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$96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor

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Re: $96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor

#331

Post by einpoklum »

mda wrote: post #276
einpoklum wrote: post #48

Earlier quoted context omitted.

I am completely against the US-Israeli war on Iran. That said, they are not carpet-bombing Iran. That is, they appear to be selecting individual targets rather than engaging in carpet bombing entire areas: https://en.wikipedia.org/wiki/Carpet_bombing The choice of targets is not legally legitimate (and the entire campaign is illegal AFAICT), and sometimes they used old/invalid intel, like what happened with that girl…

[flagged]

Yes, they have shown that. I don't understand your question about my "line", you'll need to be more explicit.

Re: $96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor

#332

Post by giantg2 »

oofbey wrote: post #188
giantg2 wrote: post #185

Earlier quoted context omitted.

"and you are not going to win any war with this toy, even if all your enemy has are rocks thrown at you" I don't want to use it for war. I think it would be a pretty cool technical project (if it works).

This design is pretty clearly optimized for weaponry. Eg the foldable fins - necessary if you want to keep a magazine of these things stored compactly before firing. Totally unnecessary for funsies. What nonviolent application are you imagining for a gps-guided rocket that is launched by pulling a gun trigger on a hand held mount?

Launching model rockets with a controlled landing (less likelihood of property damage or fires). Learning about the components. Folding fins make it easier to transport without snapping one (hopefully). Trigger vs button launch isn't that big of deal, although might have better safety options compared to standard model rocket launch buttons.

Re: $96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor

#333

Post by einpoklum »

srean wrote: post #62
einpoklum wrote: post #48

Earlier quoted context omitted.

I am completely against the US-Israeli war on Iran. That said, they are not carpet-bombing Iran. That is, they appear to be selecting individual targets rather than engaging in carpet bombing entire areas: https://en.wikipedia.org/wiki/Carpet_bombing The choice of targets is not legally legitimate (and the entire campaign is illegal AFAICT), and sometimes they used old/invalid intel, like what happened with that girl…

They are using white phosphorus on populated areas in South Lebanon. That's as vile as one can get.

Indeed, Israel and the US are quite vile. I have said so many times on placard which have then been ripped apart by the Israeli police. I only made a comment about the term "carpet bombing", as that is a specific term which means something else than "wide-scale bombing".

Re: $96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor

#334

Post by esseph »

dgroshev wrote: post #320
esseph wrote: post #309

Earlier quoted context omitted.

> Iran's neighbours would need to intercept only a handful of drones, which is hardly an insurmountable challenge. It's a big challenge when you run out of interceptors...

We're absolutely not running out of APKWS. They are manufactured by tens of thousands, and Hydra 70s are even more numerous.

APKWS is great for certain drone classes, but we don't enough enough launching systems tied to detection and targeting systems fielded.

Need more range for larger drones.

Re: $96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor

#335

Post by bigiain »

dgroshev wrote: post #329
Animats wrote: post #324

Earlier quoted context omitted.

Shelf life doesn't matter if you are firing them as quickly as you can make them, especially if you actually can make them as quickly as you need them because they're so simple. Right. High-volume users can skip the thermal batteries with decades-long shelf life, and just spot-weld a few AAA batteries inside the weapon. Just stencil the thing "Best if used by DATE". Good for a year or two at least. Skip the anti-corr…

AAA batteries don't have the current. Li-Ion is too fussy and has a pretty high self-discharge. Ukraine can afford the cardboard boxes because they are fighting in their own country. The US has an ocean to cross. Ukraine can get away with short shelf life because they are at war right now . The US has to stockpile because the supply chain has to run at some capacity in peace time to be able to ramp up quickly when ne…

> AAA batteries don't have the current.

Triple As might not, but back in the day plenty of rc planes flew just fine for an hour or three using 4 AA batteries to run the receiver and servos..

Re: $96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor

#336

Post by thombat »

FrojoS wrote: post #246
echoangle wrote: post #166

Earlier quoted context omitted.

And also the attacker can send 100 drones without any real targeting at all and 10 proper expensive drones and you need to send up 110 defenders which need to be able to track flying drones. Being the attacker will always be easier.

The good old "The Bomber always gets through" debate from 1932. https://en.wikipedia.org/wiki/The_bomber_will_always_get_thr...

He wasn't wrong in that claim: for the most part the bombers did get through, especially at night. The problem was that their effectiveness once "through" was far lower than the bombing proponents had claimed, due in particular to the lack of precision, but also the resilience of both targets and the enemy population.

Re: $96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor

#337

Post by inglor_cz »

srean wrote: post #245
ralferoo wrote: post #238

I remember an anecdote our robotics lecturer told our university class in 1995, which was about how in the west we try to make expensive things that are the absolute best of technology and how the other side didn't have that luxury and relied on ingenuity. He described a cold war Russian missile they had somehow obtained and were tasked with trying to reverse engineer. Ostensibly, it was thought to be a heat seeking…

Strike a light in front of a parked but otherwise active fin guided heat-seeker and its freaky to watch it come alive like a lazy beagle eyeing a treat.

Is there a video of that on YT?

Re: $96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor

#338

Post by koshergweilo »

mda wrote: post #277
vidarh wrote: post #156

Earlier quoted context omitted.

They did not defend it or make excuses for it. They argued about the very specific claim of carpet bombing in Iran , before pointing out the entire campaign is illlegal and calling the choice of targets "not legally legitimate". They also said nothing about Gaza. I share your concern about both Gaza and Iran, but criticising people for calling out an exaggeration is not helping anyone.

"Ah look but they haven't carped bombed Iran" was their argument and it sounds really weird.

That was not their argument at all. Their argument was that we're not carpet bombing Iran.

They're quite explicit that they're on your side, why question their motivations?

Re: $96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor

#340

Post by koshergweilo »

jacquesm wrote: post #162
niemandhier wrote: post #93

Earlier quoted context omitted.

My understanding is that for the civilians in Ukraine Shaheed style drones are the danger.

They are but the Ukrainians are making some serious inroads into the effectiveness of those drones and if they keep that up for a little while longer they will have near perfect ability to shoot them down. Essentially they've built hunter-killer drones that are sent off in the general direction of Shahed that then either succeed or fail in their mission. That success rate has been very steadily climbing over the last…

Ah that puts into context some of the headlines I've seen about Ukraine making arms deals with other countries.

https://english.kyodonews.net/articles/-/72301

It is very odd to see the defense industry live up to its name for once

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