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This is a link post Who else wants a Tandem-Duct Aerial Demonstrator?
*throws money at screen etc*
(, Wed 22 Aug 2012, 8:18, Reply)
This is a normal post
Not me as i'm guessing the video not having any sound means it's REALLY, REALLY LOUD!!!!
(, Wed 22 Aug 2012, 8:32, Reply)
This is a normal post Thought this myself....
there again, shooting all the refuse at passers by as you fly down the street cancels that one out.
(, Wed 22 Aug 2012, 8:35, Reply)
This is a normal post You say that like it's a bad thing.
Come on, we're one step closer to this....
www.youtube.com/watch?v=eXzn40Na_O0&feature=player_detailpage#t=46s
(, Wed 22 Aug 2012, 8:37, Reply)
This is a normal post Oh god yes!
I would have 12 points within 3 minutes of driving one of those though
(, Wed 22 Aug 2012, 10:27, Reply)
This is a normal post 12 points? Luxury
I passed only last year if I get 6 points I loose my license.

Driving a hundred miles a day presents plenty of point gathering opportunities too.
(, Wed 22 Aug 2012, 12:21, Reply)
This is a normal post Here's a top tip:
Try not to drive like a nob, and follow instructions given on roadside signs.
(, Wed 22 Aug 2012, 13:12, Reply)
This is a normal post Oh I do

(, Wed 22 Aug 2012, 13:43, Reply)
This is a normal post *vomits blood*

(, Wed 22 Aug 2012, 14:18, Reply)
This is a normal post *uses tabby's vomity blood as wank lube*

(, Wed 22 Aug 2012, 14:49, Reply)
This is a normal post Notwithstanding what DotB said,
YES, PLEASE!
(, Wed 22 Aug 2012, 8:42, Reply)
This is a normal post I had been quite excited by this
but the video makes me less so. Unless they can get it out of ground effect its nothing more than a hovercraft.
(, Wed 22 Aug 2012, 8:44, Reply)
This is a normal post I'm speaking out of partial ignorance here
but does this not work on different principles? i.e. it lacks a "skirt" (or trousers for that matter)
(, Wed 22 Aug 2012, 9:03, Reply)
This is a normal post The ground effect will still be creating a cushion of air
the difference here is that there's no skirt trapping that air, therefore it requires much greater power to achieve the same result.
(, Wed 22 Aug 2012, 9:08, Reply)
This is a normal post ahh, ta

(, Wed 22 Aug 2012, 9:47, Reply)
This is a normal post The skirt of a hovercraft
just serves to contain and thus increase the air pressure below the vehicle, but the same effect can be achieved without one.

However, the vehicle above isn't using ground effect -- that requires a wing or other aerodynamic surface in order to be generated.
(, Wed 22 Aug 2012, 9:18, Reply)
This is a normal post Like the ekranoplan
Clarity!: en.wikipedia.org/wiki/Ground_effect_vehicle
(, Wed 22 Aug 2012, 10:37, Reply)
This is a normal post This may be of interest to you then
englishrussia.com/2010/03/12/ekranoplan/
(, Wed 22 Aug 2012, 10:40, Reply)
This is a normal post I love me some ekranoplan!
That Lun-class one reawakens my inner 10 year old...the one that used to get books about military aircraft out from the library every fortnight.
(, Wed 22 Aug 2012, 10:54, Reply)
This is a normal post Genuinely awesome.
Needs a video game built around it.
(, Wed 22 Aug 2012, 11:56, Reply)
This is a normal post As someone who has tried to hover a helicopter
I can assure you that they most certainly do experience ground effect, and therefore so will this.

And what's a rotor blade if not a wing or other aerodynamic surface? It is best thought of as a wing that is being forced through the air by an engine rather than by the forward motion of the vehicle.
(, Wed 22 Aug 2012, 11:39, Reply)
This is a normal post A helicopter's rotor blades are indeed wings,
creating lift from the pressure differential between the top and bottom of the blades as they move through the air. They do indeed experience the ground effect, where the pressure below the blade is increased due to proximity to the ground.

Hovercraft and the vehicle in the OP work on a different principle, using fans to create a cushion of high pressure air below the vehicle. The ground effect plays little to no part in that situation.
(, Wed 22 Aug 2012, 13:26, Reply)
This is a normal post I don't see what you're arguing
Your first point agrees with what I said, and your second flat contradicts your first.

The fans are nothing more than ducted rotors - the duct improving the efficiency of the rotors. Ground effect is nothing more than a high-pressure zone of air caused by proximity to the ground - as you yourself said. It is clearly important for hovercraft and as evidence for this, ask yourself why hovercraft can't fly like helicopters.

As to my original point, right at the top of this thread - this vehicle is clearly operating in ground effect. Until they can make it operate out of ground effect they've achieved nothing novel other than a hovercraft with excessive power requirements.
(, Wed 22 Aug 2012, 14:06, Reply)
This is a normal post A hovercraft's fans' blades don't produce lift like a wing or helicopter rotor,
and hence the ground effect doesn't come into effect.

I'm off to Solfest now, so can't elaborate further...
(, Wed 22 Aug 2012, 14:27, Reply)
This is a normal post I ordered a bacon and egg bap this morning
testing my roll authority
(, Wed 22 Aug 2012, 10:17, Reply)
This is a normal post this is the equivalent of trying to walk by jumping up in the air and blowing really hard

(, Wed 22 Aug 2012, 11:31, Reply)
This is a normal post kinda cool, but whats the point?
a car is faster, quieter, and less energy intensive.
(, Wed 22 Aug 2012, 14:38, Reply)
This is a normal post I want to be the dick
That turns up to work on one of these.
(, Wed 22 Aug 2012, 19:15, Reply)
This is a normal post Star Wars Speeder Bikes in our life time?
*crosses fingers*
(, Wed 22 Aug 2012, 21:27, Reply)