heat shield

简明释义

隔热罩热屏蔽

英英释义

例句

1.During the launch, the heat shield must remain intact to ensure the safety of the crew.

在发射过程中，热防护罩必须保持完好，以确保机组人员的安全。

2.The heat shield on the satellite protects it from solar radiation.

卫星上的热防护罩保护它免受太阳辐射的影响。

3.The spacecraft's heat shield is designed to protect it from the intense heat during re-entry.

宇宙飞船的热防护罩旨在保护其在重返大气层时免受强烈高温的影响。

4.Engineers tested the new heat shield material to ensure it can withstand extreme temperatures.

工程师们测试了新的热防护罩材料，以确保它能承受极端温度。

5.After several flights, the heat shield showed signs of wear and needed to be replaced.

经过几次飞行，热防护罩显示出磨损迹象，需要更换。

作文

In the realm of aerospace engineering, the term heat shield refers to a critical component designed to protect spacecraft and their occupants from the intense heat generated during re-entry into the Earth's atmosphere. When a spacecraft re-enters the atmosphere at high speeds, it encounters friction with air molecules, which creates extreme temperatures that can exceed thousands of degrees Celsius. Without a properly functioning heat shield (热防护罩), the integrity of the spacecraft and the safety of its crew would be severely compromised.The design of a heat shield is a complex engineering challenge. It must be lightweight yet strong enough to withstand the immense thermal and mechanical stresses encountered during re-entry. Various materials are used in the construction of heat shields, including ablative materials that absorb heat and then gradually erode away, carrying the heat with them. This process prevents the heat from penetrating into the spacecraft itself. For example, NASA's Apollo missions utilized an ablative heat shield made from a material called Phenolic Impregnated Carbon Ablator (PICA), which effectively protected astronauts during their return to Earth.Another type of heat shield is the ceramic tile system used on the Space Shuttle. These tiles were designed to withstand extreme temperatures and provided a durable solution for protecting the shuttle's structure. The development of such advanced materials has greatly enhanced the safety and reliability of space travel.The importance of heat shields extends beyond just human spaceflight; they are also crucial for robotic missions. For instance, the Mars rovers, such as Curiosity and Perseverance, are equipped with heat shields to protect them during their entry into the Martian atmosphere. These missions rely on the effectiveness of heat shields to ensure that the delicate instruments and technology aboard are not damaged by the intense heat generated during landing.As we look towards the future of space exploration, the role of heat shields will become even more significant. With plans for missions to Mars and beyond, engineers are constantly innovating to develop new materials and designs that can withstand greater temperatures and provide better protection. The challenges posed by deep-space travel require advancements in heat shield technology to ensure the safety and success of future missions.In conclusion, the heat shield (热防护罩) plays a vital role in the field of aerospace engineering by safeguarding spacecraft and their crews from the extreme conditions of atmospheric re-entry. The ongoing advancements in heat shield technology reflect the relentless pursuit of knowledge and innovation in the quest for exploration beyond our planet. As we continue to push the boundaries of what is possible in space travel, the significance of heat shields will only grow, underscoring their essential role in the future of humanity's journey into the cosmos.

在航空航天工程领域，术语热防护罩指的是一种关键组件，旨在保护航天器及其乘员免受重返地球大气层时产生的强烈热量的影响。当航天器以高速重新进入大气层时，它会与空气分子发生摩擦，从而产生极端温度，可能超过数千摄氏度。如果没有有效工作的热防护罩，航天器的完整性和机组人员的安全将受到严重威胁。热防护罩的设计是一个复杂的工程挑战。它必须轻便，同时又要足够坚固，以承受重返过程中遇到的巨大热量和机械应力。制造热防护罩的材料多种多样，包括能够吸收热量并逐渐侵蚀的烧蚀材料，通过这种方式带走热量。这一过程可以防止热量渗透到航天器内部。例如，NASA的阿波罗任务使用了一种名为酚醛浸渍碳烧蚀材料（PICA）的烧蚀热防护罩，有效地保护了宇航员在返回地球时的安全。另一种类型的热防护罩是用于航天飞机的陶瓷瓦系统。这些瓦片旨在承受极端温度，并为保护航天飞机的结构提供了一种耐用的解决方案。这种先进材料的发展大大提高了太空旅行的安全性和可靠性。热防护罩的重要性不仅限于载人航天飞行；它们对机器人任务也至关重要。例如，火星探测器，如好奇号和毅力号，都配备有热防护罩，以保护它们在进入火星大气层时。 这些任务依赖于热防护罩的有效性，以确保机载的精密仪器和技术不会因着陆时产生的强烈热量而受损。随着我们展望未来的太空探索，热防护罩的作用将变得更加重要。随着对火星及更远目标的任务计划，工程师们不断创新，开发能够承受更高温度并提供更好保护的新材料和设计。深空旅行所带来的挑战需要在热防护罩技术方面取得进展，以确保未来任务的安全和成功。总之，热防护罩（热防护罩）在航空航天工程领域中发挥着至关重要的作用，保护航天器及其机组人员免受大气重返过程中的极端条件影响。热防护罩技术的持续进步反映了人类在探索我们星球之外的过程中对知识和创新的不懈追求。随着我们继续推动太空旅行的可能性，热防护罩的重要性只会增加，突显其在未来人类探索宇宙旅程中的基本角色。