00:00A massive steel tube produces high-enthalpy airflow to test spacecraft thermal protection systems.
00:07At the NASA Langley Research Center, engineers trap compressed gas behind a fast-acting valve.
00:14When the valve snaps open, a violent shockwave rips down the long tube instantly.
00:20This intense pressure surge creates searing temperatures, matching a capsule plunging through planetary skies.
00:27The superheated gas blasts past the test model for milliseconds before the pressure wave completely exhausts.
00:35This sudden blast of extreme heat safely proves if shields survive.
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