NewsWorldKnow about SR-72 spy plane that can traverse a continent in less than an hour
Know about SR-72 spy plane that can traverse a continent in less than an hour
New Delhi: SR-72 blackbird is a spy plane that can cross a continent in less than an hour.The unmanned, hypersonic aircraft is being designed by American aerospace company Lockheed Martin.With a mach speed of 6,
SR-71 was in its time the fastest, and had broken the speed records when it flew from New York to London in less than two hours in 1976.
SR-71 was used most widely by the US military during the Cold War.
