This article introduces basic problems and solutions concerning the feasibility assessment of NASP program .
本文介绍了与NASP的可行性评定有关的基本问题和方法。
The National Aerospace Plane ( NASP ) is a horizontal takeoff and landing , single-stage-to-orbit vehicle .
空天飞机（NASP）是水平起飞、着陆的单级入轨飞行器。
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