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Information × Registration Number 0221U104885, 0118U004040 , R & D reports Title Theoretical and experimental study of aeroelastic characteristics, stability and supercritical behavior, strength and fatigue life of aviation structures popup.stage_title Head Fomychov Petro O., Registration Date 25-04-2021 Organization National Aerospace University "Kharkiv Aviation Institute" popup.description2  The technical report includes three sections, which were performed by teachers of the Department of Aircraft Strength in the period 2018-2019. The first section includes work on the study of the residual strength of the frame elements of the parachute landing D-5 series 2, spare C-5, rescue C-5K series 2 after prolonged operation or storage in storage conditions. The work was initiated by the Armed Forces of Ukraine. In the second section, some stiffness properties of thin-walled aviation profiles are investigated, calculations of the influence of cross-sectional parameters on the coordinates of the stiffness center are performed. A simplified technology for determining the center of rigidity of the cross section of a thin-walled rod in the early stages of design is proposed. The question of the choice of the rational form of the pressed tuber, the choice of position of a power floor of a fuselage of the plane is considered. The third section is devoted to determining the stability and supercritical behavior of smooth and eccentrically reinforced plates at a purely inhomogeneous initial state. The solution of the stability problem is based on O'Brien's approach, which involves the mandatory determination of the initial stress-strain state, which is then investigated for stability. Product Description popup.authors Grebennikov Michael M Dibir Olexander H Demenko Vladuslav F Kurpikin Anatoliy O Myntiuk Vitali B Muronov Kurulo V Pekelnuy Mukola I Tkachenko Denys A Fomichev Petro O popup.nrat_date 2021-04-25 Close