Measured performance
At maximum speed, the D4 has a fall-rate advantage of +12 cm/s over the D3. In calm air, this gain represents the total height of the line every minute! The difference is even greater in turbulence, where the D4 transforms gusts into altitude in the manner of competition wings. The D4's top speed exceeds that of its predecessor by 3 km/h, putting it irreparably behind in accelerated flight.

Real Performance
Intuitive, efficient angle-of-attack control, improved profile and optimized internal structure make the Delta 4 a Cross machine with impressive glide in turbulence. Its structure, the strongest we've ever developed, maintains the integrity of the profile even in the midst of turbulence, avoiding yield losses associated with deformations along the chord.

New "ACR" System
The new Active Control Risers, inherited from the Mantra, allow direct control of the angle of attack without changing the camber of the profile, mếme in accelerated flight. By operating both the B and the C, the ACR allows you to control the wing like a 2-line, while retaining the comfort of a 3-line architecture.

Security
This wing is the most docile of all the Delta wings. It can withstand high levels of turbulence without closing, even in accelerated flight. What's more, its behavior in the event of closure is the most compliant in the series. This feat is the fruit of choices such as a relatively low aspect ratio, but also of technical expertise in structure, line architecture and optimized wing twisting. Numerous tests have shown that after a lateral collapse, the wing is subject to very little rotation or surge, and reopens without shock. Behavior after frontal closure is excellent, with immediate reopening.

The Ozone Shark Nose profile, which reduces the risk of spins and stalls, makes landing on steep terrain relatively easy for a wing of this performance level.

Pleasure in Flight
The piloting sensations are a clear improvement on those of the D3, and will give you immense pleasure in the air. Brake feel evolves linearly - precise in the first part and authoritative in the second. You can easily adjust the inclination and place the wing in the thermal core. The structural cohesion of the wing, and in particular the chord, ensures excellent coordination between roll and pitch, providing a feeling of agility and pleasure.

The Pilot
The Delta 4 is designed for intermediate to advanced pilots who fly between 70 and 100 hours a year, and who have already completed an SIV. Its ease of use and high level of passive safety make it accessible to riders wishing to move up a category. Experienced pilots who want to fly with a greater margin of safety will find great satisfaction in a wing whose Cross performance is at the top of its class.

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