SR-72: US secret hypersonic jet to allegedly break sound barrier in 2025
interestingengineering.com
Widely reported as the fastest plane ever developed, Lockheed Martin's SR-72 "Son of Blackbird" will test the claim sometime in 2025.

SR-72: US secret hypersonic jet to allegedly break sound barrier in 2025 | Believed to be a top-secret project of the US Air Force, the SR-72 is touted to reach over 4,000 mph (6,437 kph), making i…::undefined

  • LilDumpy@lemmy.worldEnglish
    162·
    9 个月前

    Why does it take one year for this plane to warm up before it breaks the sound barrier? Aren’t there planes that already break the sound barrier in minutes/seconds and not take years?

    • CaptainSpaceman@lemmy.worldEnglish
      10·
      9 个月前

      The speed of sound is roughly 750mph

      This plane goes 4000mph. Thats like Mach 6 right?

      Edit: looks like SR71 still holds the record for now at Mach 3.5 or around 2000mph

      • grue@lemmy.worldEnglish
        7·
        9 个月前

        Edit: looks like SR71 still holds the record for now

        The unclassified record, sure.

          • grue@lemmy.worldEnglish
            2·
            9 个月前

            I don’t believe for a second that the Air Force hasn’t built something faster than the SR-71 in forty years, but I do believe they wouldn’t have told us about it.

    • Tylerdurdon@lemmy.worldEnglish
      9·
      9 个月前

      I think the speed is more in regard to the capability to go into space. From what I remember, the SR71 was easily fast enough to go, but the limit was atmosphere (engines). If they could get something into space that could come back as a single unit (needing just a refuel), it could change a lot. Total speculation though, it’s probably just super fast so it can go destroy other humans super good, because that’s super important.

    • Person264@lemmings.worldEnglish
      3·
      9 个月前

      They’ll test it on the ground and flying slowly first before going fast to make sure it’s safe enough.