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The Leopard’s groundbreaking blend of performance and ease will suit both competitive XC pilots and pilots looking to progress to the highest levels of competition flying 

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Pure Performance Has Never Felt So Easy

The Leopard shares its DNA with the Explorer (EN B) and with the Bonanza 2 (EN C). This, combined with our experience of over 8 years of continuous development of 2 liner gliders with the World Cup winning Boomerang series, has enabled us to produce a wing with significantly improved characteristics in several key areas:

Stability

  • Compared to past 2 liner and high performance wings, the Leopard has greater pitch stability over the entire speed range. In combination with outstanding wing tip stability, the result is a greatly reduced pilot workload in normal flight.

Handling and feel

  • One of the most outstanding aspects of the Leopard is the way the wing feels solid and cohesive but not stiff – it immediately feels like a whole wing that better connects you with the elements. The turn is precise and well co-ordinated, the wing accelerates towards thermals and pitch stability is first class.

Feedback and “thermal sniffing” behaviour

  • The Leopard gives smooth yet highly intelligible feedback. On glide, it’s easy to guide the wing towards thermals and lifty lines by feeling pressure differences through the B risers. The wing flies equally well if you just let it fly, it has a tendency to pull towards lift automatically. Once in a climb, the feedback from the glider also helps you stay centred in the core.

Designor Notes

The Leopard project involved close collaboration between designers Gin Seok Song and Torsten Siegel. Torsten explains:

“The Leopard is the first production 2 liner with our 2nd generation EPT (Equalized Pressure Technology) profile.

More extensive CFD (Computational fluid dynamics) analysis of the whole wing has led to the development of a new profile that significantly improves the lift to drag ratio whilst still maintaining a constantly high internal pressure. The result is increased stability across the entire speed range. In turn, this has enabled better performance, smoother, more responsive handling and a higher top speed.

Besides the new profile, we dedicated a large part of our R&D effort to carrying out research to find a new method to calculate the optimum sail tensioning at all parts along the profile.gin-leopard-wing

The Leopard has 86 cells, which provides an extremely clean surface with reduced ballooning. We selected a combination of 3 and 4 cell blocks according to the shape of the profile in accelerated flight. This gives a cleaner arc over the whole span and, along with optimized line attachment points, also helps to maintain even sail tension.

Overall, it’s the combination of theoretical advances and practical refinements over 2 years of testing all over the world that the gives the Leopard its unique character. We are confident the wing will appeal to dedicated XC pilots looking for the very best that the EN D category has to offer.”

Technical data

SIZE XS S M L
Flat area (m2) 20.5 22.32 24.22 26.7
Flat span (m) 12.08 12.65 13.18 13.84
Flat aspect ratio 7.12 7.15 7.17 7.17
Projected area (m2) 17.56 19.14 20.8 22.93
Projected span (m) 9.79 10.25 10.71 11.25
Projected aspect ratio 5.45 5.5 5.51 5.51
Chord (m) 2.2 2.21 2.3 2.41
Number of cells 86 86 86 86
Glider weight (kg) 4.85 5.30 5.65 5.95
Certified weight range (kg)      70-88           85-102           95-112             105-127      
Certification EN D EN D EN D EN D
         

 

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Leopard-Manual-UK

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