The fuel efficiency of the Russian Superjet 100 aircraft has increased by 3-4% due to the use of the new "saberlets" technology — curved wingtips. This was announced by Vadim Shirokikh, head of the flight test complex of the "Regional Aircraft" branch of the "Yakovlev" aircraft manufacturing company.
According to him, they save about 3-4% of fuel, meaning that fuel efficiency has increased by 3-4%. This is quite significant for an aircraft in the transport category.
In the world, curved wingtips of an aircraft are called "winglets." However, on the Superjet 100, they decided to call them differently — "saberlets" because of their shape, resembling a saber.
Also, thanks to the saberlets, the approach speed decreased by almost 7.5 km/h, or 4 knots. Now the aircraft can land on shorter runways, as the landing speed is lower, Shirokikh added.
In March, a prototype of the Superjet aircraft made its first flight with foreign systems but with Russian PD-8 engines. In April, another fully domestic aircraft with PD-8 engines joined the certification flight tests.
Earlier, www1.ru reported that the Superjet SJ-100 tested a new mode of PD-8 aircraft engines at minimum speed for the first time.
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