Posted on: 22 October 2015 by Mark Howells
Fatigue strength testing of the Sukhoi Superjet 100 LR (long range) version to confirm the designed service life of 70,000 flight hours and 54,000 cycles has begun the Central Aerohydrodynamic Institute (TsAGI).”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,” explained Sukhoi Civil Aircraft Company chief designer 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 SSJ100 LR 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 the model.The Long Range version has a range of up to 4,578 km or 2,470 nm, maximum takeoff weight of 49,450 kg and strengthened wings for the increased weight. The SSJ100 LR’s SaM146 engines will have a 5% increase in 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.