FIELD: light fillers made of corrugated material; manufacture of flying vehicles and other industries. SUBSTANCE: panel has skins 1 with zigzag filler 2 between them; filler 2 has alternating projections 3 and recesses 4. Triangular grooves 5 are provided at top pf each projection 3 and in recess 4 which are filled with composite material 6 possessing adhesive properties. EFFECT: enhanced strength and reliability of panel due to increased area of contact between skins and filler. 3 dwg
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