Central Aerohydrodynamic Institute
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TsAGI scientists test the fin box strength of MS-21-300 aircraft

17 September 2015

In September, TsAGI conducted experiments aimed at testing the bearing capacity of the fin box metal-composite construction of the MS-21-300 aircraft. The fin box is manufactured according to the design of Irkut Corporation PJSC at Russian enterprises, such as Aviastar-SP JSC (Ulyanovsk) and ORPE Technologiya JSC (Obninsk).

The check of bearing capacity consists in determining the actual strength of the fin torsion box, and it is accomplished by loading the construction until its failure. The structural state after these tests will allow continued research for solving specific strength problems of composite torsion units. At the moment, the TsAGI specialists and Irkut Corporation PJSC are analyzing the results and discussing their planes for future work.

Alexander Dzyuba, the Deputy Head of the Aircraft Strength Complex and Head of Static and Thermal Strength Division of TsAGI said: “Experiments are very essential for the MS-21-300 aircraft project. This is the first full-scale strength test of the unit, manufactured in Russia and almost entirely made of composite materials. Structural failure occurred in accordance with our calculations. The specified strength value of the composite construction is fully confirmed. The information obtained is essential in the course of preparing for the flight tests of the MS-21-300 to be conducted in 2016.”

Konstantin Popovich, the Vice President of Irkut Corporation PJSC on the development of aeronautical equipment and the Chief Designer of the MS-21-300 aircraft made the following comments: “I would like to particularly note the professionalism of the Aircraft Strength Complex specialists of TsAGI in the process of implementing joint projects. The successful cooperation of developers and scientists in the nearest future will allow designing the new generation airplane with highly competitive features.”

TsAGI Press Service
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