Before revision: In a test in Japan in February 2008, a prototype about long and wide (reported by other sources as <ref name="GU01"> ) survived Mach 7 speeds and temperatures reported to be in a hypersonic wind tunnel for 10 seconds.
After revision: In a test in Japan in February 2008, a prototype about long and wide (reported by other sources as ) survived Mach 7 speeds and temperatures reported to be in a hypersonic wind tunnel for 10 seconds.