into the Earth's atmosphere.

宇宙飞船的热防护罩在重新进入地球大气层时保护它。

3.During the launch, the heat shield 热防护罩 protects the rocket from the intense heat generated by friction.

在发射过程中，热防护罩保护火箭免受摩擦产生的强烈热量。

4.The heat shield 热防护罩 on the space shuttle was critical for its safe landing.

航天飞机上的热防护罩对于其安全着陆至关重要。

5.Engineers tested the new material for the heat shield 热防护罩 to ensure it can withstand extreme temperatures.

工程师测试了新材料用于热防护罩，以确保它能承受极端温度。

作文

The concept of a heat shield is pivotal in various fields, especially in aerospace engineering. A heat shield is a protective barrier designed to absorb and deflect heat away from a spacecraft or any object that is entering an atmosphere at high speeds. This technology is crucial for ensuring the safety and functionality of spacecraft during re-entry into the Earth's atmosphere. When a spacecraft descends, it encounters extreme temperatures due to the friction between the object and the atmospheric particles. Without a heat shield, the intense heat generated could lead to catastrophic failure of the spacecraft. Heat shields come in different forms and materials, tailored to meet the specific needs of each mission. For example, the Space Shuttle utilized a unique tile system made of silica that could withstand temperatures exceeding 1,500 degrees Celsius. These tiles were crucial in protecting the shuttle's structure during re-entry. Similarly, the Mars rovers employed ablative heat shields that would burn away as they entered the Martian atmosphere, dissipating heat in the process. This ablative method not only protects the rover but also reduces the weight of the shield itself, which is essential for space missions where every gram counts.The development of effective heat shields has been a significant milestone in space exploration. Early missions faced numerous challenges due to inadequate thermal protection. For instance, the first human spaceflight missions had to contend with the risk of overheating, which could jeopardize the astronauts' lives. As technology advanced, so did the design and effectiveness of heat shields. The introduction of new materials and engineering techniques has led to more reliable and efficient thermal protection systems.Moreover, the principles behind heat shields are not limited to space travel. They can also be applied in other industries, such as automotive and military applications. For example, vehicles that operate in extreme environments, like racing cars or military aircraft, often use similar technologies to protect sensitive components from heat damage. In these cases, the heat shield serves to maintain optimal operating conditions and prevent failures that could arise from excessive heat exposure.In conclusion, the heat shield is a vital component in the realm of aerospace engineering and beyond. Its ability to protect against extreme temperatures makes it indispensable for the safety and success of missions that venture into hostile environments. As we continue to explore the cosmos and develop new technologies, the role of heat shields will undoubtedly evolve, paving the way for safer and more ambitious explorations in the future. Understanding the mechanics and importance of heat shields not only highlights our advancements in technology but also emphasizes the ongoing quest for knowledge and discovery in the universe.

“热盾”的概念在各个领域中都至关重要，尤其是在航空航天工程中。热盾是一个保护屏障，旨在吸收和偏转高速度进入大气的航天器或任何物体的热量。这项技术对于确保航天器在重新进入地球大气层时的安全和功能至关重要。当航天器下降时，由于物体与大气粒子之间的摩擦，它会遇到极端的温度。没有热盾，产生的强烈热量可能导致航天器的灾难性故障。热盾有不同的形式和材料，针对每个任务的具体需求进行定制。例如，航天飞机使用了一种独特的硅砖系统，可以承受超过1500摄氏度的温度。这些砖块在航天飞机重新进入时至关重要，保护航天飞机的结构。同样，火星探测器采用了可烧蚀的热盾，在进入火星大气时会燃烧，进而散发热量。这种可烧蚀的方法不仅保护了探测器，还减少了盾牌本身的重量，这对于每克都至关重要的太空任务来说是必需的。有效的热盾的发展是太空探索中的一个重要里程碑。早期任务由于热保护不足面临许多挑战。例如，第一次载人航天飞行任务不得不应对过热的风险，这可能危及宇航员的生命。随着技术的进步，热盾的设计和有效性也随之提高。新材料和工程技术的引入使得热保护系统更加可靠和高效。此外，热盾背后的原理并不限于太空旅行。它们还可以应用于其他行业，例如汽车和军事应用。例如，在极端环境中运行的车辆，如赛车或军用飞机，通常使用类似的技术来保护敏感组件免受热损害。在这些情况下，热盾的作用是维持最佳操作条件，防止因过热而导致的故障。总之，热盾是航空航天工程及其他领域中至关重要的组成部分。它抵御极端温度的能力使其在进入恶劣环境的任务中不可或缺。随着我们继续探索宇宙并开发新技术，热盾的角色无疑会不断演变，为未来更安全和更雄心勃勃的探索铺平道路。理解热盾的机制和重要性不仅突显了我们在技术上的进步，还强调了对知识和发现的不断追求。