https://www.youtube.com/watch?v=LdfMODJuRAU

SR-72: The U.S. Military’s New Insanely Fast Spy Plane Or Strike AircraftThe Lockheed Martin SR-72, colloquially referred to as “Son of Blackbird”, is an American hypersonic UAV concept intended for intelligence, surveillance and reconnaissance proposed privately in 2013 by Lockheed Martin as a successor to the retired Lockheed SR-71 Blackbird. The company expected an SR-72 test vehicle could fly by 2023.The SR-72 is to be similar in size to the SR-71 at over 100 ft (30 m) long and have the same range, with entry into service by 2030. The SR-72 follows the US Air Force’s hypersonic road map for developing a hypersonic strike weapon by 2020, and a penetrating ISR aircraft by 2030. At the time of the concept’s unveiling, Lockheed Martin had engaged in talks with government officials, but has not secured funding for the demonstrator or engine.