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-   -   Random Aerodynamic Oddity of the Day Thread (https://ecomodder.com/forum/showthread.php/random-aerodynamic-oddity-day-thread-35653.html)

kach22i 09-20-2017 03:04 PM

Random Aerodynamic Oddity of the Day Thread
 
Random Aerodynamic Oddity of the Day Thread

A thread to place some of the weird things you come across.

https://elpoderdelasgalaxias.wordpre...012/10/page/5/
https://elpoderdelasgalaxias.files.w...0/still072.jpg
Quote:

1936 H G Wells based movie “Things to Come”
I'm thinking such a helmet could be useful in a trike design or someplace where a really small canopy is too expensive or heavy to implement.

It was just too darn silly not to share. :)

Film
Things to Come (1936)
http://www.cageyfilms.com/2013/07/bl...-to-come-1936/
http://www.cageyfilms.com/wp-content.../things_13.jpg

Easier to pressurize a suit than an entire cockpit I guess.

https://www.pinterest.com/pin/415034921879688235/
https://i.pinimg.com/564x/49/68/61/4...dieselpunk.jpg

Remove the wings and you might get a road vehicle out of it.

People will be sure to get out of your way.

kach22i 09-20-2017 03:05 PM

2010
Silent Helicopter Blades

https://www.trendhunter.com/trends/blue-edge
http://forums.pelicanparts.com/uploa...1505250689.jpg
Quote:

Cutting down on the 'blade-vortex interaction' that causes the loudness of helicopters today, Blue Edge works with another technology called Blue Pulse to combat that phenomenon.

According to Gizmodo, by adding 3 flaps to the edge of the Blue Edge blade, they "move up and down at 15 to 40 times per second, using piezoelectric motors that also help to reduce the blade-vortex interaction."
Video in link above.

MetroMPG 09-20-2017 05:42 PM

Great thread idea. Subscribed and on the lookout.

kach22i 02-15-2018 01:27 PM

A wind tunnel and laser guidance helped the Olympic luge team learn about uniform tech
https://www.popsci.com/luge-wind-tun...MPID=ene021518
https://www.popsci.com/sites/popsci....zdBiW&fc=50,50
Quote:

The key piece of equipment at the San Diego Wind Tunnel is a 20-foot fan, powered by a 2,250 horsepower motor, that accelerates air up to 270 miles per hour. .....................

“We taught them some things about the fabrics that they were using,” he adds. To keep the person wearing the different suits in the same position and minimize variables, they used a laser guidance system, projecting the laser’s light onto a specific spot on the helmet.

freebeard 02-15-2018 05:49 PM

Can we include hydrodynamics? One of my current fascinations (as of 20180212) is the M-hulled M-80 pentamaran: Solution... Permalink #17

https://i0.wp.com/images.gizmag.com/...0206115319.jpg
https://oceanandairtechnology.wordpress.com/2010/08/20/stiletto-experimental-ship-with-carbon-fiber-m-hull-design-tops-50-knots-60mph/
(I guess it is compressing air in it's passive ram-jets) ...and it's surface-piercing (anti-cavitation?) propellers:

https://i0.wp.com/images.gizmag.com/...0206113458.jpg
[ibid]

Frank Lee 02-15-2018 07:50 PM

What could be more random or odd than the Ram Implosion Wing?

https://i.ytimg.com/vi/wydiormQQ50/maxresdefault.jpg

gumby79 02-16-2018 02:50 PM

Frebeard
Would it be better to spin the water opposite the prop kind of like running a stator Upstream of a fan to coach the incoming flow to be moving at a right angle to the direction it will be coming out of the fan improving it's forward bite on the air

freebeard 02-16-2018 03:25 PM

Frank Lee never forgets.

gumby79 — A Gurney flap or something? It would probably add more drag than thrust. I suspect the problem with anti-cavitating props is air bubbles eating the metal. Those flutes may be for vortex generation or something.

freebeard 02-22-2018 05:14 PM

Days on end without oddity? Bo-ring.

https://i.kinja-img.com/gawker-media...baqdnfppxw.png
https://jalopnik.com/i-bet-we-can-id...aun-1823206743

https://i.kinja-img.com/gawker-media...jjvz8pxvkj.gif
https://jalopnik.com/too-low-drone-o...ves-1796065245

kach22i 04-20-2018 11:06 AM

I found something odd, and if all "fluid dynamics" are fair game then explain the advantage of the gap/slot before the movable portion of the rudder.

MORE random pics...... - Page 4443 - Pelican Parts Technical BBS
http://forums.pelicanparts.com/uploa...1524228259.jpg

I have an idea or two but want to see if it matches anyone else's ideas.


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