
Planes That Changed the World
Season 1Episode 3Aired 2015-04-07

SR-71 Blackbird - Hypersonic Surveillance
Lockheed were tasked with creating a plane invisible to Russian radar, capable of reaching an altitude of 80,000 ft and speeds of Mach 3.2.


Lockheed were tasked with creating a plane invisible to Russian radar, capable of reaching an altitude of 80,000 ft and speeds of Mach 3.2.