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  22.10.2015 

Fatigue Strength Testing of Sukhoi Superjet 100 Long Range Started in TsAGI

Moscow, October 22. At the Central Aerohydrodynamic Institute named after N.E. Zhukovsky (TsAGI) fatigue strength testing of Sukhoi Superjet 100 long range version was started to confirm the designed service life of the aircraft: 70 000 flight hours and 54 000 cycles.

Last year this SSJ100, certified model RRJ-95LR-100, with production number 95075, was delivered disassembled by the AN-124 Ruslan freighter to the Ramenskoye airfield, in the town of Zhukovsky, near Moscow. Fuselage, wings and tail were put together and special purpose load complex, measuring sensors and structure health monitoring systems were adjusted to the assembled SSJ100 airframe.

During the fatigue strength testing, all the primary elements of the aircraft structure will be checked under multiple loading conditions corresponding to all flight stages, including turbulence,  said Sukhoi Civil Aircraft Company Chief Designer Mr Vladimir Lavrov. The test results will confirm both the stated aircraft service life and the programme of maintenance checks developed for this aircraft type and implemented during Customers fleet operations.

At the moment the confirmed designed service life of the aircraft is 9 000 flight hours and 6 000 cycles.

In 2013, the Aviation Register of the Interstate Aviation Committee (IAC AR) certified the long range Sukhoi Superjet 100 and confirmed its compliance with IAC AR regulations. That allowed Russian airlines to operate this version of the SSJ100. At the moment, works are undergoing to achieve the European Aviation Safety Agency (EASA) certificate for this model of Sukhoi Superjet 100  RRJ-95LR-100.

Long Range version has a longer, compared to the SSJ100 Basic, range of up to 4578 km or 2470 nm, Maximum Take Off Weight  49 450 kg and strengthened wings for increased weight. The SSJ100 long range is equipped by SaM146 engine with increased by 5% takeoff thrust performance.

Sukhoi Civil Aircraft Company and TsAGI have been working closely on the Sukhoi Superjet 100 Project since 2001. One of the largest scientific research center in the World using the SSJ100 prototype with production number 95002 conducted airframe tests of static strength on the airframe in general, and on samples and separate aircraft units as well. The same center also conducted researches on the aircraft aerodynamics in wind tunnels.

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