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поступающие на то или иное тело, разрушая его, тем не менее, могут не успеть закончить эту „работу“ прежде, чем спуск прекратится. Именно этот эффект и используется при тепловой защите спускаемых аппаратов. С этой целью на их корпус с внешней стороны наносится специальное покрытие, которое при аэродинамическом нагреве разрушается, поглощая при этом некоторое количество тепла. Поскольку величина теплового потока, поступающего при спуске аппарата на единицу его площади, вполне определенная, можно выбрать такую толщину теплозащитного покрытия, при которой этот поток будет им поглощен, а основной корпус аппарата остается неповрежденным». [3] Особенно важно отметить в этой цитате утверждение о том, что в природе нет материалов, способных выдержать такие тепловые нагрузки!

      Конец ознакомительного фрагмента.

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