Earlier quoted context omitted.
Harder to do at range. I'm glad I'm not the Secret Service. A drone swarm has to be rapidly becoming one of their scary scenarios for something like inaugurations.
A single medium-caliber mortar is a five-hundred-year-old piece of technology that can be carried and assembled by two men, has an effective range of ~1,000 to 5,000 yards, does not require line of sight to the target, can be operated by a high-school dropout, and has a kill radius of 30 meters . One can probably be picked up from an army surplus warehouse somewhere in the former Soviet Union/(some current conflict z…
Bug drone for UK army that weights 196g, has 40 mins autonomy and 2km range
111–120 of 188 posts
Re: Bug drone for UK army that weights 196g, has 40 mins autonomy and 2km range
#112I work with nano-UAVs. I am very skeptical that the 40 minute flight time is even close to being real. Especially with a quadcopter design. They are way to inefficient.
Given cost is not a problem, is it possible to get 40m flying time using exotic battery and ultra high strength/weight ratio materials?
I feel like the cost is deeply embedded in our psyche and people are comparing a military nano drone with DJI mini2 with entirely different engineering envelopes to work in.
DJI mini2 is made in thousands if not millions of quantities. There is so much cost optimizing. Even turning a part around is optimized because that’s more time to assemble.
Re: Bug drone for UK army that weights 196g, has 40 mins autonomy and 2km range
#113Earlier quoted context omitted.
It's hard to express how awesome the Mini is. IMO it's an underappreciated technological achievement at the once-in-a-hundred-years level. Only a few years ago, it was hard to get a decent digital camera for $400 and change. The Mini is a decent camera that also happens to fly. When that realization hit me, it reminded me of the first time I saw a $29 DVD player for sale at WalMart. Some incredible things had to happ…
I have to concur. I built many drones with 400$+ flight controllers that look like trash next to my mini 2.
Re: Bug drone for UK army that weights 196g, has 40 mins autonomy and 2km range
#114All I need now is a phone app that would make it easy to browse the tiles shot by the drone (rather than rewind video back and forth).
Any suggestions?
Re: Bug drone for UK army that weights 196g, has 40 mins autonomy and 2km range
#115I’ve been meaning to procure a drone to scout best trails before hiking them, and DJI mini 2 seem ideal for the purpose. All I need now is a phone app that would make it easy to browse the tiles shot by the drone (rather than rewind video back and forth). Any suggestions?
Re: Bug drone for UK army that weights 196g, has 40 mins autonomy and 2km range
#116Hmm...from a tech porn perspective it’s a cool little gadget. But given the shadow surveillance and police state that was erected post 9/11 and how often “national security” outfits have been caught playing fast and loose with the laws of the land, there is a good chance that bugs like this one will be eventually be used to illegally spy on domestic dissidents and whistleblowers. Governments in most western countries…
There's "oh no our liberties" but that train came and went and this particular device has nothing to do with it.
Re: Bug drone for UK army that weights 196g, has 40 mins autonomy and 2km range
#117Earlier quoted context omitted.
I haven't looked into this drone in depth, but I think it may be feasible. The DJI Mini2, which any civilian can buy for $449, has a similar size, weighs 249g, and advertises a flight time of 30 minutes. (In my experience with the Mini 1, it's plausible). Side note: the DJI Mini 1 is an excellent drone -- stable flight, great camera, and great range. I wouldn't be surprised if it outperforms this 'Bug' drone by most…
It's hard to express how awesome the Mini is. IMO it's an underappreciated technological achievement at the once-in-a-hundred-years level. Only a few years ago, it was hard to get a decent digital camera for $400 and change. The Mini is a decent camera that also happens to fly. When that realization hit me, it reminded me of the first time I saw a $29 DVD player for sale at WalMart. Some incredible things had to happ…
I flew mine today in -15ºC for 35 minutes, and managed a range of 3km.
It's crazy.
Re: Bug drone for UK army that weights 196g, has 40 mins autonomy and 2km range
#118I work with nano-UAVs. I am very skeptical that the 40 minute flight time is even close to being real. Especially with a quadcopter design. They are way to inefficient.
That's because of the energy density (per mass) of Li-Ion batteries. You basically hit a wall at 20 minutes that's very hard to push past (it almost feels like a law of physics). But maybe they're using non-rechargeable batteries: zinc-air or lithium-iron-disulfide (ie. a 'lithium' AA battery) or something else? Trade offs are different for military.
But it will just be off the shelf batteries, so they would exist already on ebay if that's what they are doing.
Re: Bug drone for UK army that weights 196g, has 40 mins autonomy and 2km range
#119Hmm...from a tech porn perspective it’s a cool little gadget. But given the shadow surveillance and police state that was erected post 9/11 and how often “national security” outfits have been caught playing fast and loose with the laws of the land, there is a good chance that bugs like this one will be eventually be used to illegally spy on domestic dissidents and whistleblowers. Governments in most western countries…
This is just ridiculous. Why if you were going to illegally spy on people would you use a highly visible and noisy drone when the vast majority of the population live in urban areas where CCTV cameras are common and phone lines conveniently run out to steel covers in the streets (and the entire population is carrying GPS enabled tracking devices full of security flaws?) There's "oh no our liberties" but that train ca…
Re: Bug drone for UK army that weights 196g, has 40 mins autonomy and 2km range
#120Earlier quoted context omitted.
They're claiming flight time - in the battery section of the infographic it claims "flight times of more than 40 minutes". Tri-blade props are not the most efficient - we use them in racing applications because we want to generate maximum thrust and we don't need more than around 2-3 minutes per battery but we wouldn't use them in an aerial photo rig where we want long flight times - 2 blade props would be the go to.…
Since you seem to have some expertise in this area, I am going to use the opportunity to ask a bit of a diagonal question I've wondered for a while: I've seen claims about increase in airflow from bladeless fan designs (I know it's a bit of misnomer, as the blades are just hidden) for home applications. Is there a reason bladeless designs haven't been used in the UAV realm? I assumed the claims were just marketing, o…