Connect with us

Hi, what are you looking for?


Why the SR-72 Son of Blackbird Spy Plane Could Be a Mach 6 Bomber

SR-72 Son of Blackbird. Image Credit: Creative Commons.

The SR-72 Son of Blackbird comes and goes off the internet military radar year after year as very little information is known about it. However, one thing seems pretty clear: if it does come to fruition, it could be a real game-changer for the US military. 

The much-discussed but much unknown Mach 6 SR-72 Son of Blackbird will be, by all accounts, an amazing airplane if it succeeds in development. At that speed, it could likely get anywhere in the world in literally no time at all. The potentially unmanned hypersonic aircraft adds a new dimension to intelligence, surveillance, and reconnaissance. There are currently strategic recon drones in service such as the Global Hawk, but this unmanned system only goes a top speed of 391 miles per hour. It would be easy to shoot it down. An SR-72, would not, and explains to a great extent the appeal of such an aircraft and all of the rumors and interest.

Why SR-72? The Speed

Alternatively, the Son of Blackbird, at Mach 6, could outfly existing fighter planes and air defenses. The next-generation spy plane is only a technology demonstrator at this point. Lockheed Martin Skunk Works is keeping many details of the spy drone under wraps, but the demonstrator could take a maiden flight in 2023, maybe even as late as 2025. If all goes well it would enter into service in 2030.

SR-72 Can It Work?

Some skeptics are not even sure the Son of Blackbird will ever become a reality.

The specs are ambitious. Such a hypersonic speed will be a technological hurdle. Landing and takeoff would be a challenge. The SR-72 may have to be launched with another airplane. It could be an armed recon bird making development even more complicated. Some reporting even claims the aircraft is supposed to have a high-speed strike weapon that is likely a tactical boost-glide hypersonic cruise missile.

SR-72 Mach 6: There’s a Long Development Path

Many technology integration milestones will have to be met if the demonstrator flies in two to four years.

For one, the advanced scramjet engine is a hurdle. Therefore, due to these requirements, the entire SR-72 program would need funding for at least 10 years, perhaps even 15 years. What if air defenses improve by then? Many defense technology evolutions could take place in the coming years eliminating the advantages of the Son of Blackbird.

Lockheed Martin has not discussed the cost of the SR-72, although the defense contractor has mentioned a precursor drone that could have a price tag of $1 billion. This would then lead to the production of the SR-72. So, the Son of Blackbird could be built in phases with improved prototypes as the technology matures. Maybe even 3D-printed parts would be required. Radar-evading characteristics are not clear.

What about stealth? Could the SR-72 be stealthy? The heat generated by the hypersonic speeds would allow enemy sensors to see it. At that temperature, radar-absorbing materials would be burned off.

SR-72 Darkstar

SR-72 Darkstar. Image: Lockheed Martin.


SR-71 Spy Plane.

Will Congress Buy In?

Hypersonics are currently a hot category and a priority for Congress and the Department of Defense considering China’s recent FOAB test. That likely means if a project has the word hypersonic attached to it, the U.S. government will likely throw money at the SR-72. Skunk Works had much success with the original SR-71, it created a prototype in under two years. So, the Son of Blackbird could get approved and come to fruition. It would be an outstanding technological marvel. The Son of Blackbird could make its father, the SR-71, a proud papa.

1945’s new Defense and National Security Editor, Brent M. Eastwood, PhD, is the author of Humans, Machines, and Data: Future Trends in Warfare. He is an Emerging Threats expert and former U.S. Army Infantry officer.

Written By

Now serving as 1945s New Defense and National Security Editor, Brent M. Eastwood, PhD, is the author of Humans, Machines, and Data: Future Trends in Warfare. He is an Emerging Threats expert and former U.S. Army Infantry officer.



  1. Chris Cha

    February 4, 2022 at 10:27 pm

    So… If the SR-72 has a dual propulsion system, it shouldn’t need to be launched from another aircraft, and it shouldn’t have an issue landing (takeoff and land under standard turbine engine).

    Since the SR-72 is hypersonic, you don’t need it to launch a hypersonic missile. Just launch a standard missile when you’re close to target.

    As for stealth, who needs it when you can fly at Mach-6?

    I think directed energy weapons are the only real practical defense against hypersonic missiles or jets. And, even then you may need the short burst so-called quadrillionth-of-a-second laser burst. Step on the gas DoD!

  2. Plummer Locklear jr

    February 4, 2022 at 11:46 pm

    I learned during my SAC Security
    tour on Guam and Okinawa 1966’67’68
    working escort security for the
    Blackbird SR71,it is a weapon.
    Fly low and the concussion from the
    Speed and noise is deadly.

  3. ChrisM

    February 5, 2022 at 11:08 am

    You have to have a hypersonic weapon because launching at speed would shred a conventional weapon . Akin to a kite in a hurricane. Heat, turbulence, etc would overwhelm it quickly.

  4. alex cokonis

    February 5, 2022 at 3:27 pm

    Well that will adequately take care of the may be Chinese hypersonic crafts. Maybe the Chinese want to see what US comes up so they can copy it.

  5. J Rice

    February 5, 2022 at 5:37 pm

    One word… Heat

  6. Jim

    February 5, 2022 at 10:45 pm

    You LITERALLY misused the word LITERALLY. Do you literally not have editors or are you all literally uneducated.

Leave a Reply

Your email address will not be published. Required fields are marked *