Very impressive. I assume that underwater propulsion uses a lot more energy per meter moved?
Hybrid Aerial Underwater Drone – Bachelor Project [video]
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Re: Hybrid Aerial Underwater Drone – Bachelor Project [video]
#12Maybe you will be able to use these to defend Greenland?
Re: Hybrid Aerial Underwater Drone – Bachelor Project [video]
#13The manhunt from a drone becomes more of a nightmare.
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Re: Hybrid Aerial Underwater Drone – Bachelor Project [video]
#14It's interesting how simple this looks, off the shelf parts, and 3D printed components. I'm almost surprised this doesn't already exist after looking at it.
> I'm almost surprised this doesn't already exist after looking at it.
What's the use case? We have very good dedicated aerial drones and very good dedicated submarine drones. If something is technically possible but no one makes it usually it means it's not that interesting
Re: Hybrid Aerial Underwater Drone – Bachelor Project [video]
#15It's interesting how simple this looks, off the shelf parts, and 3D printed components. I'm almost surprised this doesn't already exist after looking at it.
> I'm almost surprised this doesn't already exist after looking at it. What's the use case? We have very good dedicated aerial drones and very good dedicated submarine drones. If something is technically possible but no one makes it usually it means it's not that interesting
If your mothership is low-observable/submersible you could park it in a harbor and when time is right unleash a swarm of hybrid aerial underwater drones with mission payload.
This design uses 1 swashplate server plus 1 brushless drive motor for each prop for a total of 8 motors. Designs in Ukraine are now using 1 brushless drive motor to synchronously drive all 4 props and 1 swashplate servo each prop, reducing total number of motors to 5, which might be a natural path of optimization for this type of hybrid aerial underwater?
Re: Hybrid Aerial Underwater Drone – Bachelor Project [video]
#16Earlier quoted context omitted.
If this what can be done with off the shelf parts and 3D printing, imagine what DARPA and the like have been doing for the past 20 years. Makes the UFO/UAP stories about "it transitioned from the water to the air and back to the water!!" seem way more plausible.
> imagine what DARPA and the like have been doing for the past 20 years. People always say this, but anyone I know who's ever worked in one of these companies that contracts for the DoD or DARPA always complains about how behind the market government tech is. Obviously private industry isn't producing competitors to the F35, but for less complicated kit the government doesn't seem to be doing anything super sophistic…
> In fact a bunch of people I knew who went to Iraq bought supplemental gear on the private market.
Like, photography gear?
Re: Hybrid Aerial Underwater Drone – Bachelor Project [video]
#17It's interesting how simple this looks, off the shelf parts, and 3D printed components. I'm almost surprised this doesn't already exist after looking at it.
I feel like I've seen some of these before without the variable pitch part
Re: Hybrid Aerial Underwater Drone – Bachelor Project [video]
#18Very impressive. I assume that underwater propulsion uses a lot more energy per meter moved?
that is the thing here. While the project is cool, the drone's underwater drag is very high, while typical such drone of that size is foldable, and thus one can fold it (even if a bit, Star Wars X-wing style) to decrease drag and use say only one or two motors with much greater efficiency as result. Though high speed drone like this https://www.youtube.com/watch?v=7PTsHDFMams may be ok without collapsing.
Re: Hybrid Aerial Underwater Drone – Bachelor Project [video]
#19The manhunt from a drone becomes more of a nightmare.
in some sense it isn't nightnmare, it is already a reality, just non-uniformly distributed. Sounds like you just haven't watched hours of footage from Ukraine. The drones there - in the 10-30km zone from the frontline - are onmnipresent like birds, just the birds of the killing-humans-on-sight kind (and with IR cameras it is 24x7, at night it is even more effective as you don't see it coming, only hear a slight buzz of the props, while the drone sees a warm human even better at night, like a kind of a flying rattlesnake :).
Unprepared NK soldiers in Ukraine facing drones first time https://youtu.be/9BQKfSHqRDk?t=117
Re: Hybrid Aerial Underwater Drone – Bachelor Project [video]
#20As an undergrad project this is rather impressive. But those motors do not look very water resistant. We all know that that shape and those blades are not very efficient in the water. And as others mention the RF signal probably cuts out at a few meters (probably worse in salt water).