FIELD: transport.
SUBSTANCE: invention relates to stringer, method of developing stringer model with the help of computer, aerospace device and aircraft. Said stringer comprises base with first surface and second surface located opposite the first one, and rib with third and fourth surfaces. Stringer has L-like cross-section over its length and geometry varying along the part of its length with distance increasing along its length. Geometry variation represents a shift of said first surface toward second surface and fourth and third surfaces. Cross-section features, in fact, constant distance measured over cross-section surface between the points whereat cross-section intersects with first and second lines for all cross-sections along the part of its length. Proposed method of developing stringer model with the help of computer comprises preparing first data whereat stringer model base geometry is defined and distance from the base to imaginary plane varying along stringer length. Besides it comprises generation of second data whereat stringer model rib is defined including generation of local changes in rib geometry. Said first and second data are used for generation of stringer model. Method of making said elongated comprises making mould, placing composite material layers therein, and curing said layers.
EFFECT: decreased strains in spar.
25 cl, 24 dwg
