RIS (Rear Inflatable Stabiliser)
The Niviuk design team have a thorough and complete understanding of aerodynamic physics and they have applied that knowledge to the new competition and Cross Country harness, the DRIFTER.

The new and innovative Rear Inflatable Stabiliser (RIS) maintains maximum aerodynamic efficiency at all times resulting in increased overall performance of the wing with improved glide and sink rates.
The RIS ensures the departure of disruptive airflow is as far away as possible from the main body of the harness thus reducing unwanted and counterproductive turbulence.

The RIS is inflated by way of two lateral air intake ducts, each positioned in an area which is permanently fuelled, so avoiding unwanted deflation by any loss of air feed. Even whilst the pilot is entering the “cockpit” (pilot´s cabin) the RIS remains in continuous operation, maintaining the aerodynamic profile without deformation or loss of efficiency.
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