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Old Dec 14, 2012, 05:56 PM
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Aeroteam Aresti 108 (2.7m) aerobat

Spied in Andy's column in the latest RCM&E - very nice!

Updated Oct 13 - new info from the Aeroteam site...

Available at the end of 2013, the Aresti 108” (2.75M)
- A Monster sized Aerobatic Sloper

Specifications
• Span: 108” (2.75M)
• Length: 1.68M
• Wing Aerofoil: JH10SYM
• Tailplane Aerofoil: JH10SYM
• Controls: Rudder, Elevator, Ailerons, & Flaps
• Ballast provision: 1.0KG+ in wings and fuselage
• Weight: TBA

At last, its here, a big highly agile slope aerobatic plane that will do the big air manoeuvers, plus VTPR stunts in one cool package. Aresti 108” is the latest development of the now classic Vector III aerobatic sailplane a design I did in 1986!
















Smaller 2m (80") version:



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Old Dec 14, 2012, 06:00 PM
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Basic details from the article...
  • 2.7m/108" span with new sections;
  • Conventional stab with elevator;
  • 4 standard (yes, standard!) servos in the wing, two minis for the tail;
  • Pre-preg carbon layup planned (eek, sounds expensive...);
  • Longer nose and bigger rudder than Vector IV;
  • 2m version to follow.

Progress update from James H, Oct 13:

Quote:
Originally Posted by Doc James H View Post
OK so what's happening?:

Aresti 108 plugs, milled by Mike Francies, are in the Czech Republic now in the advanced stages of having the production moulds made. As soon as I have pics I'll post some here and on my website.

This plane will be European standard and I think will set some new standards in many ways.

Aresti 80 (YES IT HAS A LITTLE BROTHER!) plugs are on their way to our new factory in China, via the good offices of Tony Fu in the UK. These were also made well by Mike Francies and the CAD design done by Will Deighton - both in the UK.

In the development and coordination of both designs by the way, Tony Fu played a pivotal advisory and organisational role.

Big thanks to the team!

Hopefully we will see prototypes of both in Mid December this year, or hopefully earlier.

There is a lot of interest here and I am getting emails daily.

Cheers and sorry not to give more mouth watering news!

James.
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Old Dec 15, 2012, 10:02 AM
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Looks promising!

Steve
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Old Dec 15, 2012, 11:08 AM
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Looks like a big Mini Vector with a bigger breakaway tail boom!
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Old Dec 15, 2012, 11:48 AM
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not too much like the Dorado then ?
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Old Dec 15, 2012, 12:59 PM
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The Aresti 108 is being prototyped at the Sloperacer workshops. You can be sure that the structure and build specification won't be run of the mill! We are looking at coreless construction for the wings, which means no sandwich material. We are also looking at other techniques including expanding epoxies and possibly prepreg if we can sort out the new ovens in time.

In any event it will be a very strong model. I'll make sure of that.

Cheers Tony
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Old Dec 15, 2012, 02:48 PM
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Just don't make it too heavy... Maybe a "regular" and "heavy slope" option could be offered?

Steve
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Old Dec 15, 2012, 05:27 PM
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Quote:
Originally Posted by Phil.Taylor View Post
not too much like the Dorado then ?
I'm glad you said that not me...

Quote:
Originally Posted by surfimp View Post
Just don't make it too heavy... Maybe a "regular" and "heavy slope" option could be offered?
Totally agree - this doesn't have to be a VTPR special, but it would be a shame if the Aresti ended up as a big air model only. What's the target weight and wing loading?

The boom needs to be sufficiently reinforced to avoid the same failures as the Vector and Minivec, but aside from that I can't see a need for much carbon - with that big chord and a section thick enough to take standard servos the wing should be intrinsically stronger than an F3F machine.
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Old Dec 15, 2012, 07:34 PM
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Thing to appreciate about the Aresti 108 is that it is huge and has a fully symmetrical section.
It will be pretty much a no compromise model in terms of construction which is every thing this design deserves. James has incorporated many improvements over his previous Vectors series, mainly to improve efficiency, extending the flight envelope and energy retention to carry through aerobatic manoeuvres and lots of them! There will be extensive prototype testing of course and we have test pilots lined up to help us develope the Aresti. Interestingly, James and I have mused over the idea it may well have VTPR capabilities because the wing area is so great, it's not what it was designed for but may well be an area we will explore. For me I love to see DS acro capability too. Invariably that will mean a light and heavy version. I'm building the prototypes, so the lay up specification, techniques used and production methods are under my control. However, there's probably going to be a need for quite a bit of ballast and there is provision in the wing and fuse. So it's funny that our concerns are not that it will be too heavy but too light. Anyway, we'll find out soon enough with the prototypes.
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Old Dec 15, 2012, 09:21 PM
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Awesome!

Steve
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Old Dec 18, 2012, 04:52 PM
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That is a massive wing area.
VTPR all very clever and nice where slopes mean that you simply can't expect to fly anyway but light and close.

But that's a lot of model and a lot of effort which in my mind is much better set free on a bigger hill and bigger aeros. That's where the scale and presence is justified. It might be interesting to build a very light one as a fun project, but better to find a bigger hill IMO and let her loose at a more appropriate weight.
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Old Dec 18, 2012, 05:40 PM
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Isoaritfirst, I agree with you. My general feeling is to keep the weight under control for those of us without a world class big lift slope (and corresponding excellent landing zone) in their backyard, so that the plane is still docile and fun to fly in less than "awesome" (think Bwlch or Rossilli) conditions. But then, of course, offer the heavy version for those with regular access to such sites

VTPR planes tend to be highly specialized in effort to suit typical local conditions, which, if we look to the Breton and Californian examples where this style of flying has flourished to date, typically aren't high lift scenarios.

In terms of the overall global market, I really can't say what I think the best call is for a potential manufacturer - i.e. to target strong or light lift conditions with the design and construction. We see examples of light lift planes that have gotten very popular worldwide, as well as stronger lift designs. Splitting the difference with an all-rounder is a good call most likely.

Steve
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Old Dec 19, 2012, 03:03 AM
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Surely (don't call me Shirley) the best scenario for hitting the biggest market is one model that is light and strong (see any modern F3x plane) with a good ballast capability?

Best of both worlds.

Chris
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Old Dec 19, 2012, 10:53 AM
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What's the AUW of a Vector 3? I'd say building the Aresti for an AUW that gives it a similar wing loading (or maybe a smidge lighter) to the Vec will probably hit the spot for most people.
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Old Feb 19, 2013, 03:47 PM
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Vector max weight is 2.9Kg.

of this 1.4Kg is the airframe and the rest is the ballast capacity
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