科学与环境
A real-time look inside spacecraft heat shields during extreme heat conditions
来源: Phys.org - latest science and technology news stories · 发布于
When a spacecraft reenters Earth's atmosphere at hypersonic velocities, its protective heat shield faces extreme conditions, including temperatures beyond 3,000 degrees Fahrenheit (1,650 degrees Celsius). To survive, the shield relies on specialized materials that absorb heat as
When a spacecraft reenters Earth's atmosphere at hypersonic velocities, its protective heat shield faces extreme conditions, including temperatures beyond 3,000 degrees Fahrenheit (1,650 degrees Celsius). To survive, the shield relies on specialized materials that absorb heat as they degrade in a controlled process called ablation, sacrificing the shield's outer layers to protect the vehicle and crew within.
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