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The first unconfirmed reports about the SR-72 appeared in 2007, when various sources said Lockheed Martin was developing an airplane able to fly six times the speed of sound or Mach 6 (4,000 mph; 6,400 km/h; 3,500 kn) for the Air Force [4] [5] —about twice as fast as the SR-71. Lockheed Martin had been collaborating with Aerojet Rocketdyne ...
Lockheed Martin SR-72, a proposed hypersonic airplane under development by Lockheed Martin; State Route 72, several highways numbered 72 in the US
The Lockheed SR-71 "Blackbird ... As of 2018, Lockheed Martin was developing a proposed UAV successor, the SR-72, with plans ... but with a Mach 1.5 speed limit. ...
A fact from Lockheed Martin SR-72 appeared on Wikipedia's Main Page in the Did you know column on 5 November 2013 (check views).The text of the entry was as follows: Did you know... that the recently revealed Lockheed Martin SR-72, the successor to the SR-71, is designed to fly at six times the speed of sound?
The Lockheed Martin SR-71 Blackbird is one of the most recognizable aircraft designs in history. Few other planes have captured the public's attention and imagination in quite the same way as the ...
The Lockheed SR-71 Blackbird is the current record-holder for a crewed airbreathing jet aircraft. An air speed record is the highest airspeed attained by an aircraft of a particular class. The rules for all official aviation records are defined by Fédération Aéronautique Internationale (FAI), [1] which also ratifies any claims. Speed records ...
This is a list of aircraft produced or proposed by the Lockheed Aircraft Corporation from its founding as the Lockheed Aircraft Company in 1926 to its merging with Martin Marietta to form the Lockheed Martin Corporation in 1995. Ordered by model number, Lockheed gave most of its aircraft astronomical names, from the first Vega to the C-5 Galaxy.
It sure looks like Darkstar, Lockheed Martin's secret high-speed jet, is real. The long-rumored SR-71 successor last seen in Top Gun: Maverick may be legit.