Lockheed Martin’s highly anticipated uncrewed hypersonic aircraft, the SR-72 “Son of Blackbird,” is allegedly scheduled to take its first flight in 2025. This cutting-edge aircraft is not just a technological marvel but also a strategic asset touted to redefine the domain of hypersonic flight. The SR-72, believed to be a top-secret project of the United States Air Force, is expected to reach speeds exceeding 4,000 mph (6,437 kph), which would make it the fastest plane ever developed.
Building on the legendary legacy of the SR-71 “Blackbird,” which set unmatched speed records in 1974 and retired as the fastest manned aircraft in 1998, the SR-72 is designed to be unmanned, hypersonic, and reusable. Its primary roles are anticipated to be intelligence, surveillance, and reconnaissance (ISR) activities, similar to its predecessor. However, with its increased capabilities, the SR-72 will likely push the boundaries of aerial warfare and aerial surveillance.
The SR-72, also known as the “Son of Blackbird,” is part of the US Air Force’s ambitious goal to advance aviation technology and take control of the skies. It’s not only slated to become the fastest-ever plane but is also designed to be an extremely fast, hypersonic, high-altitude surveillance aircraft. Interestingly, it’s said to have the capability to fire projectiles, including hypersonic weapons, more quickly than any predecessor.
One of the key features of the SR-72 is its ability to maintain hypersonic speeds for extended periods, a crucial requirement for modern military operations. Although the plane’s development is not officially linked to the Pentagon yet, it’s believed that military officials are closely monitoring the progress of Lockheed Martin’s advanced aircraft.
Lockheed Martin is developing the SR-72 as part of their Advanced Development Programs, popularly known as “Skunk Works.” The SR-72 is a hypersonic demonstrator aircraft that eliminates the need for a human in the cockpit, which could revolutionize how the military operates its aircraft.
The SR-72 promises to be nearly twice as fast as the SR-71, potentially making it almost invincible against current defensive systems. The new aircraft will be of a similar size to its legendary predecessor, approximately 100 feet long, but will fly at heights of 80,000 to 85,000 feet—far above any commercial aircraft.
Despite the SR-71 having never been shot down—having evaded 4,000 missile attempts in its service lifetime—modern threats like directed-energy weapons and hypersonic munitions present new challenges for the SR-72. Rob Weiss, Lockheed Martin’s executive vice president and general manager for Advanced Development Programs, spoke to Aviation Week about the aircraft and its impressive ability.
He said: “We’ve been saying hyper sonics is two years away for the last 20 years, but all I can say is the technology is mature and we, along with DARPA [Defense Advanced Research Projects Agency] and the services, are working hard to get that capability into the hands of our warfighters as soon as possible.”
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