The United Aircraft Corporation (UAC) managed to reduce the fuel consumption of the "Superjet" SJ-100 aircraft by 4% thanks to a special horizontal winglet. This was reported by Vladimir Lavrov, Chief Designer of the "Superjet" program.
According to him, the idea with horizontal winglets started to develop quite a long time ago. UAC worked with various customers who operate aircraft in various conditions.
We wanted to improve flight performance. One of these measures was winglets, they have a special shape, which was verified in calculations and tests. The winglets confirmed their fuel efficiency characteristics, allowing them to achieve more than 4%. Therefore, all import-substituted aircraft come with them as standard.
The first flight with PD-8 engines took place in Komsomolsk-on-Amur with a crew consisting of test pilots Igor Grevtsev, Dmitry Demenev, and flight operator Maxim Gryukanov. The aircraft was in the air for about 40 minutes, reaching an altitude of up to 3,000 m and a speed of 500 km/h.
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