FIELD: engines and pumps.
SUBSTANCE: invention relates to hub of propeller with variable-pitch blades, particularly, to that for gas turbine engine with blower not covered by cowl. This hub comprises polygonal ring with, in fact, radial cylindrical seats distributed around the ring central axis and designed to accommodate said blades, gas turbine engine rotor element and fastener secured at said ring for its connection with said rotor element. Additionally, it comprises multiple safety hooks that fit with clearance in bores. Note here that retaining safety hooks are connected with either ring or rotor element while holes are engaged with other elements of said both.
EFFECT: ruled out hub rupture.
10 cl, 8 dwg
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