this post was submitted on 29 Sep 2026
559 points (97.3% liked)
Technology
88390 readers
4713 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related news or articles.
- Be excellent to each other!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, this includes using AI responses and summaries. To ask if your bot can be added please contact a mod.
- Check for duplicates before posting, duplicates may be removed
- Accounts 7 days and younger will have their posts automatically removed.
Approved Bots
founded 3 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
It's not a fighter, the SR71 is totally unarmed. The SR stands for Stealth Reconnaissance.
Close but not quite, it stands for strategic reconnaissance. It's not stealth. Stealth technology didn't come into existence until the late 80s early 90s
But what if we repurposed it to stand for Scientific Research instead? 🤔
Why stop there? SR could stand for Shaky Rimjob.
It was actually originally designed to have two different versions, one for each role. But the fighter version was scrapped, and only the recon version went into actual production.
Kind of a shame, really. It would make a really badass fighter. More of an 'interceptor' maybe? -- because it's definitely not going to be doing any dogfighting. Then again, maybe 'interceptor' isn't the right word either, because it takes a long time to get one off the ground and you'd never be scrambling them in an emergency to intercept enemy planes. But once in the air and at speed, it would be able to outrun and catch any enemy plane, and it could be practically untouchable because it could simply outrun any missiles or even bullets fired at it.
I think the closest comparison to what it would be best for is basically air cavalry. Dive in at high speed for a devastating hit-and-run, and then do it again
It would probably be a missle platform.
Probably had the Phoenix missle or similar range weapon in mind for air to air.
Im not sure it flies slow enough for a gun to work properly.
https://en.wikipedia.org/wiki/Lockheed_YF-12
When at top speed, yeah, traditional guns wouldn't work well. You could still shoot, sure, but the bullets would quickly be slowed down by air resistance, while the aircraft keeps flying ... there could be a very real danger of overtaking your own bullets and hitting them from behind. The relative speed wouldn't be very high, so they probably wouldn't do much damage on impact, but they could do a lot of damage if one of the engines ingests one, so still a bad idea.
But when at top speed, it's already traveling faster than most bullets. At that point, you don't need a 'gun' anymore. Just drop some inert projectiles while doing your flyby, and those projectiles will hit your target with the force of bullets.
Would have been funny to put in a tail gun.
Sure, if it had any payload capacity. But it doesn't.
Getting a machine up to that speed is hard, real hard. The margins are extremely small. So the moment you start adding additional moving parts to it, opening payload bays, weapons release mechanisms, a few 400 lb missiles... And don't forget, all those additional components also take up additional volume, higher volume means more air displacement, which means more drag. Higher volume also means the area of the airframe gets larger, that means additional mass.
All of a sudden, that plane can't hit mach 3 anymore and you don't actually have an untouchable weapons delivery system anymore.
This is probably why a combat version of the aircraft was abandoned, it doesn't really make sense.
I was mostly going for a !noncredibledefense@sh.itjust.works thing tbh, because of exactly what you were saying
It’s probably terrible at dogfights though.
Modern fighters don't really do dogfights anymore.
Today's air-to-air engagements are usually just a matter of launching a missile at the other plane, usually from so far away that they're beyond the horizon. And in that kind of engagement, there are two things that determine which combatant is more effective: speed and range. SR-71 brings the ultimate in speed to the equation, now it just needs some good, long-range missiles.
Stealth and detection play a big part too. Can't target what your sensors can't see.
A bomber interceptor is the role that comes to mind for me, a Blackbird could climb to altitude and intercept any bomber aircraft heading to the USA. I suspect the invention of the ICBM put a stop to that though.
This is the internet. Don't be coming round here stating facts that aren't true.
It was originally the RS-71, for "reconnaissance/strike". (source)
Also, don't forget about the closely-related YF-12 interceptor.
Yeah that's the important part for sure. 🙄