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Old Dec 28, 2012, 12:01 PM
Shane Spoor
PlayinInTheParK's Avatar
Australia, QLD, Brisbane
Joined Sep 2006
352 Posts
Build Log
FLUID - Aerobat/Ultrabat

Welcome to the" Fluid" i hope you enjoy your ride.
I fly slope ,DS ,thermal ,3D planes, all have there different high's, when on the slope i like my aerobatics a lot ,this plane is designed from many concepts that have been proven to work,and create the plane i want to fly.
The main things taken from other planes for this design are ;
From a DLG i took the construction ,thin penetrating wings ,large flapperons ,(for hand catch landings),and light wing loading.
From a wingeron plane i took the effortless roll and energy.
From a Fishy type plane i took the side area for knife edge flight, (ultrabat ,Yoda !!!).
From the efforts of die hard aerobat designers ,the Mad Cams for crazy fun radical stuff.

I have gone with a totally symmetrical approach ,wing, tail ,fuse ,fin to minimize coupling effect.I have designed the fuse around the inner control workings to keep everything as internal as possible .It's going to be 2m wingspan at around 600grams.

This project has been on the go for 6 months so far,i wanted to finish the fuse mold first before stating this thread .
I only have a very basic drawing of the finished look,things are changing a little as it progresses.
At this point i am cutting wings and tails.
















Pics of the finished mold next
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Old Dec 28, 2012, 12:23 PM
Don't ask me anything...
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Ireland, County Kerry, Kerry
Joined Dec 2005
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Wow, very cool project Mr. Park ! I like your design brief and solutions, seems very well thought-out - this is going to be great! Congratulations!

Chris
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Old Dec 28, 2012, 12:33 PM
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Tampere, Finland
Joined Nov 2004
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Wow!
This looks ... SHARP

Does it have a name yet? Spade, Spear, Paddle, Pike, Barracuda?

Do you plan to make components or drawings available? (... or encourage everybody to design their own cool things? )
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Old Dec 28, 2012, 12:40 PM
Don't ask me anything...
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Possibly it's been called the "Fluid" ....
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Old Dec 28, 2012, 12:54 PM
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Tampere, Finland
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Quote:
Originally Posted by Woodstock 1 View Post
Possibly it's been called the "Fluid" ....
Think so?


I was staring at the photos and forgot all about the thread title
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Old Dec 28, 2012, 01:54 PM
Cliff
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Australia, QLD, Pacific Paradise
Joined Oct 2011
359 Posts
That looks great Shane. Cant wait to see you flying this at the Knob :
Cliff
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Old Dec 28, 2012, 02:03 PM
Don't ask me anything...
Woodstock 1's Avatar
Ireland, County Kerry, Kerry
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Quote:
Originally Posted by perttime View Post
Think so?


I was staring at the photos and forgot all about the thread title
I know what you mean !

Chris
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Old Dec 28, 2012, 03:35 PM
Phil.T-tailer
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Devon, UK
Joined Jun 2003
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Nice work!
thats a good looking shovel there

Phil.
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Old Dec 28, 2012, 04:01 PM
slope'n the Colombian Andes
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Colombia, Antioquia, Girardota
Joined Mar 2001
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Shovel? -- Ancient spearhead with whale fluke... : )
I'm looking forward to seeing the wing.

Dieter Mahlein, ShredAir
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Old Dec 28, 2012, 04:13 PM
Feeling FrSky
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United States, CA, Santa Barbara
Joined Feb 2003
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Love it!! Very nice!

The Aero-Glide that Michael Richter and I collaborated on flew very nicely, aside from some technical issues with the pulley setup for elevator & rudder.

Besides the rudder flips, I was most impressed by its excellent knife edge capability... it tracked perfectly straight, with absolutely no pitch or roll coupling. And despite the apparent lack of sidearea, it hung in there in knife quite well.

The only downside to the fully symmetrical fuselage is that orientation can and occassionally does become an issue, especially in conditions where the sun is in your eyes and you're flying the silhouette. I definitely recommend putting something on one side (top or bottom) of the wing to help identify up from down.

Have fun with this! It looks great. I will really enjoy watching this project evolve!

Steve
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Old Dec 28, 2012, 06:30 PM
gonzalo contreras
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caracas
Joined Feb 2007
461 Posts
Whatīs is it?

HI

Ok, is time to erase the concepts, and rewrite new for it... and now the serious lines.. Congs. itīs a new bird on the sky, it remember a bird called Voltij.... but itīs so early to have any conclusion..I see the concept in the Aero Glide, but i think about the landing with these fin.? maybe is time to redisign or resize it and avoid broken tails..

Go ahead, and itīs a good news.

Gonzallo.
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Old Dec 28, 2012, 09:45 PM
Feeling FrSky
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United States, CA, Santa Barbara
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I can't speak for the Fluid, but with the Aero-Glide: the plane is so light that breakage of the tail was a non-issue. That's part of the whole ultrabat concept; build light and it will be strong enough

Steve
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Old Dec 29, 2012, 04:20 AM
ETS....Energy retention system
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gold coast australia
Joined Aug 2008
5,141 Posts
Great work as always shane. Looking forward to seeing the results. If it's anything like your other builds it will be 2nd to none...
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Old Dec 29, 2012, 06:33 AM
Don't ask me anything...
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Fins that extend below the boom are popular with DLG's and some TD ships, and you don't get many complaints about damage there (OK, I believe DLG's are often caught in the hand, but still)..

Chris
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Old Dec 29, 2012, 11:08 AM
Shane Spoor
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Australia, QLD, Brisbane
Joined Sep 2006
352 Posts
Thanks for the good feedback.

The Aero-Glide knife edge ability was truly inspirational Steve ,thanks ,as for
the tail hanging too low ,this will be landing on long grass 99% of the time .What really has me excited is hand catch landings using flaperons to slow it down and the wingerons to keep it on track.
As for the spear/arrow head look .......probably should have called it the spear or arrow.
Here are the mold pics ,little bead filer is poraver ,white gell coat is Rengal SW 10 .Had some exothermic reactions with the plug ,turned out OK.















Small indents near the tail will hold small bits of aluminum to form the tail bearing support
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