Russian researchers have performed windtunnel testing on models of a modified Sukhoi Superjet 100 which features winglets.
The analysis involved looking at flutter on an amended wing design for the long-range Superjet 100LR variant, says the Central Aerohydrodynamic Institute (TsAGI).
TsAGI states that the tests aim to ensure that changes intended to increase the aircraft’s performance nevertheless keep the airframe free from hazardous self-induced oscillations.
Tests on the one-fifth scale model required subjecting it to windtunnel speeds of 75-100kt to simulate flight at 430-480kt.
The model has blended winglets similar in outward appearance to those planned for the Airbus A330neo.
Moscow-based TsAGI has not indicated the extent to which the modifications change the Superjet’s wing span. The basic aircraft has a span of 27.8m.
While the results of the tests are still being assessed, the institute says its specialists are “positive” about the outcome.
Source: Cirium Dashboard
