Sukhoi Civil Aircraft Co. (SCAC) has tested two new lower-weight wing designs for future versions of the Superjet 100 (SSJ100) regional aircraft. The new wings—one with a greater thickness ratio and one with less sweep—will reduce weight while improving aerodynamics, according to Russia’s Central Aerohydrodynamic Institute (TsAGI), which conducted the wind tunnel tests. The new designs can improve fuel efficiency by 10% and will be easier to manufacture, TsAGI ...

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