THE PENTAGON PLANE MATCHES THE AURORA! (tags)
"If and when 'Aurora' makes its appearance, it is expected to be able to do upwards of Mach 5 or 6 - it is a hypersonic plane built, according to certain sources, on the 'waverider' principle, utilizing 'pulsed wave detonation engines' that employ a unique means of external combustion. Such a hypersonic plane, even if not radar-invisible, would have little trouble penetrating most air defenses at such velocities, and probably could strike with complete anonymity...."