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Gaastra Phoenix - official release!

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Toby
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Gaastra Phoenix - official release!

Postby Toby » Wed May 14, 2003 7:42 am

Rising from the fires of the Gaastra design team, the Phoenix has arrived to dominate the skies and change the face of kiteboarding. Simply put, the Gaastra Phoenix is the most advanced piece of kiteboarding equipment on the market. The Phoenix will change the current approach to kite design with Gaastra’s patent pending SST2 (SHAPED SPAR TECHNOLOGY), and 3D RADIAL panel layout. Offered in sizes 17.5, 21, 25 m2 and designed as a high-performance 4-line inflatable kite, the Gaastra Phoenix delivers never before seen speed, unmatched power, precise control and an almost unlimited range.


SST

Shaped Spar Technology is a revolutionary concept in kite design derived from exploiting the 2 most important factors in aero design, LIFT and DRAG.

1) LIFT

Lift is defined as a force exerted on an airfoil, perpendicular to its path of travel. This is the force that enables kites to fly, so we want as much of it as we can generate and handle, without running into adverse effects.

2) DRAG

Drag is defined as a force exerted on an airfoil in a direction opposite to the foil's path of travel. Since drag is a force that opposes the foil's motion in the desired direction, we want to minimize this force as much as possible.

The Phoenix leading edge is constructed in an elliptical shape that is achieved by using 2 reduced diameter chambers. SST (SHAPED SPAR TECHNOLOGY) reduces the leading edge diameter approximately 20% over conventional single chamber leading edge designs. The reduced diameter enables a faster flying, more efficient kite . . . it maximizes LIFT and reduces DRAG.

3) LIFT to DRAG RATIO

There is a relationship between the lift and the drag produced by a given foil, and often there is a trade off between these two effects. One is therefore faced with the challenge of creating the desired amount of lift without too much resulting drag. The Phoenix’s optimal LIFT to DRAG RATIO generated from SST (SHAPED SPAR TECHNOLOGY) is not attainable though current single leading edge designs.

The benefit gained by the SST construction is not only a more efficient profile but also in providing a more rigid air frame. Strength and rigidity are increased by constructing the leading edge with 2 smaller chambers. When SST is compared to a conventional single chamber, large diameter leading edge the differences are significant. The Phoenix airframe reduces the amount of distortion that is viewed as acceptable in current kite design, therefore delivering efficiency that is passed on to the rider through more power, more range, more speed, and more response.

SST2 Advantage:

Complete domination in 8 knots of wind.
Elliptical shape reduces leading edge diameter approximately 20% over conventional single chamber leading edge designs.
Optimal LIFT to DRAG Ratio.
Delivers the most rigid air frame for maximum efficiency in all conditions.

3D Radial Panel Layout

Most fabric structures are assembled from a set of individual shaped "panels". The final shape of the foil is achieved through the shaping of the edges of the adjoining panels. The seams between these panels can be oriented in such a way as to allow the careful alignment of principle thread directions with the main loads in the structure. The general arrangement of the seams, panels and thread directions in a fabric structure are collectively referred to as the "panel layout". A good panel layout can go a long way towards achieving a good flying shape, while a poor panel layout can ruin even a very good design shape.

The 3D Radial layout optimizes Phoenix efficiency. Plan forms and cross sectional shapes are chosen to maximize lift and minimize drag. Load paths are calculated and materials chosen and oriented in such a way as to minimize distortion. Cutting edge analytical software tools are used to assess loads, load paths, and appropriate foil shapes, materials and panel layouts.

Fluid Drive Wing Tip

The Fluid drive wing tip functions as a single continuous leading edge energy transmitter. Regardless of angle of attack, the wing tip maintains an efficient shape with no “foldingâ€

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Andre_poweredby_north
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Postby Andre_poweredby_north » Wed May 14, 2003 9:13 am

I read somewhere that they only come in sizes 17.5, 21, and 25... I wonder what the wind-ranges are....

Looks very nice though, would love to try it...

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Postby Foxi » Wed May 14, 2003 11:28 am

any news on availability in Germany ?

thx, Jürgen

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Postby mobius » Wed May 14, 2003 2:30 pm

Toby - please try to find out what Gaastra say the windranges are on these kites, especially the 25m - will a can of beans do the trick???

Please get as much info as you can< I think a lot of us are very curious about these things,

Thanks

Cheers

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Postby Foxi » Wed May 14, 2003 4:09 pm

.. and they don´t spend a single word for its relaunch capability ! 25m are a massive dip in the drink .. ;-))

aloha

HT

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Postby Wolfgang » Wed May 14, 2003 8:51 pm

Hangtimer wrote:any news on availability in Germany ?

thx, Jürgen
As I know Gaastra, Jürgen, this kite will be on sale pretty soon as a kind of early summer lightwind surprise attack - before they hit the market with the GXR 2004 in September...

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Postby anthonyd » Thu May 15, 2003 12:57 am

Just sounds like Gastra marketing blowing their horn.

Take away the coll technical sounding names like SST and "Fluid Drive Wing Tip" and read between the lines. Same concept that the others are doing whether they are calling them "rocket struts", "hex ribs", "vortex stabilizers" etc.....

Shure it looks good and could fly well, but I dont think there are any technical breakthroughs there, marketing ones maybe.....

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Postby ptraykovski » Thu May 15, 2003 1:53 am

the elliptical profile (as opposed to round) leading edge, with two bladders one behind the other, is very different from what anyone else has on the market! I heard some rumors (on this fourm???) that north has done some prototypes of this, but it looks like Gaastar will be first to market with it.

Also intersting that for big kites, both Gaastra and Takoon with the mamooth that has the span line seem to indicate that having a low profile yet stiff leading edge is a key design feature.

-Peter

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Postby Andres_Santacruz » Thu May 15, 2003 5:27 am

My friend saw the gaastra 25 meter in action in Baja California, mexico last december, and says they DO work and very well.

Anthony, post edited, wonder why i worry posting in tube related topics, i fly foils.
Last edited by Andres_Santacruz on Thu May 15, 2003 7:32 am, edited 1 time in total.

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Postby anthonyd » Thu May 15, 2003 5:36 am

Andres,

Pull you head back buddy.. who said they didn'y fly?? Nowhere above do I see that. More like "how do they fly" everyone asked the same when the x2 came out.


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