Hyundais 2024 new ACTIVE AIR SKIRT

[kach22i]

Originally Posted by Phase

...Seems like a lot of moving parts and mechanical costs for something that could always be installed.

https://newatlas.com/automotive/hyun...ive-air-skirt/

I did not know spats/deflectors were important enough to warrant such attention and financial resources.

Hey, the New Atlas website is awesome, thank you for sharing.

That site lead me to start a post elsewhere on the topic of biomimetic electric outboards.

https://www.boatdesign.net/threads/f...eatures.68717/

[freebeard]

Originally Posted by aerohead

The Interstate Highway System is designed for 100-mph travel.

Maybe in theory. In practice there is one spot North of Salem, OR on I-5 Southbound that's out of spec.

The FinX is very interesting.
newatlas.com/marine/finx-biomimetic-electric-outboard/
www.boatnews.com/story/44356/finx-test-fin5-a-propellerless-electric-outboard-motor

What they don't mention is that it uses a Coanda Nozzle. The two membrane version, for heavier vessels, seems less straigthforward. Maybe employs vortex streets?

Don't know about the company's outboards, but their videos are top-notch.

Find out how our living-inspired motor is assembled in France!

..or industrial porn, depending on your point of view.

The only other biomimetic boat propulsion I'm aware of it R. B. Fuller's Mechanical jellyfish.

http://3.bp.blogspot.com/_snptbTw3yB...+jellyfish.JPG
http://klbuckyians.blogspot.com/2009...jellyfish.html

[Phase]

Originally Posted by kach22i

I did not know spats/deflectors were important enough to warrant such attention and financial resources.

Hey, the New Atlas website is awesome, thank you for sharing.

That site lead me to start a post elsewhere on the topic of biomimetic electric outboards.

https://www.boatdesign.net/threads/f...eatures.68717/

Makes me think I should rebuild one of my rear wheel deflectors that broke off my car years ago. Haven’t put much effort into it in a car that gets 60 mpg already but maybe it’s important

[aerohead]

* I'm not seeing any connection to dolphins.
* It's 'reciprocal' motion, rather than 'rotary.'
* It appears to 'borrow' heavily from Dyson's 'bladeless fan.'
* The supporting strut is hydrodynamically 'dirty.'
* The toroid itself is hydrodynamically 'dirty'.
* A back-to-back comparison to an equivalent energy consuming 'Minnkota'-esque electric trolling motor would be instructive.
There's no context in their 'comparison' which would suggest any advantage as far as thrust-per-kWh ratio.
* Third-party testing / benchmarking.

[freebeard]

* It appears to 'borrow' heavily from Dyson's 'bladeless fan.'

Jetoptera also.

* A back-to-back comparison to an equivalent energy consuming 'Minnkota'-esque electric trolling motor would be instructive.

The only comparison I saw was 'good torque but low top speed.

Explainers in the dedicated thread.

[aerohead]

Originally Posted by freebeard

Jetoptera also.The only comparison I saw was 'good torque but low top speed.

Explainers in the dedicated thread.

'Torque' is a conceptualization associated with 'force at a distance,' and typically associated with rotary motion.
The FinX imparts it's energy to the water column as a 'cyclic-pulsed water jet reaction force', unlike direct fluid coupling of a propeller, of some known mechanical efficiency, with it's surface boundary acting against the contacting fluid interface.
'Torque' seems like a weird attribute to assign to what FinX does.