Alpina GT

INTERMEDIATE / ADVANCED - EN C

The Alpina 4 revisited with new fabric and colour scheme
Proven 2.5 liner concept as on Alpina 4 and Delta 4
700g lighter than Delta 4, even more robust than Alpina 4

Class leading performance in the 3-liner EN C category
Intuitive, comfortable handling at all speeds
The EN-C glider of the Gran Turismo range

PRODUCT INFO

Intro

The Alpina 4 GT brings the new scheme design with a more robust top surface fabric. It is for pilots who want the feel, handling and performance of the classic 3 line EN C glider but do not need the additional performance offered by a 2-line design.

New Features

The Alpina 4 GT is the Alpina 4 but features Ozone's new colour scheme and a more robust top surface cloth. Dominico 20D32 replaces the mix of Dominico 20D and Skytex 27 for improved durability and robustness which makes it more suitable for rough terrain, with a minimal impact on canopy weight.

The Pilot

The Alpina 4 GT is for intermediate to advanced pilots who fly 70-100 hours per year and have SIV experience. Due to its ease of use and high level of passive safety, it is also suitable for pilots moving up from the category below. Pilots who loved their Alpina 4 and Delta 4 and are happy to continue their experience with a similar technology and overall behavior will immediately be at home with the Alpina 4 GT.

The Tech

Intuitive and efficient Angle of Attack control, a proven airfoil design, and optimised internal structure make the Alpina 4 GT an XC glide machine. The super strong structure reduces aerodynamic losses, even in aggressive turbulence the profile remains strong, retaining its shape and efficiency without performance loss from chordwise deformation.

The Ozone Active Control Risers, allow full AoA control throughout the speed range without deforming the camber of the profile. The ACR system acts on B & C lines giving close-to-2-liner control with the reassurance of a 3-liner design.

Certification

The Alpina 4 GT is certified EN-C in all sizes.

In Flight

The Alpina 4 GT is up to 900g lighter than the Delta 5. The reduction in sail weight delivers the handling and performance benefits that come with lower inertia — crisper and more agile feel, more sensitivity in the climb and better collapse behaviour. The reduced weight also makes it nicer to carry.

The Alpina 4 GT retains the low sink rate of the Alpina/Delta 4 for very good thermalling efficiency and cuts through the air gaining altitude in the gusts much like a competition wing. The glide performance throughout the speedrange is the best that can be expected in the category.

The forgiving collapse behaviour is thanks to a relatively low aspect ratio, complex internal structure and line architecture and by optimised wing twist. The Alpina 4 GT has a well proven track record as a safe forgiving wing with little tendency to shoot or rotate after side collapse and good frontal behaviour.

Thanks to the Ozone Shark Nose profile, the wing is resistant to spin and stall, and can be flown safely at low speed making top landings, or landings in tight spots, simple for a wing of this class.

The brakes are linear — precise in the first part of the range and effective in the second. It is easy to adjust the angle of bank and to place the wing exactly where you want in the core. Strong chord structure and high sail cohesion make for highly coordinated roll/yaw and an agile, exciting feel.

The GT Range

GT stands for Gran Turismo or Grand Tourer, and is our semi-light glider range, providing the in-flight benefits of a lower canopy weight and the robustness close to a standard weight wing with better longevity than dedicated light wings. The GT range is an expression of our true-performance promise; light, agile and safe with class leading performance in the most demanding conditions.

SPECIFICATIONS

SIZE	XS	S	MS	ML	L	XL
Number of Cells	66	66	66	66	66	66
Projected Area (m²)	16.4	18.4	19.6	20.7	21.8	23.4
Flat Area (m²)	19.3	21.7	23.1	24.4	25.7	27.6
Projected Span (m)	8.52	9.04	9.33	9.59	9.84	10.19
Flat Span (m)	10.81	11.46	11.83	12.16	12.47	12.92
Projected Aspect Ratio	4.4	4.4	4.4	4.4	4.4	4.4
Flat Aspect Ratio	6.05	6.05	6.05	6.05	6.05	6.05
Root Chord (m)	2.25	2.38	2.46	2.53	2.6	2.69
Glider Weight (kg)*	3.91	4.19	4.42	4.56	4.75	5.02
Certified Weight Range (kg)	55-70	65-85	75-95	85-105	95-115	110-130
Certification	EN C	EN C	EN C	EN C	EN C	EN C

* Wing weight may vary up to 50g per size due to slight variations in the manufacturing of the fabric used.

The wing is delivered with 12mm risers and Maillon Rapide line connections.

Materials

Top Surface Cloth: Dominico N20D
Bottom Surface Cloth: Porcher 70000 E71
Rib cloth: Dominico N20D_32_FM
Upper lines: Edelrid 8001 serie
Mid lines: Edelrid 8001 serie
Lower Lines: Edelrid 8001 serie

Ozone Alpina 4 GT(EN C, Lightweight)