FIELD: flying vehicles, type helicopter. SUBSTANCE: boss has upper plate and lower plate 4 which are interconnected by means of external fittings 14 and spherical laminated stops 8 in such manner that plates are located at definite distance relative to each other forming free space between them where spherical stops 8 are positioned. Located in peripheral portion of these plates are external fittings 14 through which fastenings 5 interconnecting these plates and spherical stops pass. EFFECT: simplified construction and reduced mass. 14 cl, 4 dwg
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