TsAGI will host research on the wing strength of the new Superjet

Photo by © TsAGI Press Service

The SJ-100 aircraft project plays one of the key roles in the import substitution programme of the Russian aircraft industry, and one of the biggest and most significant stages of the work is the certification of the aircraft. A wing console has been delivered to TsAGI to confirm the resource performance of the SJ-100. Its tests are planned to start in 2025 after the final assembly of the mechanisation, the institute’s press service said.

The purpose of the upcoming research is to obtain data on the fatigue strength and operational survivability of the wing of the new Superjet, as well as to confirm the compliance of the design with the requirements of aviation regulations. The wing mechanisation will be subjected to multiple cyclic loadings to substantiate the assigned service life of 54,000 flights, which will take about five years, according to scientists’ estimates.

Currently, the Institute’s engineers are carrying out design and survey work, and then Yakovlev specialists will complete the final assembly of the wing mechanisation and install the attachments. As a result of the tests, the strength of the wing structural elements will be confirmed to ensure in-service life and new data will be obtained for further calculations.

“Such studies will provide an understanding of the behaviour of the aircraft wing structure during its entire life cycle,” commented Mikhail Zichenkov, Deputy Director General – Head of the Centre for Aircraft Strength at TsAGI.

TsAGI specialists are involved in various scientific areas of the aircraft development, including strength and resource tests, aerodynamics, flight dynamics and aeroacoustics, and a cycle of research aimed at improving the aircraft’s flight and performance characteristics. A number of issues related to the SJ-100 integrated control system were also solved. Among other tasks performed at TsAGI under the project are the determination of aeroacoustic loads and methods of vibration limitation for mechanisation elements and fuselage sections, as well as studies of the air signal system.

The institute conducted a large amount of research in the field of airliner strength. Calculations and experiments were carried out to ensure the life of the tail section, stabiliser and engine-to-wing attachment units. A dynamically similar model was tested to analyse the dynamic loading of the aircraft structure at take-off and landing modes.

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