22nd Congress of International Council of the Aeronautical Sciences, Harrogate, UK, 28 August - 1st September, 2000
Paper ICAS 2000-4.4.1

PROBLEMS OF ENSURING STRUCTURAL LIFE OF THE SECOND GENERATION SUPERSONIC TRANSPORT

K. S. Shcherban, A. D. Dementyev, S. I. Olkin, T. S. Rodchenko, Y. P. Trunin
TsAGI, Russia

Keywords: second generation supersonic transport, structure, structural service life, pressurised fuselage structure, creep, fatigue, crack resistances, longitudinal joint, effective concentration factor, mach number, curcumferencial stresses, welded structure, composite material structures.

On the basis of summarizing the experience of developing supersonic aircraft some aircraft structural locations are found out whose shape is identified by the lifetime concepts. The lifetime properties of SST-2 lower wing panels have been analyzed when the titanium alloy welded wing box was used. The relation has been generated for the advanced Al-alloy structure between the lifetime and the cruise Mach number. Potential application of composite materials in tip of wing has been analysed.

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