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Drones that can haul a 20-pound load for 500 miles and land on a moving target

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Re: Drones that can haul a 20-pound load for 500 miles and land on a moving target

#41
post #5

Earlier quoted context omitted.

The technology world progresses as an arms race. I'm quite sure that when these things are used to traffic drugs, a small version of [0] will be used to stop them. [0] https://motherboard.vice.com/en_us/article/neqvag/the-us-nav...

Heh, that's cute. The issue with that is that locating UAV's that are, say 50 meters above the deck, more than 1km from your detector is essentially impossible. Without a VERY dense detection infrastructure, catching these things is not going to happen. Furthermore even though these lasers are very cheap, by army norms, to fire, they're still 600$ or so for a single shot. So shooting down drones will be expensive. Fa…

> Without a VERY dense detection infrastructure, catching these things is not going to happen.

Not really, Where it matters, radars have been deployed that can easily find those things. I've seen live demonstrations in the mid 1980s (as in, a system protecting borders), and I bet the state of the art has advanced since then. IIRC it was a SAR system, but I'm not sure.

> Furthermore even though these lasers are very cheap, by army norms, to fire, they're still 600$ or so for a single shot. So shooting down drones will be expensive. Far more expensive than the drones themselves.

There are newer, weaker versions that are at ~$1/shot, that would still likely take down your average drone. Also, even $600 is not "far more" expensive than a modern drone that can carry things across the border; It is slightly more expensive, but (relatively speaking), super cheap and, since it is energy, fungible (that is, you don't spend it until you spend it, unlike e.g. missiles which have to be ready long beforehand)

> Defense against a laser is easy (a mirror, essentially, though you need to know the frequency to get an effective one). I must say that I don't know why you'd try to defend a drone. I'd try to hide it, since that's so easy.

That's the popular belief, but it is not actually true. A perfect mirror such as would be required would cost today significantly more than the drone itself, as in x10 to x100, if it is at all feasible (You can't have sharp edges, you likely need glass).

It is currently infeasible to mirror-cover missiles or rockets that cost a lot more than the drone, and the problems are (mostly) not about the projectile speed or heat.

> And while a rules-based autopilot is easy to disrupt using jamming, a learned autopilot is essentially impossible to fool into crashing. Maybe you can divert it, I guess.

Lasers can blind cameras even better than they do human eyes. What sensors is this autopilot going to depend on when it is vision and GPS blinded?

Re: Drones that can haul a 20-pound load for 500 miles and land on a moving target

#42
post #3

It makes me happy to see that people are venturing out and building something that takes longer and has a higher failure rate that web apps/software.

The man who gets the most press in the tech community is trying to launch rockets to Mars and build electric supercars and networks that cost ludicrous amounts of money. Whether you think these ideas are any good or not, people are doing large things in our society. It ain't all web apps.

YIL about https://en.wikipedia.org/wiki/Cyrus_West_Field

Re: Drones that can haul a 20-pound load for 500 miles and land on a moving target

#43
post #4

Fine and dandy when flying over a desert but when the drone meets the city and an "autopilot" failure occurs over a freeway/highway/street or someone's head the consequences will be unforgivable.

I don't get that. Before the sun rises tomorrow, for the US alone, 32 Americans will make a mistake with their car that kills someone (potentially, but unlikely, themselves, 2 will kill themselves, 29 will kill someone else, one will kill 2 others, for a total of 33 deaths). At the same time, a further 2000 Americans will injure someone with a car, and another 3000 will cause severe (I believe > 1000$) property damag…

Don't you have a score system? It has a noticeable effect, that probably happens by taking the insane drivers off the road.

You start with ten points that you lose with infractions, more points for more serious ones. If you run out of points, you don't drive or face jail.

Re: Drones that can haul a 20-pound load for 500 miles and land on a moving target

#45
post #20

Earlier quoted context omitted.

Jamming drones is easier than you think, the new battleground will be autonomous flying to avoid trivial radio/gps jamming. MIT has open source code for this already. https://www.youtube.com/watch?v=_qah8oIzCwk https://github.com/andybarry/flight

I'm no expert but how autonomous works if there's no positioning methods involved? (To avoid GPS/GLONASS,... Jamming)

Cruise missiles have an optical terrain-following system, that would be a viable approach for drones.

Re: Drones that can haul a 20-pound load for 500 miles and land on a moving target

#46
post #14

Earlier quoted context omitted.

A 20lb weight can kill a person from a far lower altitude than a parachute could meaningfully slow its descent. Parachutes aren’t magic.

Helicopters also have this "death zone" where an engine failure would not allow them to autorotate and have a controlled landing. And helicopters are a lot bigger and heavier.

Mosr cities don't have thousands of helicopters zipping by autonomously above our heads.

Re: Drones that can haul a 20-pound load for 500 miles and land on a moving target

#48

What 20 pound load could have saved the Titanic? Why wouldn't such a miraculous tool or part have been brought aboard already as a precaution?

Binoculars.

or coffee for the watchers :)

Re: Drones that can haul a 20-pound load for 500 miles and land on a moving target

#49
post #20

Earlier quoted context omitted.

Jamming drones is easier than you think, the new battleground will be autonomous flying to avoid trivial radio/gps jamming. MIT has open source code for this already. https://www.youtube.com/watch?v=_qah8oIzCwk https://github.com/andybarry/flight

I'm no expert but how autonomous works if there's no positioning methods involved? (To avoid GPS/GLONASS,... Jamming)

Inertial navigation and maps.

Re: Drones that can haul a 20-pound load for 500 miles and land on a moving target

#50

Earlier quoted context omitted.

The man who gets the most press in the tech community is trying to launch rockets to Mars and build electric supercars and networks that cost ludicrous amounts of money. Whether you think these ideas are any good or not, people are doing large things in our society. It ain't all web apps.

He did start with web apps though (PayPal).

Well, zip2 then x.com then PayPal. Also sold some program when he was 12 pre the web. Here's some video of him after the zip2 sale https://www.youtube.com/watch?v=ZHKT3yxYvDQ
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