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

github.com

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

#81

Post by victorbjorklund »

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.

Evidence for the claim?

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

#82

Post by srean »

saati wrote: post #80
srean wrote: post #62

Earlier quoted context omitted.

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

Be that as it may, carpet bombing has a specific meaning, and it's not bombing one's not on board with.

In the context of Iran I agree with you.

Not so sure about South Lebanon. From whatever media coverage I saw, some look not that different from carpet bombing.

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

#83

Post by phplovesong »

Its scary that you can whip something like this in under 100 bucks. Add a small warhead and you got a small missile.

Like we see in Iran, with trumps idiotic war the US cant even protect its allies and own soldiers, even with a whopping 1.5 trillion budget.

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

#84

Post by the__alchemist »

redgridtactical wrote: post #13

The engineering is genuinely impressive for $96, but naming the repo "MANPADS-System-Launcher-and-Rocket" on GitHub is going to attract exactly the kind of attention you don't want. ITAR implications aside, the interesting part is the mid-flight trajectory recalculation on a $5 sensor. That's the same basic problem military guidance systems solve with hardware that costs thousands. The gap between consumer electronic…

> A few years ago this would have required an IMU that cost more than this entire build.

Are you sure about this? MEMS IMUs have been popular and cheap for ~10-15 years.

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

#85

Post by bragr »

shrubble wrote: post #69
redgridtactical wrote: post #13

The engineering is genuinely impressive for $96, but naming the repo "MANPADS-System-Launcher-and-Rocket" on GitHub is going to attract exactly the kind of attention you don't want. ITAR implications aside, the interesting part is the mid-flight trajectory recalculation on a $5 sensor. That's the same basic problem military guidance systems solve with hardware that costs thousands. The gap between consumer electronic…

Consumer GPS chips are specifically nerfed for using them in rockets; they give erroneous readings on purpose if altitude is above a certain height and/or if speeds exceed a certain speed. That’s likely why the mid-course correction software uses other methods.

The restrictions on GPS prevent ballistic missiles, not MANPADs. Typical limits are 515 m/s and 18,000 meters (try using your phone's GPS on a commercial flight, it works fine near a window). Update rate is probably the biggest issue with GPS and MANPADs.

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

#86

Post by srean »

victorbjorklund wrote: post #81
srean wrote: post #62

Earlier quoted context omitted.

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

Evidence for the claim?

https://share.google/aimode/CoVNoZcR3YOotyg5o

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

#87

Post by vidarh »

hrmtst93837 wrote: post #46
redgridtactical wrote: post #13

The engineering is genuinely impressive for $96, but naming the repo "MANPADS-System-Launcher-and-Rocket" on GitHub is going to attract exactly the kind of attention you don't want. ITAR implications aside, the interesting part is the mid-flight trajectory recalculation on a $5 sensor. That's the same basic problem military guidance systems solve with hardware that costs thousands. The gap between consumer electronic…

[flagged]

They should be sweating, because if the other side can fire 100 rockets for $10k that are close enough to not immediately and obviously be off target, and you don't know whether a more expensive one with actual explosives is hiding within that barrage, you now have 100 targets to try to intercept, and suddenly your costs have gone up dramatically while the other sides costs has barely moved.

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

#88

Post by tzury »

There are 2 short segments in the video showing the actual performance and thus far it is a complete [1] failure [2].

The guy has a talent, and he put together a nice prototype based on OpenRocket [3], but with all due respect, this is not a rocket, and you are not going to win any war with this toy, even if all your enemy has are rocks thrown at you from pretty much similar distance.

The remix of computer games / Ukraine / Martin Luther King / Vietnam / David Koresh just adding more to the amateur spirit and confusion.

[1] https://youtu.be/DDO2EvXyncE [2] https://youtu.be/DDO2EvXyncE?t=280 [3] https://openrocket.info/

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

#89

Post by phplovesong »

Mizza wrote: post #6

This is bonkers. Video on GitHub: https://www.youtube.com/watch?v=DDO2EvXyncE I'm impressed by the kid's engineering and gumption, but I think he's a bit.. misguided, if you'll pardon the pun. The video ends with shots of Russian drone war, and, bizarrely, photos of David Koresh. I don't think this ends well.

What started in Ukraine, this is modern warfare. Like most "consumer" goods that are mass produced, you can now get a capable strike force for peanuts.

The russians have taken close to 1.5 million casulties because ukraine engineering for cheap drones. Putin really, really f-ed up his "3 day military operation".

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