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NASA asked several former SR-71A staffers to help secret restart

327 points · 403 comments · ilamont

walrus01 · 1790727565 · focus · HN ↗
I'd be more astonished if there isn't something superior to the SR71 (likely unmanned) that has been flying around at night from facilities like Groom Lake for years. Look at how long the RQ180 was flying around in semi-public and known about before it became seen in daylight by plane spotters in Greece. And a long time before that there were public relations approved photos of the Lockheed Martin Polecat.
There were a series of extremely public quotations from senior DoD officially recently about how they plan to aggressively retire the Global Hawk program (which is a mostly non stealth aircraft), reading between the lines it's because they have something much better.
edit: for those who haven't seen the RQ180: <a href="https://www.google.com/search?client=firefox-b-d&q=RQ180+greece" rel="nofollow">https://www.google.com/search?client=firefox-b-d&q=RQ180+gre...
edit 2 (apologies for the X link): <a href="https://x.com/MechDesignxyz/status/2041281689838584193" rel="nofollow">https://x.com/MechDesignxyz/status/2041281689838584193
1. hilsdev · 1790727775 · focus · HN ↗
  I suspect everything comparable of late has been orbital, which begs the question what is it they’re worried about with orbital? Satellite warfare is already accelerating if the rumors are true, is it that this is untouchable still? Is there some new camera sensor where eliminating that extra atmospheric diffraction or slowing down (lol) is needed?
  1. walrus01 · 1790727944 · focus · HN ↗
    I am sure that the orbital capabilities are also vastly improved from what the public has ever seen. But I think there's likely a high degree of tactical value in having something that can keep station over a certain active conflict area (as an RQ180 can, maybe flying in a racetrack pattern at altitude, with sensors aimed down).
    If you've ever seen the publicly released videos and audio of an RQ9 operator in communication with ground units watching the activity of a group of men/vehicles on the ground, in live real time, something like that.
    As compared to periodic revisits by LEO orbit satellites that don't maintain persistent live coverage, or the extreme distance and data acquisition problem that aiming sensors in geostationary orbit at a 10x10km target area might pose.
    crote · 1790760605 · focus · HN ↗
    The problem is that "can loiter over an area" and "SR71-like" are fundamental contradictions.
    The whole point of the SR71 is to be stupidly fast, to the point of being impossible to catch. It could outfly missiles, and the mission was done and over by the point anyone could scramble a proper defense. Have it fly circles over a target and you're negating its one main unique selling point.
    Want to loiter over a target? Use an RQ9. Want an impossible-to-stop snapshot camera? Use a satellite. So what's left for the SR71? I guess there are some missions where 1) you don't have air superiority, and 2) the target can hide in time from well-known satellite orbits, but 3) the target can't hide with 15-minute warning from a plane - but are those really common enough to justify the massive investment it'll take?
    walrus01 · 1790765109 · focus · HN ↗
    I was replying to a comment from a person who was talking about satellite ISR, referring to 'can loiter over an area' for why the RQ180 or similar exists and is used in certain tactical scenarios instead of satellite, not to justify some absurd reactivation of the SR71. Please read the comment I replied to and what I wrote again.
    The RQ9 is fine to loiter over and watch an area that has little to no air defenses, more stealthy things are needed if there's some form of credible air defense. There's a number of non faked photos of downed rq9 in yemen in the past couple years that were shot down by fairly basic air defense systems the Houthis acquired from Iran.
    mrguyorama · 1790780988 · focus · HN ↗
    >There's a number of non faked photos of downed rq9 in yemen in the past couple years that were shot down by fairly basic air defense systems the Houthis acquired from Iran
    We have confirmed the loss of like 40 reapers in Iran.
    mrguyorama · 1790780945 · focus · HN ↗
    Also the SR71 can barely loiter at all. It has a turning circle at altitude and speed of 80 miles

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