TsAGI continues repeated static tests of MS-21 aircraft stabilizer
7 November 2017
The Zhukovsky Central AeroHydrodynamic Institute (TsAGI, a member of the National Research Center “Zhukovsky Institute”) continued repeated static tests of the composite stabilizer assembly of the MS-21-300 passenger aircraft. The lead developer is JSC Irkut Corporation.
TsAGI engineers purposely caused damage to part of the frame of the upper assembly’s panel and tested it for residual strength. While loading the element, the testing engineers simultaneously monitored the development of cracks around the defect area. The tested area successfully withstood all the design loads. Then, the damage was repaired and, as a part of repeated static tests, the assembly was subjected to bending deformations. The experimental data will enable engineers to determine residual strength performance of the element of future aircraft in the event of repair. Sixty thousand cycles in total are planned at 50 % of the design load.
Earlier the tested element successfully passed life cycle testing at TsAGI equivalent to 60,000 standard flights. Then engineers of FSUE “Central Institute of Aviation Motors named after P.I. Baranov” tested it for dynamic strength (bird-strike resistance) and hail resistance to simulate operation under standardized certification conditions, and returned it to TsAGI for further testing.